1
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Mabry ME, Abrahams RS, Al-Shehbaz IA, Baker WJ, Barak S, Barker MS, Barrett RL, Beric A, Bhattacharya S, Carey SB, Conant GC, Conran JG, Dassanayake M, Edger PP, Hall JC, Hao Y, Hendriks KP, Hibberd JM, King GJ, Kliebenstein DJ, Koch MA, Leitch IJ, Lens F, Lysak MA, McAlvay AC, McKibben MTW, Mercati F, Moore RC, Mummenhoff K, Murphy DJ, Nikolov LA, Pisias M, Roalson EH, Schranz ME, Thomas SK, Yu Q, Yocca A, Pires JC, Harkess AE. Complementing model species with model clades. Plant Cell 2024; 36:1205-1226. [PMID: 37824826 PMCID: PMC11062466 DOI: 10.1093/plcell/koad260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 09/07/2023] [Accepted: 09/22/2023] [Indexed: 10/14/2023]
Abstract
Model species continue to underpin groundbreaking plant science research. At the same time, the phylogenetic resolution of the land plant tree of life continues to improve. The intersection of these 2 research paths creates a unique opportunity to further extend the usefulness of model species across larger taxonomic groups. Here we promote the utility of the Arabidopsis thaliana model species, especially the ability to connect its genetic and functional resources, to species across the entire Brassicales order. We focus on the utility of using genomics and phylogenomics to bridge the evolution and diversification of several traits across the Brassicales to the resources in Arabidopsis, thereby extending scope from a model species by establishing a "model clade." These Brassicales-wide traits are discussed in the context of both the model species Arabidopsis and the family Brassicaceae. We promote the utility of such a "model clade" and make suggestions for building global networks to support future studies in the model order Brassicales.
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Affiliation(s)
- Makenzie E Mabry
- Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA
| | - R Shawn Abrahams
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520, USA
- Department of Biochemistry, Purdue University, West Lafayette, IN 47906, USA
| | | | | | - Simon Barak
- Ben-Gurion University of the Negev, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Midreshet Ben-Gurion, 8499000, Israel
| | - Michael S Barker
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
| | - Russell L Barrett
- National Herbarium of New South Wales, Australian Botanic Garden, Locked Bag 6002, Mount Annan, NSW 2567, Australia
| | - Aleksandra Beric
- Department of Psychiatry, Washington University in Saint Louis School of Medicine, St. Louis, MO 63110, USA
- NeuroGenomics and Informatics Center, Washington University in Saint Louis School of Medicine, St. Louis, MO 63108, USA
| | - Samik Bhattacharya
- Department of Biology, Botany, University of Osnabrück, D-49076 Osnabrück, Germany
| | - Sarah B Carey
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Gavin C Conant
- Department of Biological Sciences, Bioinformatics Research Center, Program in Genetics, North Carolina State University, Raleigh, NC 27695, USA
| | - John G Conran
- ACEBB and SGC, School of Biological Sciences, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Maheshi Dassanayake
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48864, USA
| | - Jocelyn C Hall
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
| | - Yue Hao
- Cancer and Cell Biology Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA
| | - Kasper P Hendriks
- Department of Biology, Botany, University of Osnabrück, D-49076 Osnabrück, Germany
- Functional Traits, Naturalis Biodiversity Center, PO Box 9517, Leiden 2300 RA, the Netherlands
| | - Julian M Hibberd
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 1TN, UK
| | - Graham J King
- Southern Cross Plant Science, Southern Cross University, Lismore, NSW 2480, Australia
| | | | - Marcus A Koch
- Centre for Organismal Studies (COS), Heidelberg University, 69120 Heidelberg, Germany
| | - Ilia J Leitch
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK
| | - Frederic Lens
- Functional Traits, Naturalis Biodiversity Center, PO Box 9517, Leiden 2300 RA, the Netherlands
- Institute of Biology Leiden, Plant Sciences, Leiden University, 2333 BE Leiden, the Netherlands
| | - Martin A Lysak
- CEITEC, and NCBR, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Alex C McAlvay
- Institute of Economic Botany, New York Botanical Garden, The Bronx, NY 10458, USA
| | - Michael T W McKibben
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
| | - Francesco Mercati
- National Research Council (CNR), Institute of Biosciences and Bioresource (IBBR), Palermo 90129, Italy
| | | | - Klaus Mummenhoff
- Department of Biology, Botany, University of Osnabrück, D-49076 Osnabrück, Germany
| | - Daniel J Murphy
- Royal Botanic Gardens Victoria, Melbourne, VIC 3004, Australia
| | | | - Michael Pisias
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Eric H Roalson
- School of Biological Sciences, Washington State University, Pullman, WA 99164-4236, USA
| | - M Eric Schranz
- Biosystematics Group, Wageningen University, 6708 PB Wageningen, the Netherlands
| | - Shawn K Thomas
- Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA
- Bioinformatics and Analytics Core, University of Missouri, Columbia, MO 65211, USA
| | - Qingyi Yu
- Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Hilo, HI 96720, USA
| | - Alan Yocca
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - J Chris Pires
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523-1170, USA
| | - Alex E Harkess
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
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2
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Fang C, Jiang N, Teresi SJ, Platts AE, Agarwal G, Niederhuth C, Edger PP, Jiang J. Dynamics of accessible chromatin regions and subgenome dominance in octoploid strawberry. Nat Commun 2024; 15:2491. [PMID: 38509076 PMCID: PMC10954716 DOI: 10.1038/s41467-024-46861-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 03/12/2024] [Indexed: 03/22/2024] Open
Abstract
Subgenome dominance has been reported in diverse allopolyploid species, where genes from one subgenome are preferentially retained and are more highly expressed than those from other subgenome(s). However, the molecular mechanisms responsible for subgenome dominance remain poorly understood. Here, we develop genome-wide map of accessible chromatin regions (ACRs) in cultivated strawberry (2n = 8x = 56, with A, B, C, D subgenomes). Each ACR is identified as an MNase hypersensitive site (MHS). We discover that the dominant subgenome A contains a greater number of total MHSs and MHS per gene than the submissive B/C/D subgenomes. Subgenome A suffers fewer losses of MHS-related DNA sequences and fewer MHS fragmentations caused by insertions of transposable elements. We also discover that genes and MHSs related to stress response have been preferentially retained in subgenome A. We conclude that preservation of genes and their cognate ACRs, especially those related to stress responses, play a major role in the establishment of subgenome dominance in octoploid strawberry.
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Affiliation(s)
- Chao Fang
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Ning Jiang
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Michigan State University AgBioResearch, East Lansing, MI, 48824, USA
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI, 48824, USA
| | - Scott J Teresi
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI, 48824, USA
| | - Adrian E Platts
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | - Gaurav Agarwal
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Chad Niederhuth
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
- Michigan State University AgBioResearch, East Lansing, MI, 48824, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA.
- Michigan State University AgBioResearch, East Lansing, MI, 48824, USA.
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI, 48824, USA.
| | - Jiming Jiang
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA.
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA.
- Michigan State University AgBioResearch, East Lansing, MI, 48824, USA.
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3
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Zhao K, Dong J, Xu J, Bai Y, Yin Y, Long C, Wu L, Lin T, Fan L, Wang Y, Edger PP, Xiong Z. Downregulation of the expression of subgenomic chromosome A7 genes promotes plant height in resynthesized allopolyploid Brassica napus. Theor Appl Genet 2023; 137:11. [PMID: 38110525 DOI: 10.1007/s00122-023-04510-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 11/18/2023] [Indexed: 12/20/2023]
Abstract
KEY MESSAGE Homoeolog expression bias and the gene dosage effect induce downregulation of genes on chromosome A7, causing a significant increase in the plant height of resynthesized allopolyploid Brassica napus. Gene expression levels in allopolyploid plants are not equivalent to the simple average of the expression levels in the parents and are associated with several non-additive expression phenomena, including homoeolog expression bias. However, hardly any information is available on the effect of homoeolog expression bias on traits. Here, we studied the effects of gene expression-related characteristics on agronomic traits using six isogenic resynthesized Brassica napus lines across the first ten generations. We found a group of genes located on chromosome A7 whose expression levels were significantly negatively correlated with plant height. They were expressed at significantly lower levels than their homoeologous genes, owing to allopolyploidy rather than inheritance from parents. Homoeolog expression bias resulted in resynthesized allopolyploids with a plant height similar to their female Brassica oleracea parent, but significantly higher than that of the male Brassica rapa parent. Notably, aneuploid lines carrying monosomic and trisomic chromosome A7 had the highest and lowest plant heights, respectively, due to changes in the expression bias of homoeologous genes because of alterations in the gene dosage. These findings suggest that the downregulation of the expression of homoeologous genes on a single chromosome can result in the partial improvement of traits to a significant extent in the nascent allopolyploid B. napus.
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Affiliation(s)
- Kanglu Zhao
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010070, China
| | - Jing Dong
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010070, China
| | - Junxiong Xu
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010070, China
| | - Yanbo Bai
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010070, China
| | - Yuhe Yin
- Institute of Ulanqab Agricultural and Forestry Sciences, Ulanqab, 012000, Inner Mongolia, China
| | - Chunshen Long
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010070, China
| | - Lei Wu
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010070, China
| | - Tuanrong Lin
- Institute of Ulanqab Agricultural and Forestry Sciences, Ulanqab, 012000, Inner Mongolia, China
| | - Longqiu Fan
- Institute of Ulanqab Agricultural and Forestry Sciences, Ulanqab, 012000, Inner Mongolia, China
| | - Yufeng Wang
- Institute of Ulanqab Agricultural and Forestry Sciences, Ulanqab, 012000, Inner Mongolia, China
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA.
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI, 48824, USA.
| | - Zhiyong Xiong
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010070, China.
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4
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Xu MRX, Liao ZY, Brock JR, Du K, Li GY, Chen ZQ, Wang YH, Gao ZN, Agarwal G, Wei KHC, Shao F, Pang S, Platts AE, van de Velde J, Lin HM, Teresi SJ, Bird K, Niederhuth CE, Xu JG, Yu GH, Yang JY, Dai SF, Nelson A, Braasch I, Zhang XG, Schartl M, Edger PP, Han MJ, Zhang HH. Maternal dominance contributes to subgenome differentiation in allopolyploid fishes. Nat Commun 2023; 14:8357. [PMID: 38102128 PMCID: PMC10724154 DOI: 10.1038/s41467-023-43740-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 11/17/2023] [Indexed: 12/17/2023] Open
Abstract
Teleost fishes, which are the largest and most diverse group of living vertebrates, have a rich history of ancient and recent polyploidy. Previous studies of allotetraploid common carp and goldfish (cyprinids) reported a dominant subgenome, which is more expressed and exhibits biased gene retention. However, the underlying mechanisms contributing to observed 'subgenome dominance' remains poorly understood. Here we report high-quality genomes of twenty-one cyprinids to investigate the origin and subsequent subgenome evolution patterns following three independent allopolyploidy events. We identify the closest extant relatives of the diploid progenitor species, investigate genetic and epigenetic differences among subgenomes, and conclude that observed subgenome dominance patterns are likely due to a combination of maternal dominance and transposable element densities in each polyploid. These findings provide an important foundation to understanding subgenome dominance patterns observed in teleost fishes, and ultimately the role of polyploidy in contributing to evolutionary innovations.
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Affiliation(s)
- Min-Rui-Xuan Xu
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Zhen-Yang Liao
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Jordan R Brock
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Kang Du
- The Xiphophorus Genetic Stock Center, Texas State University, San Marcos, TX, USA
| | - Guo-Yin Li
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, Henan, China
| | | | - Ying-Hao Wang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Zhong-Nan Gao
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Gaurav Agarwal
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
| | - Kevin H-C Wei
- Department of Integrative Biology, University of California Berkeley, Berkeley, CA, USA
- Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Feng Shao
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Southwest University, School of Life Sciences, Chongqing, China
| | | | - Adrian E Platts
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Jozefien van de Velde
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Hong-Min Lin
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Scott J Teresi
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Kevin Bird
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Chad E Niederhuth
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
| | - Jin-Gen Xu
- Jiujiang Academy of Agricultural Sciences, Jiujiang, China
| | - Guo-Hua Yu
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Jian-Yuan Yang
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Si-Fa Dai
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | | | - Ingo Braasch
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
| | - Xiao-Gu Zhang
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China.
| | - Manfred Schartl
- The Xiphophorus Genetic Stock Center, Texas State University, San Marcos, TX, USA.
- Developmental Biochemistry, Biocenter, University of Würzburg, Würzburg, Bayern, Germany.
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.
| | - Min-Jin Han
- State Key Laboratory of Resource Insects, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, China.
| | - Hua-Hao Zhang
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China.
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5
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Yocca AE, Platts A, Alger E, Teresi S, Mengist MF, Benevenuto J, Ferrão LFV, Jacobs M, Babinski M, Magallanes-Lundback M, Bayer P, Golicz A, Humann JL, Main D, Espley RV, Chagné D, Albert NW, Montanari S, Vorsa N, Polashock J, Díaz-Garcia L, Zalapa J, Bassil NV, Munoz PR, Iorizzo M, Edger PP. Blueberry and cranberry pangenomes as a resource for future genetic studies and breeding efforts. Hortic Res 2023; 10:uhad202. [PMID: 38023484 PMCID: PMC10673653 DOI: 10.1093/hr/uhad202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/01/2023] [Indexed: 12/01/2023]
Abstract
Domestication of cranberry and blueberry began in the United States in the early 1800s and 1900s, respectively, and in part owing to their flavors and health-promoting benefits are now cultivated and consumed worldwide. The industry continues to face a wide variety of production challenges (e.g. disease pressures), as well as a demand for higher-yielding cultivars with improved fruit quality characteristics. Unfortunately, molecular tools to help guide breeding efforts for these species have been relatively limited compared with those for other high-value crops. Here, we describe the construction and analysis of the first pangenome for both blueberry and cranberry. Our analysis of these pangenomes revealed both crops exhibit great genetic diversity, including the presence-absence variation of 48.4% genes in highbush blueberry and 47.0% genes in cranberry. Auxiliary genes, those not shared by all cultivars, are significantly enriched with molecular functions associated with disease resistance and the biosynthesis of specialized metabolites, including compounds previously associated with improving fruit quality traits. The discovery of thousands of genes, not present in the previous reference genomes for blueberry and cranberry, will serve as the basis of future research and as potential targets for future breeding efforts. The pangenome, as a multiple-sequence alignment, as well as individual annotated genomes, are publicly available for analysis on the Genome Database for Vaccinium-a curated and integrated web-based relational database. Lastly, the core-gene predictions from the pangenomes will serve useful to develop a community genotyping platform to guide future molecular breeding efforts across the family.
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Affiliation(s)
- Alan E Yocca
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, United States
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, United States
| | - Adrian Platts
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, United States
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, United States
| | - Elizabeth Alger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, United States
| | - Scott Teresi
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, United States
- Genetics and Genome Sciences, Michigan State University, East Lansing, MI, 48824, United States
| | - Molla F Mengist
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC United States
| | - Juliana Benevenuto
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, United States
| | - Luis Felipe V Ferrão
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, United States
| | - MacKenzie Jacobs
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, United States
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, United States
| | - Michal Babinski
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, United States
| | | | - Philipp Bayer
- University of Western Australia, Perth 6009Australia
| | | | - Jodi L Humann
- Department of Horticulture, Washington State University, Pullman, WA, 99163, United States
| | - Dorrie Main
- Department of Horticulture, Washington State University, Pullman, WA, 99163, United States
| | - Richard V Espley
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand
| | - David Chagné
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston, New Zealand
| | - Nick W Albert
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston, New Zealand
| | - Sara Montanari
- The New Zealand Institute for Plant and Food Research Limited (PFR), Motueka, New Zealand
| | - Nicholi Vorsa
- SEBS, Plant Biology, Rutgers University, New Brunswick NJ 01019United States
| | - James Polashock
- SEBS, Plant Biology, Rutgers University, New Brunswick NJ 01019United States
| | - Luis Díaz-Garcia
- Department of Viticulture and Enology, University of California, Davis, Davis, CA 95616, United States
| | - Juan Zalapa
- Department of Viticulture and Enology, University of California, Davis, Davis, CA 95616, United States
| | - Nahla V Bassil
- National Clonal Germplasm Repository, USDA-ARS, Corvallis, OR 97333, United States
| | - Patricio R Munoz
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, United States
| | - Massimo Iorizzo
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NCUnited States
- Department of Horticulture, North Carolina State University, Kannapolis, NCUnited States
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, United States
- Genetics and Genome Sciences, Michigan State University, East Lansing, MI, 48824, United States
- MSU AgBioResearch, Michigan State University, East Lansing, MI, 48824, United States
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6
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Jacobs M, Thompson S, Platts AE, Body MJA, Kelsey A, Saad A, Abeli P, Teresi SJ, Schilmiller A, Beaudry R, Feldmann MJ, Knapp SJ, Song GQ, Miles T, Edger PP. Uncovering genetic and metabolite markers associated with resistance against anthracnose fruit rot in northern highbush blueberry. Hortic Res 2023; 10:uhad169. [PMID: 38025975 PMCID: PMC10660357 DOI: 10.1093/hr/uhad169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 08/29/2023] [Indexed: 12/01/2023]
Abstract
Anthracnose fruit rot (AFR), caused by the fungal pathogen Colletotrichum fioriniae, is among the most destructive and widespread fruit disease of blueberry, impacting both yield and overall fruit quality. Blueberry cultivars have highly variable resistance against AFR. To date, this pathogen is largely controlled by applying various fungicides; thus, a more cost-effective and environmentally conscious solution for AFR is needed. Here we report three quantitative trait loci associated with AFR resistance in northern highbush blueberry (Vaccinium corymbosum). Candidate genes within these genomic regions are associated with the biosynthesis of flavonoids (e.g. anthocyanins) and resistance against pathogens. Furthermore, we examined gene expression changes in fruits following inoculation with Colletotrichum in a resistant cultivar, which revealed an enrichment of significantly differentially expressed genes associated with certain specialized metabolic pathways (e.g. flavonol biosynthesis) and pathogen resistance. Using non-targeted metabolite profiling, we identified a flavonol glycoside with properties consistent with a quercetin rhamnoside as a compound exhibiting significant abundance differences among the most resistant and susceptible individuals from the genetic mapping population. Further analysis revealed that this compound exhibits significant abundance differences among the most resistant and susceptible individuals when analyzed as two groups. However, individuals within each group displayed considerable overlapping variation in this compound, suggesting that its abundance may only be partially associated with resistance against C. fioriniae. These findings should serve as a powerful resource that will enable breeding programs to more easily develop new cultivars with superior resistance to AFR and as the basis of future research studies.
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Affiliation(s)
- MacKenzie Jacobs
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Molecular Plant Science Program, Michigan State University, East Lansing, MI 48824, USA
| | - Samantha Thompson
- Molecular Plant Science Program, Michigan State University, East Lansing, MI 48824, USA
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - Adrian E Platts
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Melanie J A Body
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Alexys Kelsey
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Amanda Saad
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Patrick Abeli
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Department of Horticulture and Natural Resources, Kansas State University, Olathe, KS 66061, USA
| | - Scott J Teresi
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI 48824, USA
| | - Anthony Schilmiller
- Mass Spectrometry & Metabolomics Core, Michigan State University, East Lansing, MI 48824, USA
| | - Randolph Beaudry
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Mitchell J Feldmann
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - Steven J Knapp
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - Guo-qing Song
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Timothy Miles
- Molecular Plant Science Program, Michigan State University, East Lansing, MI 48824, USA
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI 48824, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Molecular Plant Science Program, Michigan State University, East Lansing, MI 48824, USA
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI 48824, USA
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7
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Bird KA, Pires JC, VanBuren R, Xiong Z, Edger PP. Dosage-sensitivity shapes how genes transcriptionally respond to allopolyploidy and homoeologous exchange in resynthesized Brassica napus. Genetics 2023; 225:iyad114. [PMID: 37338008 PMCID: PMC10471226 DOI: 10.1093/genetics/iyad114] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 03/10/2023] [Accepted: 06/12/2023] [Indexed: 06/21/2023] Open
Abstract
The gene balance hypothesis proposes that selection acts on the dosage (i.e. copy number) of genes within dosage-sensitive portions of networks, pathways, and protein complexes to maintain balanced stoichiometry of interacting proteins, because perturbations to stoichiometric balance can result in reduced fitness. This selection has been called dosage balance selection. Dosage balance selection is also hypothesized to constrain expression responses to dosage changes, making dosage-sensitive genes (those encoding members of interacting proteins) experience more similar expression changes. In allopolyploids, where whole-genome duplication involves hybridization of diverged lineages, organisms often experience homoeologous exchanges that recombine, duplicate, and delete homoeologous regions of the genome and alter the expression of homoeologous gene pairs. Although the gene balance hypothesis makes predictions about the expression response to homoeologous exchanges, they have not been empirically tested. We used genomic and transcriptomic data from 6 resynthesized, isogenic Brassica napus lines over 10 generations to identify homoeologous exchanges, analyzed expression responses, and tested for patterns of genomic imbalance. Groups of dosage-sensitive genes had less variable expression responses to homoeologous exchanges than dosage-insensitive genes, a sign that their relative dosage is constrained. This difference was absent for homoeologous pairs whose expression was biased toward the B. napus A subgenome. Finally, the expression response to homoeologous exchanges was more variable than the response to whole-genome duplication, suggesting homoeologous exchanges create genomic imbalance. These findings expand our knowledge of the impact of dosage balance selection on genome evolution and potentially connect patterns in polyploid genomes over time, from homoeolog expression bias to duplicate gene retention.
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Affiliation(s)
- Kevin A Bird
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Ecology, Evolution, and Behavior Program, Michigan State University, East Lansing, MI 48824, USA
| | - J Chris Pires
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA
| | - Zhiyong Xiong
- Key Laboratory of Herbage and Endemic Crop Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Ecology, Evolution, and Behavior Program, Michigan State University, East Lansing, MI 48824, USA
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8
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Yocca AE, Platts A, Alger E, Teresi S, Mengist MF, Benevenuto J, Ferrão LFV, Jacobs M, Babinski M, Magallanes-Lundback M, Bayer P, Golicz A, Humann JL, Main D, Espley RV, Chagné D, Albert NW, Montanari S, Vorsa N, Polashock J, Díaz-Garcia L, Zalapa J, Bassil NV, Munoz PR, Iorizzo M, Edger PP. Blueberry and cranberry pangenomes as a resource for future genetic studies and breeding efforts. bioRxiv 2023:2023.07.31.551392. [PMID: 37577683 PMCID: PMC10418200 DOI: 10.1101/2023.07.31.551392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Domestication of cranberry and blueberry began in the United States in the early 1800s and 1900s, respectively, and in part owing to their flavors and health-promoting benefits are now cultivated and consumed worldwide. The industry continues to face a wide variety of production challenges (e.g. disease pressures) as well as a demand for higher-yielding cultivars with improved fruit quality characteristics. Unfortunately, molecular tools to help guide breeding efforts for these species have been relatively limited compared with those for other high-value crops. Here, we describe the construction and analysis of the first pangenome for both blueberry and cranberry. Our analysis of these pangenomes revealed both crops exhibit great genetic diversity, including the presence-absence variation of 48.4% genes in highbush blueberry and 47.0% genes in cranberry. Auxiliary genes, those not shared by all cultivars, are significantly enriched with molecular functions associated with disease resistance and the biosynthesis of specialized metabolites, including compounds previously associated with improving fruit quality traits. The discovery of thousands of genes, not present in the previous reference genomes for blueberry and cranberry, will serve as the basis of future research and as potential targets for future breeding efforts. The pangenome, as a multiple-sequence alignment, as well as individual annotated genomes, are publicly available for analysis on the Genome Database for Vaccinium - a curated and integrated web-based relational database. Lastly, the core-gene predictions from the pangenomes will serve useful to develop a community genotyping platform to guide future molecular breeding efforts across the family.
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Affiliation(s)
- Alan E. Yocca
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Adrian Platts
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Elizabeth Alger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | - Scott Teresi
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Genetics and Genome Sciences, Michigan State University, East Lansing, MI, 48824, USA
| | - Molla F. Mengist
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC USA
| | - Juliana Benevenuto
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - Luis Felipe V. Ferrão
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - MacKenzie Jacobs
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Michal Babinski
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | | | - Philipp Bayer
- University of Western Australia, Perth 6009 Australia
| | | | - Jodi L Humann
- Department of Horticulture, Washington State University, Pullman, WA, 99163, USA
| | - Dorrie Main
- Department of Horticulture, Washington State University, Pullman, WA, 99163, USA
| | - Richard V. Espley
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand
| | - David Chagné
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston, New Zealand
| | - Nick W. Albert
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston, New Zealand
| | - Sara Montanari
- The New Zealand Institute for Plant and Food Research Limited (PFR), Motueka, New Zealand
| | - Nicholi Vorsa
- SEBS, Plant Biology, Rutgers University, New Brunswick NJ 01019 USA
| | - James Polashock
- SEBS, Plant Biology, Rutgers University, New Brunswick NJ 01019 USA
| | - Luis Díaz-Garcia
- USDA-ARS, VCRU, Department of Horticulture, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Juan Zalapa
- USDA-ARS, VCRU, Department of Horticulture, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Nahla V. Bassil
- USDA-ARS, National Clonal Germplasm Repository, Corvallis, OR 97333, USA
| | - Patricio R. Munoz
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - Massimo Iorizzo
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC USA
- Department of Horticulture, North Carolina State University, Kannapolis, NC USA
| | - Patrick P. Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Genetics and Genome Sciences, Michigan State University, East Lansing, MI, 48824, USA
- MSU AgBioResearch, Michigan State University, East Lansing, MI, 48824, USA
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9
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Deb SK, Edger PP, Pires JC, McKain MR. Patterns, mechanisms, and consequences of homoeologous exchange in allopolyploid angiosperms: a genomic and epigenomic perspective. New Phytol 2023; 238:2284-2304. [PMID: 37010081 DOI: 10.1111/nph.18927] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 03/16/2023] [Indexed: 05/19/2023]
Abstract
Allopolyploids result from hybridization between different evolutionary lineages coupled with genome doubling. Homoeologous chromosomes (chromosomes with common shared ancestry) may undergo recombination immediately after allopolyploid formation and continue over successive generations. The outcome of this meiotic pairing behavior is dynamic and complex. Homoeologous exchanges (HEs) may lead to the formation of unbalanced gametes, reduced fertility, and selective disadvantage. By contrast, HEs could act as sources of novel evolutionary substrates, shifting the relative dosage of parental gene copies, generating novel phenotypic diversity, and helping the establishment of neo-allopolyploids. However, HE patterns vary among lineages, across generations, and even within individual genomes and chromosomes. The causes and consequences of this variation are not fully understood, though interest in this evolutionary phenomenon has increased in the last decade. Recent technological advances show promise in uncovering the mechanistic basis of HEs. Here, we describe recent observations of the common patterns among allopolyploid angiosperm lineages, underlying genomic and epigenomic features, and consequences of HEs. We identify critical research gaps and discuss future directions with far-reaching implications in understanding allopolyploid evolution and applying them to the development of important phenotypic traits of polyploid crops.
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Affiliation(s)
- Sontosh K Deb
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL, 35487, USA
- Department of Forestry and Environmental Science, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48823, USA
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI, 48823, USA
| | - J Chris Pires
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, 80523, USA
| | - Michael R McKain
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL, 35487, USA
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10
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Albert NW, Iorizzo M, Mengist MF, Montanari S, Zalapa J, Maule A, Edger PP, Yocca AE, Platts AE, Pucker B, Espley RV. Vaccinium as a comparative system for understanding of complex flavonoid accumulation profiles and regulation in fruit. Plant Physiol 2023:7147756. [PMID: 37129240 DOI: 10.1093/plphys/kiad250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023]
Abstract
The genus Vaccinium L. (Ericaceae) contains premium berryfruit crops including blueberry, cranberry, bilberry and lingonberry. Consumption of Vaccinium berries is strongly associated with various potential health and many of these benefits are attributed to the relatively high concentrations of flavonoids, including the anthocyanins that provide the attractive red and blue berry colours. Since these phytochemicals are increasingly appealing to consumers, they have become a crop breeding target. There has been substantial recent progress in Vaccinium genomics and genetics together with new functional data on the transcriptional regulation of flavonoids. This is helping to unravel the developmental control of flavonoids and to identify genetic regions and genes that can be selected for, to further improve Vaccinium crops, and advance our understanding of flavonoid regulation and biosynthesis across a broader range of fruit crops. In this update we consider the recent progress in understanding flavonoid regulation in fruit crops, using Vaccinium as an example, and highlighting the significant gains in both genomic tools and functional analysis.
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Affiliation(s)
- Nick W Albert
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston North, New Zealand
| | - Massimo Iorizzo
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NCUSA
- Department of Horticultural Science, North Carolina State University, Raleigh, NCUSA
| | - Molla F Mengist
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NCUSA
- Department of Horticultural Science, North Carolina State University, Raleigh, NCUSA
| | | | - Juan Zalapa
- USDA-ARS, Vegetable Crops Research Unit, Department of Horticulture, University of Wisconsin-Madison, WI, 53706, USA
| | - Andrew Maule
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NCUSA
- Department of Horticultural Science, North Carolina State University, Raleigh, NCUSA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- MSU AgBioResearch, Michigan State University, East Lansing, MI, 48824, USA
| | - Alan E Yocca
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- HudsonAlpha Institute for Biotechnology, 601 Genome Way, AL, 35806, USA
| | - Adrian E Platts
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- HudsonAlpha Institute for Biotechnology, 601 Genome Way, AL, 35806, USA
| | - Boas Pucker
- Institute of Plant Biology & BRICS, TU Braunschweig, Braunschweig, Germany
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11
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Cao Y, Zhao K, Xu J, Wu L, Hao F, Sun M, Dong J, Chao G, Zhang H, Gong X, Chen Y, Chen C, Qian W, Pires JC, Edger PP, Xiong Z. Genome balance and dosage effect drive allopolyploid formation in Brassica. Proc Natl Acad Sci U S A 2023; 120:e2217672120. [PMID: 36989303 PMCID: PMC10083598 DOI: 10.1073/pnas.2217672120] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Polyploidy is a major evolutionary force that has shaped plant diversity. However, the various pathways toward polyploid formation and interploidy gene flow remain poorly understood. Here, we demonstrated that the immediate progeny of allotriploid AAC Brassica (obtained by crossing allotetraploid Brassica napus and diploid Brassica rapa) was predominantly aneuploids with ploidal levels ranging from near-triploidy to near-hexaploidy, and their chromosome numbers deviated from the theoretical distribution toward increasing chromosome numbers, suggesting that they underwent selection. Karyotype and phenotype analyses showed that aneuploid individuals containing fewer imbalanced chromosomes had higher viability and fertility. Within three generations of self-fertilization, allotriploids mainly developed into near or complete allotetraploids similar to B. napus via gradually increasing chromosome numbers and fertility, suggesting that allotriploids could act as a bridge in polyploid formation, with aneuploids as intermediates. Self-fertilized interploidy hybrids ultimately generated new allopolyploids carrying different chromosome combinations, which may create a reproductive barrier preventing allotetraploidy back to diploidy and promote gene flow from diploids to allotetraploids. These results suggest that the maintenance of a proper genome balance and dosage drove the recurrent conversion of allotriploids to allotetraploids, which may contribute to the formation and evolution of polyploids.
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Affiliation(s)
- Yao Cao
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Kanglu Zhao
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Junxiong Xu
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Lei Wu
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Fangyuan Hao
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Meiping Sun
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Jing Dong
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Getu Chao
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Hong Zhang
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Xiufeng Gong
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
| | - Yangui Chen
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China
| | - Chunli Chen
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Science, Guizhou University, Guiyang 550025, China
| | - Wei Qian
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China
| | - J Chris Pires
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48823
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI 48824
| | - Zhiyong Xiong
- Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
- College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China
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12
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Mengist MF, Bostan H, De Paola D, Teresi SJ, Platts AE, Cremona G, Qi X, Mackey T, Bassil NV, Ashrafi H, Giongo L, Jibran R, Chagné D, Bianco L, Lila MA, Rowland LJ, Iovene M, Edger PP, Iorizzo M. Autopolyploid inheritance and a heterozygous reciprocal translocation shape chromosome genetic behavior in tetraploid blueberry (Vaccinium corymbosum). New Phytol 2023; 237:1024-1039. [PMID: 35962608 PMCID: PMC10087351 DOI: 10.1111/nph.18428] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 08/01/2022] [Indexed: 06/02/2023]
Abstract
Understanding chromosome recombination behavior in polyploidy species is key to advancing genetic discoveries. In blueberry, a tetraploid species, the line of evidences about its genetic behavior still remain poorly understood, owing to the inter-specific, and inter-ploidy admixture of its genome and lack of in depth genome-wide inheritance and comparative structural studies. Here we describe a new high-quality, phased, chromosome-scale genome of a diploid blueberry, clone W85. The genome was integrated with cytogenetics and high-density, genetic maps representing six tetraploid blueberry cultivars, harboring different levels of wild genome admixture, to uncover recombination behavior and structural genome divergence across tetraploid and wild diploid species. Analysis of chromosome inheritance and pairing demonstrated that tetraploid blueberry behaves as an autotetraploid with tetrasomic inheritance. Comparative analysis demonstrated the presence of a reciprocal, heterozygous, translocation spanning one homolog of chr-6 and one of chr-10 in the cultivar Draper. The translocation affects pairing and recombination of chromosomes 6 and 10. Besides the translocation detected in Draper, no other structural genomic divergences were detected across tetraploid cultivars and highly inter-crossable wild diploid species. These findings and resources will facilitate new genetic and comparative genomic studies in Vaccinium and the development of genomic assisted selection strategy for this crop.
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Affiliation(s)
- Molla F. Mengist
- Plants for Human Health InstituteNorth Carolina State UniversityKannapolisNC28081USA
| | - Hamed Bostan
- Plants for Human Health InstituteNorth Carolina State UniversityKannapolisNC28081USA
| | - Domenico De Paola
- Institute of Biosciences and BioresourcesNational Research Council of ItalyBari70126Italy
| | - Scott J. Teresi
- Department of HorticultureMichigan State UniversityEast LansingMI48824USA
| | - Adrian E. Platts
- Department of HorticultureMichigan State UniversityEast LansingMI48824USA
| | - Gaetana Cremona
- Institute of Biosciences and BioresourcesNational Research Council of ItalyPorticiNA80055Italy
| | - Xinpeng Qi
- Genetic Improvement for Fruits and Vegetables LaboratoryBeltsville Agricultural Research Center‐West, US Department of Agriculture, Agricultural Research ServiceBeltsvilleMD20705USA
| | - Ted Mackey
- Horticultural Crops Research UnitUS Department of Agriculture, Agricultural Research ServiceCorvallisOR97330USA
| | - Nahla V. Bassil
- National Clonal Germplasm RepositoryUS Department of Agriculture, Agricultural Research ServiceCorvallisOR97333USA
| | - Hamid Ashrafi
- Department of Horticultural ScienceNorth Carolina State UniversityRaleighNC27695USA
| | - Lara Giongo
- Foundation of Edmund MachSan Michele all'AdigeTN38098Italy
| | - Rubina Jibran
- Plant & Food ResearchFitzherbertPalmerston North4474New Zealand
| | - David Chagné
- Plant & Food ResearchFitzherbertPalmerston North4474New Zealand
| | - Luca Bianco
- Foundation of Edmund MachSan Michele all'AdigeTN38098Italy
| | - Mary A. Lila
- Plants for Human Health InstituteNorth Carolina State UniversityKannapolisNC28081USA
| | - Lisa J. Rowland
- Genetic Improvement for Fruits and Vegetables LaboratoryBeltsville Agricultural Research Center‐West, US Department of Agriculture, Agricultural Research ServiceBeltsvilleMD20705USA
| | - Marina Iovene
- Institute of Biosciences and BioresourcesNational Research Council of ItalyPorticiNA80055Italy
| | - Patrick P. Edger
- Department of HorticultureMichigan State UniversityEast LansingMI48824USA
| | - Massimo Iorizzo
- Plants for Human Health InstituteNorth Carolina State UniversityKannapolisNC28081USA
- Department of Horticultural ScienceNorth Carolina State UniversityRaleighNC27695USA
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13
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Bryson AE, Lanier ER, Lau KH, Hamilton JP, Vaillancourt B, Mathieu D, Yocca AE, Miller GP, Edger PP, Buell CR, Hamberger B. Uncovering a miltiradiene biosynthetic gene cluster in the Lamiaceae reveals a dynamic evolutionary trajectory. Nat Commun 2023; 14:343. [PMID: 36670101 PMCID: PMC9860074 DOI: 10.1038/s41467-023-35845-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 01/04/2023] [Indexed: 01/22/2023] Open
Abstract
The spatial organization of genes within plant genomes can drive evolution of specialized metabolic pathways. Terpenoids are important specialized metabolites in plants with diverse adaptive functions that enable environmental interactions. Here, we report the genome assemblies of Prunella vulgaris, Plectranthus barbatus, and Leonotis leonurus. We investigate the origin and subsequent evolution of a diterpenoid biosynthetic gene cluster (BGC) together with other seven species within the Lamiaceae (mint) family. Based on core genes found in the BGCs of all species examined across the Lamiaceae, we predict a simplified version of this cluster evolved in an early Lamiaceae ancestor. The current composition of the extant BGCs highlights the dynamic nature of its evolution. We elucidate the terpene backbones generated by the Callicarpa americana BGC enzymes, including miltiradiene and the terpene (+)-kaurene, and show oxidization activities of BGC cytochrome P450s. Our work reveals the fluid nature of BGC assembly and the importance of genome structure in contributing to the origin of metabolites.
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Affiliation(s)
- Abigail E Bryson
- Department of Biochemistry, Michigan State University, East Lansing, MI, USA
| | - Emily R Lanier
- Department of Biochemistry, Michigan State University, East Lansing, MI, USA
| | - Kin H Lau
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
- Bioinformatics and Biostatistics Core, Van Andel Institute, Grand Rapids, MI, USA
| | - John P Hamilton
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
- Center for Applied Genetic Technologies, University of Georgia, Athens, GA, USA
| | - Brieanne Vaillancourt
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
- Center for Applied Genetic Technologies, University of Georgia, Athens, GA, USA
| | - Davis Mathieu
- Department of Biochemistry, Michigan State University, East Lansing, MI, USA
| | - Alan E Yocca
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Garret P Miller
- Department of Biochemistry, Michigan State University, East Lansing, MI, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - C Robin Buell
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
| | - Björn Hamberger
- Department of Biochemistry, Michigan State University, East Lansing, MI, USA.
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14
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Yim WC, Swain ML, Ma D, An H, Bird KA, Curdie DD, Wang S, Ham HD, Luzuriaga-Neira A, Kirkwood JS, Hur M, Solomon JKQ, Harper JF, Kosma DK, Alvarez-Ponce D, Cushman JC, Edger PP, Mason AS, Pires JC, Tang H, Zhang X. The final piece of the Triangle of U: Evolution of the tetraploid Brassica carinata genome. Plant Cell 2022; 34:4143-4172. [PMID: 35961044 PMCID: PMC9614464 DOI: 10.1093/plcell/koac249] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 06/24/2022] [Indexed: 05/05/2023]
Abstract
Ethiopian mustard (Brassica carinata) is an ancient crop with remarkable stress resilience and a desirable seed fatty acid profile for biofuel uses. Brassica carinata is one of six Brassica species that share three major genomes from three diploid species (AA, BB, and CC) that spontaneously hybridized in a pairwise manner to form three allotetraploid species (AABB, AACC, and BBCC). Of the genomes of these species, that of B. carinata is the least understood. Here, we report a chromosome scale 1.31-Gbp genome assembly with 156.9-fold sequencing coverage for B. carinata, completing the reference genomes comprising the classic Triangle of U, a classical theory of the evolutionary relationships among these six species. Our assembly provides insights into the hybridization event that led to the current B. carinata genome and the genomic features that gave rise to the superior agronomic traits of B. carinata. Notably, we identified an expansion of transcription factor networks and agronomically important gene families. Completion of the Triangle of U comparative genomics platform has allowed us to examine the dynamics of polyploid evolution and the role of subgenome dominance in the domestication and continuing agronomic improvement of B. carinata and other Brassica species.
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Affiliation(s)
| | | | - Dongna Ma
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Hong An
- Division of Biological Sciences, University of Missouri, Columbia, Missouri 65201, USA
| | - Kevin A Bird
- Department of Horticulture, Michigan State University, East Lansing, Michigan 48824, USA
| | - David D Curdie
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, Nevada 89557, USA
| | - Samuel Wang
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, Nevada 89557, USA
| | - Hyun Don Ham
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, Nevada 89557, USA
| | | | - Jay S Kirkwood
- Metabolomics Core Facility, Institute for Integrative Genome Biology, University of California, Riverside, California 92521, USA
| | - Manhoi Hur
- Metabolomics Core Facility, Institute for Integrative Genome Biology, University of California, Riverside, California 92521, USA
| | - Juan K Q Solomon
- Department of Agriculture, Veterinary & Rangeland Sciences, University of Nevada, Reno, Nevada 89557, USA
| | - Jeffrey F Harper
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, Nevada 89557, USA
| | - Dylan K Kosma
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, Nevada 89557, USA
| | | | - John C Cushman
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, Nevada 89557, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, Michigan 48824, USA
| | - Annaliese S Mason
- Plant Breeding Department, INRES, The University of Bonn, Bonn 53115, Germany
| | - J Chris Pires
- Division of Biological Sciences, Bond Life Sciences Center, , University of Missouri, Columbia, Missouri 65211, USA
| | - Haibao Tang
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xingtan Zhang
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, Fujian Agriculture and Forestry University, Fuzhou, China
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15
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Hao Y, Fleming J, Petterson J, Lyons E, Edger PP, Pires JC, Thorne JL, Conant GC. Convergent evolution of polyploid genomes from across the eukaryotic tree of life. G3 Genes|Genomes|Genetics 2022; 12:6572348. [PMID: 35451464 PMCID: PMC9157103 DOI: 10.1093/g3journal/jkac094] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 04/15/2022] [Indexed: 11/14/2022]
Abstract
Abstract
By modeling the homoeologous gene losses that occurred in 50 genomes deriving from ten distinct polyploidy events, we show that the evolutionary forces acting on polyploids are remarkably similar, regardless of whether they occur in flowering plants, ciliates, fishes, or yeasts. We show that many of the events show a relative rate of duplicate gene loss before the first postpolyploidy speciation that is significantly higher than in later phases of their evolution. The relatively weak selective constraint experienced by the single-copy genes these losses produced leads us to suggest that most of the purely selectively neutral duplicate gene losses occur in the immediate postpolyploid period. Nearly all of the events show strong evidence of biases in the duplicate losses, consistent with them being allopolyploidies, with 2 distinct progenitors contributing to the modern species. We also find ongoing and extensive reciprocal gene losses (alternative losses of duplicated ancestral genes) between these genomes. With the exception of a handful of closely related taxa, all of these polyploid organisms are separated from each other by tens to thousands of reciprocal gene losses. As a result, it is very unlikely that viable diploid hybrid species could form between these taxa, since matings between such hybrids would tend to produce offspring lacking essential genes. It is, therefore, possible that the relatively high frequency of recurrent polyploidies in some lineages may be due to the ability of new polyploidies to bypass reciprocal gene loss barriers.
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Affiliation(s)
- Yue Hao
- Biodesign Center for Mechanisms of Evolution, Arizona State University , Tempe, AZ 85281, USA
| | - Jonathon Fleming
- Bioinformatics Research Center, North Carolina State University , Raleigh, NC 27695, USA
| | - Joanna Petterson
- Department of Biomedical Engineering, North Carolina State University , Raleigh, NC 27695, USA
| | - Eric Lyons
- School of Plant Sciences, University of Arizona , Tucson, AZ 85721, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University , East Lansing, MI 48824, USA
- Ecology, Evolutionary Biology and Behavior, Michigan State University , East Lansing, MI 48824, USA
| | - J Chris Pires
- International Plant Science Center, New York Botanical Garden , Bronx, NY 10458, USA
- Division of Biological Sciences, University of Missouri , Columbia, MO 65211, USA
- Bond Life Sciences Center, University of Missouri , Columbia, MO 65211, USA
| | - Jeffrey L Thorne
- Bioinformatics Research Center, North Carolina State University , Raleigh, NC 27695, USA
- Program in Genetics, North Carolina State University , Raleigh, NC 27695, USA
- Department of Statistics, North Carolina State University , Raleigh, NC 27695, USA
- Department of Biological Sciences, North Carolina State University , Raleigh, NC 27695, USA
| | - Gavin C Conant
- Bioinformatics Research Center, North Carolina State University , Raleigh, NC 27695, USA
- Program in Genetics, North Carolina State University , Raleigh, NC 27695, USA
- Department of Biological Sciences, North Carolina State University , Raleigh, NC 27695, USA
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16
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Abstract
BACKGROUND Transposable elements (TEs) are powerful creators of genotypic and phenotypic diversity due to their inherent mutagenic capabilities and in this way they serve as a deep reservoir of sequences for genomic variation. As agents of genetic disruption, a TE's potential to impact phenotype is partially a factor of its location in the genome. Previous research has shown TEs' ability to impact the expression of neighboring genes, however our understanding of this trend is hampered by the exceptional amount of diversity in the TE world, and a lack of publicly available computational methods that quantify the presence of TEs relative to genes. RESULTS Here, we have developed a tool to more easily quantify TE presence relative to genes through the use of only a gene and TE annotation, yielding a new metric we call TE Density. Briefly defined as the proportion of TE-occupied base-pairs relative to a window-size of the genome. This new pipeline reports TE density for each gene in the genome, for each type descriptor of TE (order and superfamily), and for multiple positions and distances relative to the gene (upstream, intragenic, and downstream) over sliding, user-defined windows. In this way, we overcome previous limitations to the study of TE-gene relationships by focusing on all TE types present in the genome, utilizing flexible genomic distances for measurement, and reporting a TE presence metric for every gene in the genome. CONCLUSIONS Together, this new tool opens up new avenues for studying TE-gene relationships, genome architecture, comparative genomics, and the tremendous diversity present of the TE world. TE Density is open-source and freely available at: https://github.com/sjteresi/TE_Density .
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Affiliation(s)
- Scott J Teresi
- Department of Horticulture, Michigan State University, East Lansing, Michigan, USA
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, Michigan, USA
| | | | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, Michigan, USA.
- Genetics and Genome Sciences Program, Michigan State University, East Lansing, Michigan, USA.
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17
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Edger PP, Iorizzo M, Bassil NV, Benevenuto J, Ferrão LFV, Giongo L, Hummer K, Lawas LMF, Leisner CP, Li C, Munoz PR, Ashrafi H, Atucha A, Babiker EM, Canales E, Chagné D, DeVetter L, Ehlenfeldt M, Espley RV, Gallardo K, Günther CS, Hardigan M, Hulse-Kemp AM, Jacobs M, Lila MA, Luby C, Main D, Mengist MF, Owens GL, Perkins-Veazie P, Polashock J, Pottorff M, Rowland LJ, Sims CA, Song GQ, Spencer J, Vorsa N, Yocca AE, Zalapa J. There and back again; historical perspective and future directions for Vaccinium breeding and research studies. Hortic Res 2022; 9:uhac083. [PMID: 35611183 PMCID: PMC9123236 DOI: 10.1093/hr/uhac083] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/22/2022] [Indexed: 06/02/2023]
Abstract
The genus Vaccinium L. (Ericaceae) contains a wide diversity of culturally and economically important berry crop species. Consumer demand and scientific research in blueberry (Vaccinium spp.) and cranberry (Vaccinium macrocarpon) have increased worldwide over the crops' relatively short domestication history (~100 years). Other species, including bilberry (Vaccinium myrtillus), lingonberry (Vaccinium vitis-idaea), and ohelo berry (Vaccinium reticulatum) are largely still harvested from the wild but with crop improvement efforts underway. Here, we present a review article on these Vaccinium berry crops on topics that span taxonomy to genetics and genomics to breeding. We highlight the accomplishments made thus far for each of these crops, along their journey from the wild, and propose research areas and questions that will require investments by the community over the coming decades to guide future crop improvement efforts. New tools and resources are needed to underpin the development of superior cultivars that are not only more resilient to various environmental stresses and higher yielding, but also produce fruit that continue to meet a variety of consumer preferences, including fruit quality and health related traits.
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Affiliation(s)
- Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- MSU AgBioResearch, Michigan State University, East Lansing, MI, 48824, USA
| | - Massimo Iorizzo
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC USA
- Department of Horticultural Science, North Carolina State University, Raleigh, NC USA
| | - Nahla V Bassil
- USDA-ARS, National Clonal Germplasm Repository, Corvallis, OR 97333, USA
| | - Juliana Benevenuto
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - Luis Felipe V Ferrão
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - Lara Giongo
- Fondazione Edmund Mach - Research and Innovation CentreItaly
| | - Kim Hummer
- USDA-ARS, National Clonal Germplasm Repository, Corvallis, OR 97333, USA
| | - Lovely Mae F Lawas
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Courtney P Leisner
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Changying Li
- Phenomics and Plant Robotics Center, College of Engineering, University of Georgia, Athens, USA
| | - Patricio R Munoz
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - Hamid Ashrafi
- Department of Horticultural Science, North Carolina State University, Raleigh, NC USA
| | - Amaya Atucha
- Department of Horticulture, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Ebrahiem M Babiker
- USDA-ARS Southern Horticultural Laboratory, Poplarville, MS 39470-0287, USA
| | - Elizabeth Canales
- Department of Agricultural Economics, Mississippi State University, Mississippi State, MS 39762, USA
| | - David Chagné
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston North, New Zealand
| | - Lisa DeVetter
- Department of Horticulture, Washington State University Northwestern Washington Research and Extension Center, Mount Vernon, WA, 98221, USA
| | - Mark Ehlenfeldt
- SEBS, Plant Biology, Rutgers University, New Brunswick NJ 01019 USA
| | - Richard V Espley
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston North, New Zealand
| | - Karina Gallardo
- School of Economic Sciences, Washington State University, Puyallup, WA 98371, USA
| | - Catrin S Günther
- The New Zealand Institute for Plant and Food Research Limited (PFR), Palmerston North, New Zealand
| | - Michael Hardigan
- USDA-ARS, Horticulture Crops Research Unit, Corvallis, OR 97333, USA
| | - Amanda M Hulse-Kemp
- USDA-ARS, Genomics and Bioinformatics Research Unit, Raleigh, NC 27695, USA
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC 27695, USA
| | - MacKenzie Jacobs
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48823, USA
| | - Mary Ann Lila
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC USA
| | - Claire Luby
- USDA-ARS, Horticulture Crops Research Unit, Corvallis, OR 97333, USA
| | - Dorrie Main
- Department of Horticulture, Washington State University, Pullman, WA, 99163, USA
| | - Molla F Mengist
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC USA
- Department of Horticultural Science, North Carolina State University, Raleigh, NC USA
| | | | | | - James Polashock
- SEBS, Plant Biology, Rutgers University, New Brunswick NJ 01019 USA
| | - Marti Pottorff
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC USA
| | - Lisa J Rowland
- USDA-ARS, Genetic Improvement of Fruits and Vegetables Laboratory, Beltsville, MD 20705, USA
| | - Charles A Sims
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL 32611, USA
| | - Guo-qing Song
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Jessica Spencer
- Department of Horticultural Science, North Carolina State University, Raleigh, NC USA
| | - Nicholi Vorsa
- SEBS, Plant Biology, Rutgers University, New Brunswick NJ 01019 USA
| | - Alan E Yocca
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Juan Zalapa
- USDA-ARS, VCRU, Department of Horticulture, University of Wisconsin-Madison, Madison, WI 53706, USA
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18
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Edger PP. The power of chromosome-scale, haplotype-resolved genomes. Mol Plant 2022; 15:393-395. [PMID: 35202865 DOI: 10.1016/j.molp.2022.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA; Genetics and Genome Sciences, Michigan State University, East Lansing, MI 48824, USA.
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19
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Yocca AE, Edger PP. Machine learning approaches to identify core and dispensable genes in pangenomes. Plant Genome 2022; 15:e20135. [PMID: 34533282 DOI: 10.1002/tpg2.20135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/16/2021] [Indexed: 05/25/2023]
Abstract
A gene in a given taxonomic group is either present in every individual (core) or absent in at least a single individual (dispensable). Previous pangenomic studies have identified certain functional differences between core and dispensable genes. However, identifying if a gene belongs to the core or dispensable portion of the genome requires the construction of a pangenome, which involves sequencing the genomes of many individuals. Here we aim to leverage the previously characterized core and dispensable gene content for two grass species [Brachypodium distachyon (L.) P. Beauv. and Oryza sativa L.] to construct a machine learning model capable of accurately classifying genes as core or dispensable using only a single annotated reference genome. Such a model may mitigate the need for pangenome construction, an expensive hurdle especially in orphan crops, which often lack the adequate genomic resources.
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Affiliation(s)
- Alan E Yocca
- Dep. of Plant Biology, Michigan State Univ., East Lansing, MI, 48824, USA
- Dep. of Horticulture, Michigan State Univ., East Lansing, MI, 48824, USA
| | - Patrick P Edger
- Dep. of Horticulture, Michigan State Univ., East Lansing, MI, 48824, USA
- Genetics and Genome Sciences Program, Michigan State Univ., East Lansing, MI, 48824, USA
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20
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Yocca AE, Edger PP. Current status and future perspectives on the evolution of cis-regulatory elements in plants. Curr Opin Plant Biol 2022; 65:102139. [PMID: 34837823 DOI: 10.1016/j.pbi.2021.102139] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/20/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
Cis-regulatory elements (CREs) are short stretches (∼5-15 base pairs) of DNA capable of being bound by a transcription factor and influencing the expression of nearby genes. These regions are of great interest to anyone studying the relationship between phenotype and genotype as these sequences often dictate genes' spatio-temporal expression. Indeed, several associative signals between genotype and phenotype are known to lie outside of protein-coding regions. Therefore, a key to understand evolutionary biology requires their characterization in current and future genome assemblies. In this review, we cover some recent examples of how CRE variation contributes to phenotypic evolution, discuss evidence for the selective pressures experienced by non-coding regions of the genome, and consider several studies on accessible chromatin regions in plants and what they can tell us about CREs. Finally, we discuss how current advances in sequencing technologies will improve our knowledge of CRE variation.
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Affiliation(s)
- Alan E Yocca
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA; Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA; Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI, 48824, USA.
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21
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Hu Y, Feng C, Yang L, Edger PP, Kang M. Genomic population structure and local adaptation of the wild strawberry Fragaria nilgerrensis. Hortic Res 2022; 9:uhab059. [PMID: 35043184 PMCID: PMC8993681 DOI: 10.1093/hr/uhab059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/15/2021] [Indexed: 06/14/2023]
Abstract
The crop wild relative, Fragaria nilgerrensis, is adapted to a variety of diverse habitats across its native range in China. Thus, discoveries made in this species could serve useful to guide the development of new superior strawberry cultivars that are resilient to new or variable environments. However, the genetic diversity and genetic architecture of traits in this species underlying important adaptive traits remain poorly understood. Here, we used whole-genome resequencing data from 193 F. nilgerrensis individuals spanning the distribution range in China to investigate the genetic diversity, population structure and the genomic basis of local adaptation. We identified four genetic groups, with the western group located in Hengduan Mountains exhibited the highest genetic diversity. Redundancy analysis suggests that both environment and geographic variables shaped a significant proportion of genomic variation. Our analyses revealed that the environmental difference explains more of the observed genetic variation than geographic distance. This suggests that adaptation to distinct habitats, unique combination of abiotic factors, likely drove genetic differentiation. Lastly, by implementing selective sweeps scans and genome-environment association analysis throughout the genome, we identified the genetic variation associated with local adaptation and investigated the functions of putative candidate genes in F. nilgerrensis.
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Affiliation(s)
- Yuxi Hu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Feng
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Lihua Yang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Ming Kang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
- Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China
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22
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Bird KA, Hardigan MA, Ragsdale AP, Knapp SJ, VanBuren R, Edger PP. Diversification, spread, and admixture of octoploid strawberry in the Western Hemisphere. Am J Bot 2021; 108:2269-2281. [PMID: 34636416 PMCID: PMC9299191 DOI: 10.1002/ajb2.1776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/13/2021] [Accepted: 08/18/2021] [Indexed: 05/11/2023]
Abstract
PREMISE Polyploid species often have complex evolutionary histories that have, until recently, been intractable due to limitations of genomic resources. While recent work has further uncovered the evolutionary history of the octoploid strawberry (Fragaria L.), there are still open questions. Much is unknown about the evolutionary relationship of the wild octoploid species, Fragaria virginiana and Fragaria chiloensis, and gene flow within and among species after the formation of the octoploid genome. METHODS We leveraged a collection of wild octoploid ecotypes of strawberry representing the recognized subspecies and ranging from Alaska to southern Chile, and a high-density SNP array to investigate wild octoploid strawberry evolution. Evolutionary relationships were interrogated with phylogenetic analysis and genetic clustering algorithms. Additionally, admixture among and within species is assessed with model-based and tree-based approaches. RESULTS Phylogenetic analysis revealed that the two octoploid strawberry species are monophyletic sister lineages. The genetic clustering results show substructure between North and South American F. chiloensis populations. Additionally, model-based and tree-based methods support gene flow within and among the two octoploid species, including newly identified admixture in the Hawaiian F. chiloensis subsp. sandwicensis population. CONCLUSIONS F. virginiana and F. chiloensis are supported as monophyletic and sister lineages. All but one of the subspecies show extensive paraphyly. Furthermore, phylogenetic relationships among F. chiloensis populations supports a single population range expansion southward from North America. The inter- and intraspecific relationships of octoploid strawberry are complex and suggest substantial gene flow between sympatric populations among and within species.
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Affiliation(s)
- Kevin A. Bird
- Department of HorticultureMichigan State UniversityEast LansingMichigan48823USA
- Ecology, Evolution and Behavior ProgramMichigan State UniversityEast LansingMichigan48823USA
| | | | - Aaron P. Ragsdale
- National Laboratory of Genomics for Biodiversity (LANGEBIO)Unit of Advanced Genomics, CINVESTAVIrapuatoMexico
| | - Steven J. Knapp
- Department of Plant SciencesUniversity of CaliforniaDavisCalifornia95616USA
| | - Robert VanBuren
- Department of HorticultureMichigan State UniversityEast LansingMichigan48823USA
- Plant Resilience InstituteMichigan State UniversityEast LansingMichigan48824USA
| | - Patrick P. Edger
- Department of HorticultureMichigan State UniversityEast LansingMichigan48823USA
- Ecology, Evolution and Behavior ProgramMichigan State UniversityEast LansingMichigan48823USA
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23
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Hardigan MA, Lorant A, Pincot DDA, Feldmann MJ, Famula RA, Acharya CB, Lee S, Verma S, Whitaker VM, Bassil N, Zurn J, Cole GS, Bird K, Edger PP, Knapp SJ. Unraveling the Complex Hybrid Ancestry and Domestication History of Cultivated Strawberry. Mol Biol Evol 2021; 38:2285-2305. [PMID: 33507311 PMCID: PMC8136507 DOI: 10.1093/molbev/msab024] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Cultivated strawberry (Fragaria × ananassa) is one of our youngest domesticates, originating in early eighteenth-century Europe from spontaneous hybrids between wild allo-octoploid species (Fragaria chiloensis and Fragaria virginiana). The improvement of horticultural traits by 300 years of breeding has enabled the global expansion of strawberry production. Here, we describe the genomic history of strawberry domestication from the earliest hybrids to modern cultivars. We observed a significant increase in heterozygosity among interspecific hybrids and a decrease in heterozygosity among domesticated descendants of those hybrids. Selective sweeps were found across the genome in early and modern phases of domestication—59–76% of the selectively swept genes originated in the three less dominant ancestral subgenomes. Contrary to the tenet that genetic diversity is limited in cultivated strawberry, we found that the octoploid species harbor massive allelic diversity and that F. × ananassa harbors as much allelic diversity as either wild founder. We identified 41.8 M subgenome-specific DNA variants among resequenced wild and domesticated individuals. Strikingly, 98% of common alleles and 73% of total alleles were shared between wild and domesticated populations. Moreover, genome-wide estimates of nucleotide diversity were virtually identical in F. chiloensis,F. virginiana, and F. × ananassa (π = 0.0059–0.0060). We found, however, that nucleotide diversity and heterozygosity were significantly lower in modern F. × ananassa populations that have experienced significant genetic gains and have produced numerous agriculturally important cultivars.
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Affiliation(s)
- Michael A Hardigan
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
| | - Anne Lorant
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
| | - Dominique D A Pincot
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
| | - Mitchell J Feldmann
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
| | - Randi A Famula
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
| | - Charlotte B Acharya
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
| | - Seonghee Lee
- IFAS Gulf Coast Research and Education Center, Department of Horticulture, University of Florida, Wimauma, FL 33598, USA
| | - Sujeet Verma
- IFAS Gulf Coast Research and Education Center, Department of Horticulture, University of Florida, Wimauma, FL 33598, USA
| | - Vance M Whitaker
- IFAS Gulf Coast Research and Education Center, Department of Horticulture, University of Florida, Wimauma, FL 33598, USA
| | - Nahla Bassil
- USDA-ARS, National Clonal Germplasm Repository, Corvallis, OR 92182, USA
| | - Jason Zurn
- USDA-ARS, National Clonal Germplasm Repository, Corvallis, OR 92182, USA
| | - Glenn S Cole
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
| | - Kevin Bird
- Department of Horticultural Science, Michigan State University, East Lansing, MI 48824, USA
| | - Patrick P Edger
- Department of Horticultural Science, Michigan State University, East Lansing, MI 48824, USA
| | - Steven J Knapp
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
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24
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Alger EI, Platts AE, Deb SK, Luo X, Ou S, Cao Y, Hummer KE, Xiong Z, Knapp SJ, Liu Z, McKain MR, Edger PP. Chromosome-Scale Genome for a Red-Fruited, Perpetual Flowering and Runnerless Woodland Strawberry ( Fragaria vesca). Front Genet 2021; 12:671371. [PMID: 34335685 PMCID: PMC8323839 DOI: 10.3389/fgene.2021.671371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/31/2021] [Indexed: 12/04/2022] Open
Affiliation(s)
- Elizabeth I Alger
- Department of Horticulture, Michigan State University, East Lansing, MI, United States
| | - Adrian E Platts
- Department of Horticulture, Michigan State University, East Lansing, MI, United States
| | - Sontosh K Deb
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, United States.,Department of Forestry and Environmental Science, Shahjalal University of Science and Technology, Sylhet, Bangladesh
| | - Xi Luo
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, United States
| | - Shujun Ou
- Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA, United States
| | - Yao Cao
- College of Life Science, Inner Mongolia University, Hohhot, China
| | - Kim E Hummer
- USDA ARS National Clonal Germplasm Repository, Corvallis, OR, United States
| | - Zhiyong Xiong
- College of Life Science, Inner Mongolia University, Hohhot, China
| | - Steven J Knapp
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Zhongchi Liu
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, United States
| | - Michael R McKain
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, United States
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, United States.,Genetics and Genome Sciences Program, Michigan State University, East Lansing, MI, United States
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25
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Wu C, Deng C, Hilario E, Albert NW, Lafferty D, Grierson ERP, Plunkett BJ, Elborough C, Saei A, Günther CS, Ireland H, Yocca A, Edger PP, Jaakola L, Karppinen K, Grande A, Kylli R, Lehtola VP, Allan AC, Espley RV, Chagné D. A chromosome-scale assembly of the bilberry genome identifies a complex locus controlling berry anthocyanin composition. Mol Ecol Resour 2021; 22:345-360. [PMID: 34260155 DOI: 10.1111/1755-0998.13467] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/22/2021] [Accepted: 07/05/2021] [Indexed: 12/16/2022]
Abstract
Bilberry (Vaccinium myrtillus L.) belongs to the Vaccinium genus, which includes blueberries (Vaccinium spp.) and cranberry (V. macrocarpon). Unlike its cultivated relatives, bilberry remains largely undomesticated, with berry harvesting almost entirely from the wild. As such, it represents an ideal target for genomic analysis, providing comparisons with the domesticated Vaccinium species. Bilberry is prized for its taste and health properties and has provided essential nutrition for Northern European indigenous populations. It contains high concentrations of phytonutrients, with perhaps the most important being the purple colored anthocyanins, found in both skin and flesh. Here, we present the first bilberry genome assembly, comprising 12 pseudochromosomes assembled using Oxford Nanopore (ONT) and Hi-C Technologies. The pseudochromosomes represent 96.6% complete BUSCO genes with an assessed LAI score of 16.3, showing a high conservation of synteny against the blueberry genome. Kmer analysis showed an unusual third peak, indicating the sequenced samples may have been from two individuals. The alternate alleles were purged so that the final assembly represents only one haplotype. A total of 36,404 genes were annotated after nearly 48% of the assembly was masked to remove repeats. To illustrate the genome quality, we describe the complex MYBA locus, and identify the key regulating MYB genes that determine anthocyanin production. The new bilberry genome builds on the genomic resources and knowledge of Vaccinium species, to help understand the genetics underpinning some of the quality attributes that breeding programs aspire to improve. The high conservation of synteny between bilberry and blueberry genomes means that comparative genome mapping can be applied to transfer knowledge about marker-trait association between these two species, as the loci involved in key characters are orthologous.
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Affiliation(s)
- Chen Wu
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand.,Genomics Aotearoa, Dunedin, New Zealand
| | - Cecilia Deng
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand.,Genomics Aotearoa, Dunedin, New Zealand
| | - Elena Hilario
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand.,Genomics Aotearoa, Dunedin, New Zealand
| | | | - Declan Lafferty
- PFR, Palmerston North, New Zealand.,School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | | | - Blue J Plunkett
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand
| | - Caitlin Elborough
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand
| | - Ali Saei
- BioLumic Limited, Palmerston North, New Zealand
| | - Catrin S Günther
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand
| | - Hilary Ireland
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand
| | - Alan Yocca
- Department of Plant Biology, Michigan State University, East Lansing, Michigan, USA.,Department of Horticultural Science, Michigan State University, East Lansing, Michigan, USA
| | - Patrick P Edger
- Department of Plant Biology, Michigan State University, East Lansing, Michigan, USA
| | - Laura Jaakola
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, Norway.,NIBIO, Norwegian Institute of Bioeconomy Research, Ås, Norway
| | - Katja Karppinen
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, Norway
| | | | - Ritva Kylli
- History, Culture and Communication studies, University of Oulu, Oulu, Finland
| | | | - Andrew C Allan
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand.,School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Richard V Espley
- The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, New Zealand
| | - David Chagné
- Genomics Aotearoa, Dunedin, New Zealand.,PFR, Palmerston North, New Zealand
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26
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Beric A, Mabry ME, Harkess AE, Brose J, Schranz ME, Conant GC, Edger PP, Meyers BC, Pires JC. Comparative phylogenetics of repetitive elements in a diverse order of flowering plants (Brassicales). G3 (Bethesda) 2021; 11:jkab140. [PMID: 33993297 PMCID: PMC8495927 DOI: 10.1093/g3journal/jkab140] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 04/10/2021] [Indexed: 11/14/2022]
Abstract
Genome sizes of plants have long piqued the interest of researchers due to the vast differences among organisms. However, the mechanisms that drive size differences have yet to be fully understood. Two important contributing factors to genome size are expansions of repetitive elements, such as transposable elements (TEs), and whole-genome duplications (WGD). Although studies have found correlations between genome size and both TE abundance and polyploidy, these studies typically test for these patterns within a genus or species. The plant order Brassicales provides an excellent system to further test if genome size evolution patterns are consistent across larger time scales, as there are numerous WGDs. This order is also home to one of the smallest plant genomes, Arabidopsis thaliana-chosen as the model plant system for this reason-as well as to species with very large genomes. With new methods that allow for TE characterization from low-coverage genome shotgun data and 71 taxa across the Brassicales, we confirm the correlation between genome size and TE content, however, we are unable to reconstruct phylogenetic relationships and do not detect any shift in TE abundance associated with WGD.
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Affiliation(s)
- Aleksandra Beric
- Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Makenzie E Mabry
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA
| | - Alex E Harkess
- Department of Crop, Soil, and Environmental Sciences, Auburn University, Auburn, AL 36849, USA
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA
| | - Julia Brose
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
| | - M Eric Schranz
- Biosystematics Group, Wageningen University, Wageningen 6700 AA, The Netherlands
| | - Gavin C Conant
- Bioinformatics Research Center, Program in Genetics and Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Department of Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI 48824, USA
| | - Blake C Meyers
- Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA
| | - J Chris Pires
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA
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27
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Mabry ME, Turner-Hissong SD, Gallagher EY, McAlvay AC, An H, Edger PP, Moore JD, Pink DAC, Teakle GR, Stevens CJ, Barker G, Labate J, Fuller DQ, Allaby RG, Beissinger T, Decker JE, Gore MA, Pires JC. The Evolutionary History of Wild, Domesticated, and Feral Brassica Oleracea (Brassicaceae). Mol Biol Evol 2021; 38:4419-4434. [PMID: 34157722 PMCID: PMC8476135 DOI: 10.1093/molbev/msab183] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Understanding the evolutionary history of crops, including identifying wild relatives, helps to provide insight for conservation and crop breeding efforts. Cultivated Brassica oleracea has intrigued researchers for centuries due to its wide diversity in forms, which include cabbage, broccoli, cauliflower, kale, kohlrabi, and Brussels sprouts. Yet, the evolutionary history of this species remains understudied. With such different vegetables produced from a single species, B. oleracea is a model organism for understanding the power of artificial selection. Persistent challenges in the study of B. oleracea include conflicting hypotheses regarding domestication and the identity of the closest living wild relative. Using newly generated RNA-seq data for a diversity panel of 224 accessions, which represents 14 different B. oleracea crop types and nine potential wild progenitor species, we integrate phylogenetic and population genetic techniques with ecological niche modeling, archaeological, and literary evidence to examine relationships among cultivars and wild relatives to clarify the origin of this horticulturally important species. Our analyses point to the Aegean endemic B. cretica as the closest living relative of cultivated B. oleracea, supporting an origin of cultivation in the Eastern Mediterranean region. Additionally, we identify several feral lineages, suggesting that cultivated plants of this species can revert to a wild-like state with relative ease. By expanding our understanding of the evolutionary history in B. oleracea, these results contribute to a growing body of knowledge on crop domestication that will facilitate continued breeding efforts including adaptation to changing environmental conditions.
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Affiliation(s)
- Makenzie E Mabry
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, U.S.A
| | | | - Evan Y Gallagher
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, U.S.A
| | - Alex C McAlvay
- Institute of Economic Botany, The New York Botanical Garden, Bronx, NY, U.S.A
| | - Hong An
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, U.S.A
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, MI, USA
| | | | - David A C Pink
- Agriculture and Environment Department, Harper Adams University, UK
| | | | - Chris J Stevens
- School of Archaeology and Museology, Peking University, Beijing, China.,Institute of Archaeology, University College London, London, UK
| | - Guy Barker
- School of Life Science, University of Warwick, UK
| | - Joanne Labate
- USDA, ARS Plant Genetic Resources Unit, Cornell AgriTech, Geneva, NY, USA
| | - Dorian Q Fuller
- Institute of Archaeology, University College London, London, UK.,School of Cultural Heritage, Northwest University, Xi'an, Shaanxi, China.,Department of Archaeology, Max Planck Institute for the Science of Human History, Jena, Germany
| | | | - Timothy Beissinger
- Division of Plant Breeding Methodology, Department of Crop Sciences, University of Goettingen, Goettingen, Germany
| | - Jared E Decker
- Division of Animal Sciences, University of Missouri, Columbia, USA
| | - Michael A Gore
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, U.S.A
| | - J Chris Pires
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, U.S.A
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28
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Hao Y, Mabry ME, Edger PP, Freeling M, Zheng C, Jin L, VanBuren R, Colle M, An H, Abrahams RS, Washburn JD, Qi X, Barry K, Daum C, Shu S, Schmutz J, Sankoff D, Barker MS, Lyons E, Pires JC, Conant GC. The contributions from the progenitor genomes of the mesopolyploid Brassiceae are evolutionarily distinct but functionally compatible. Genome Res 2021; 31:799-810. [PMID: 33863805 PMCID: PMC8092008 DOI: 10.1101/gr.270033.120] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 03/05/2021] [Indexed: 01/08/2023]
Abstract
The members of the tribe Brassiceae share a whole-genome triplication (WGT), and one proposed model for its formation is a two-step pair of hybridizations producing hexaploid descendants. However, evidence for this model is incomplete, and the evolutionary and functional constraints that drove evolution after the hexaploidy are even less understood. Here, we report a new genome sequence of Crambe hispanica, a species sister to most sequenced Brassiceae. Using this new genome and three others that share the hexaploidy, we traced the history of gene loss after the WGT using the Polyploidy Orthology Inference Tool (POInT). We confirm the two-step formation model and infer that there was a significant temporal gap between those two allopolyploidizations, with about a third of the gene losses from the first two subgenomes occurring before the arrival of the third. We also, for the 90,000 individual genes in our study, make parental subgenome assignments, inferring, with measured uncertainty, from which of the progenitor genomes of the allohexaploidy each gene derives. We further show that each subgenome has a statistically distinguishable rate of homoeolog losses. There is little indication of functional distinction between the three subgenomes: the individual subgenomes show no patterns of functional enrichment, no excess of shared protein-protein or metabolic interactions between their members, and no biases in their likelihood of having experienced a recent selective sweep. We propose a "mix and match" model of allopolyploidy, in which subgenome origin drives homoeolog loss propensities but where genes from different subgenomes function together without difficulty.
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Affiliation(s)
- Yue Hao
- Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Makenzie E Mabry
- Division of Biological Sciences, University of Missouri-Columbia, Columbia, Missouri 65211, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, Michigan 48824, USA
- Genetics and Genome Sciences, Michigan State University, East Lansing, Michigan 48824, USA
| | - Michael Freeling
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
| | - Chunfang Zheng
- Department of Mathematics and Statistics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Lingling Jin
- Department of Computer Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, Michigan 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan 48824, USA
| | - Marivi Colle
- Department of Horticulture, Michigan State University, East Lansing, Michigan 48824, USA
| | - Hong An
- Division of Biological Sciences, University of Missouri-Columbia, Columbia, Missouri 65211, USA
| | - R Shawn Abrahams
- Division of Biological Sciences, University of Missouri-Columbia, Columbia, Missouri 65211, USA
| | - Jacob D Washburn
- Plant Genetics Research Unit, USDA-ARS, Columbia, Missouri 65211, USA
| | - Xinshuai Qi
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona 85721, USA
| | - Kerrie Barry
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Christopher Daum
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Shengqiang Shu
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jeremy Schmutz
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA
| | - David Sankoff
- Department of Mathematics and Statistics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Michael S Barker
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona 85721, USA
| | - Eric Lyons
- School of Plant Sciences, University of Arizona, Tucson, Arizona 85721, USA
- BIO5 Institute, University of Arizona, Tucson, Arizona 85721, USA
| | - J Chris Pires
- Division of Biological Sciences, University of Missouri-Columbia, Columbia, Missouri 65211, USA
- Informatics Institute, University of Missouri-Columbia, Columbia, Missouri 65211, USA
| | - Gavin C Conant
- Bioinformatics Research Center, North Carolina State University, Raleigh, North Carolina 27695, USA
- Program in Genetics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695, USA
- Division of Animal Sciences, University of Missouri-Columbia, Columbia, Missouri 65211, USA
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29
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Bird KA, Niederhuth CE, Ou S, Gehan M, Pires JC, Xiong Z, VanBuren R, Edger PP. Replaying the evolutionary tape to investigate subgenome dominance in allopolyploid Brassica napus. New Phytol 2021; 230:354-371. [PMID: 33280122 PMCID: PMC7986222 DOI: 10.1111/nph.17137] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 11/30/2020] [Indexed: 05/03/2023]
Abstract
Allopolyploidisation merges evolutionarily distinct parental genomes (subgenomes) into a single nucleus. A frequent observation is that one subgenome is 'dominant' over the other subgenome, often being more highly expressed. Here, we 'replayed the evolutionary tape' with six isogenic resynthesised Brassica napus allopolyploid lines and investigated subgenome dominance patterns over the first 10 generations postpolyploidisation. We found that the same subgenome was consistently more dominantly expressed in all lines and generations and that >70% of biased gene pairs showed the same dominance patterns across all lines and an in silico hybrid of the parents. Gene network analyses indicated an enrichment for network interactions and several biological functions for the Brassica oleracea subgenome biased pairs, but no enrichment was identified for Brassica rapa subgenome biased pairs. Furthermore, DNA methylation differences between subgenomes mirrored the observed gene expression bias towards the dominant subgenome in all lines and generations. Many of these differences in gene expression and methylation were also found when comparing the progenitor genomes, suggesting that subgenome dominance is partly related to parental genome differences rather than just a byproduct of allopolyploidisation. These findings demonstrate that 'replaying the evolutionary tape' in an allopolyploid results in largely repeatable and predictable subgenome expression dominance patterns.
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Affiliation(s)
- Kevin A. Bird
- Department of HorticultureMichigan State UniversityEast LansingMI48824USA
- Ecology, Evolutionary Biology and BehaviorMichigan State UniversityEast LansingMI48824USA
| | - Chad E. Niederhuth
- Department of Plant BiologyMichigan State UniversityEast LansingMI48824USA
| | - Shujun Ou
- Department of Ecology, Evolution and Organismal BiologyIowa State UniversityAmesIA50011USA
| | - Malia Gehan
- Donald Danforth Plant Science CenterSt LouisMO63123USA
| | - J. Chris Pires
- Division of Biological SciencesUniversity of MissouriColumbiaMO65211USA
| | - Zhiyong Xiong
- Key Laboratory of Herbage and Endemic Crop BiotechnologyInner Mongolia UniversityHohhot010070China
| | - Robert VanBuren
- Department of HorticultureMichigan State UniversityEast LansingMI48824USA
- Plant Resilience InstituteMichigan State UniversityEast LansingMI48824USA
| | - Patrick P. Edger
- Department of HorticultureMichigan State UniversityEast LansingMI48824USA
- Ecology, Evolutionary Biology and BehaviorMichigan State UniversityEast LansingMI48824USA
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30
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Abstract
Recent pangenome studies have revealed a large fraction of the gene content within a species exhibits presence-absence variation (PAV). However, coding regions alone provide an incomplete assessment of functional genomic sequence variation at the species level. Little to no attention has been paid to noncoding regulatory regions in pangenome studies, though these sequences directly modulate gene expression and phenotype. To uncover regulatory genetic variation, we generated chromosome-scale genome assemblies for thirty Arabidopsis thaliana accessions from multiple distinct habitats and characterized species level variation in Conserved Noncoding Sequences (CNS). Our analyses uncovered not only PAV and positional variation (PosV) but that diversity in CNS is nonrandom, with variants shared across different accessions. Using evolutionary analyses and chromatin accessibility data, we provide further evidence supporting roles for conserved and variable CNS in gene regulation. Additionally, our data suggests that transposable elements contribute to CNS variation. Characterizing species-level diversity in all functional genomic sequences may later uncover previously unknown mechanistic links between genotype and phenotype.
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Affiliation(s)
- Alan E Yocca
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA.,Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Zefu Lu
- Department of Genetics, University of Georgia, Athens, GA, USA
| | | | - Michael Freeling
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA
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31
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Xiong Z, Gaeta RT, Edger PP, Cao Y, Zhao K, Zhang S, Pires JC. Chromosome inheritance and meiotic stability in allopolyploid Brassica napus. G3 (Bethesda) 2021; 11:6044140. [PMID: 33704431 PMCID: PMC8022990 DOI: 10.1093/g3journal/jkaa011] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/05/2020] [Indexed: 12/23/2022]
Abstract
Homoeologous recombination, aneuploidy, and other genetic changes are common in resynthesized allopolyploid Brassica napus. In contrast, the chromosomes of cultivars have long been considered to be meiotically stable. To gain a better understanding of the underlying mechanisms leading to stabilization in the allopolyploid, the behavior of chromosomes during meiosis can be compared by unambiguous chromosome identification between resynthesized and natural B. napus. Compared with natural B. napus, resynthesized lines show high rates of nonhomologous centromere association, homoeologous recombination leading to translocation, homoeologous chromosome replacement, and association and breakage of 45S rDNA loci. In both natural and resynthesized B. napus, we observed low rates of univalents, A–C bivalents, and early sister chromatid separations. Reciprocal homoeologous chromosome exchanges and double reductions were photographed for the first time in meiotic telophase I. Meiotic errors were non-uniformly distributed across the genome in resynthesized B. napus, and in particular homoeologs sharing synteny along their entire length exhibited multivalents at diakinesis and polysomic inheritance at telophase I. Natural B. napus appeared to resolve meiotic errors mainly by suppressing homoeologous pairing, resolving nonhomologous centromere associations and 45S rDNA associations before diakinesis, and reducing homoeologous cross-overs.
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Affiliation(s)
- Zhiyong Xiong
- Key Laboratory of Herbage and Endemic Crop Biotechnology, Ministry of Education, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China.,Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Robert T Gaeta
- Bayer's Crop Science Division, Chesterfield, MO 63017, USA
| | - Patrick P Edger
- Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA.,Department of Horticulture, Michigan State University, East Lansing, MI 48823, USA
| | - Yao Cao
- Key Laboratory of Herbage and Endemic Crop Biotechnology, Ministry of Education, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China
| | - Kanglu Zhao
- Key Laboratory of Herbage and Endemic Crop Biotechnology, Ministry of Education, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China
| | - Siqi Zhang
- Key Laboratory of Herbage and Endemic Crop Biotechnology, Ministry of Education, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China
| | - J Chris Pires
- Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA
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32
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Lou P, Woody S, Greenham K, VanBuren R, Colle M, Edger PP, Sartor R, Zheng Y, Levendoski N, Lim J, So C, Stoveken B, Woody T, Zhao J, Shen S, Amasino RM, McClung CR. Genetic and genomic resources to study natural variation in Brassica rapa. Plant Direct 2020; 4:e00285. [PMID: 33364543 PMCID: PMC7755128 DOI: 10.1002/pld3.285] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 05/05/2023]
Abstract
The globally important crop Brassica rapa, a close relative of Arabidopsis, is an excellent system for modeling our current knowledge of plant growth on a morphologically diverse crop. The long history of B. rapa domestication across Asia and Europe provides a unique collection of locally adapted varieties that span large climatic regions with various abiotic and biotic stress-tolerance traits. This diverse gene pool provides a rich source of targets with the potential for manipulation toward the enhancement of productivity of crops both within and outside the Brassicaceae. To expand the genetic resources available to study natural variation in B. rapa, we constructed an Advanced Intercross Recombinant Inbred Line (AI-RIL) population using B. rapa subsp. trilocularis (Yellow Sarson) R500 and the B. rapa subsp. parachinensis (Cai Xin) variety L58. Our current understanding of genomic structure variation across crops suggests that a single reference genome is insufficient for capturing the genetic diversity within a species. To complement this AI-RIL population and current and future B. rapa genomic resources, we generated a de novo genome assembly of the B. rapa subsp. trilocularis (Yellow Sarson) variety R500, the maternal parent of the AI-RIL population. The genetic map for the R500 x L58 population generated using this de novo genome was used to map Quantitative Trait Loci (QTL) for seed coat color and revealed the improved mapping resolution afforded by this new assembly.
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Affiliation(s)
- Ping Lou
- Department of Biological SciencesDartmouth CollegeHanoverNHUSA
| | - Scott Woody
- Department of BiochemistryUniversity of WisconsinMadisonWIUSA
| | - Kathleen Greenham
- Department of Biological SciencesDartmouth CollegeHanoverNHUSA
- Department of Plant and Microbial BiologyUniversity of MinnesotaSt. PaulMNUSA
| | - Robert VanBuren
- Department of HorticultureMichigan State UniversityEast LansingMIUSA
| | - Marivi Colle
- Department of HorticultureMichigan State UniversityEast LansingMIUSA
| | - Patrick P. Edger
- Department of HorticultureMichigan State UniversityEast LansingMIUSA
| | - Ryan Sartor
- Crop and Soil SciencesNorth Carolina State UniversityRaleighNCUSA
| | - Yakun Zheng
- Department of Biological SciencesDartmouth CollegeHanoverNHUSA
- State Key Laboratory of North China Crop Improvement and RegulationLaboratory of Vegetable Germplasm Innovation and Utilization of HebeiCollaborative Innovation Center of Vegetable Industry in HebeiDepartment of HorticultureHebei Agricultural UniversityBaodingChina
| | | | - Jan Lim
- Department of BiochemistryUniversity of WisconsinMadisonWIUSA
| | - Calvin So
- Department of BiochemistryUniversity of WisconsinMadisonWIUSA
| | - Brian Stoveken
- Department of BiochemistryUniversity of WisconsinMadisonWIUSA
| | - Timothy Woody
- Department of BiochemistryUniversity of WisconsinMadisonWIUSA
| | - Jianjun Zhao
- State Key Laboratory of North China Crop Improvement and RegulationLaboratory of Vegetable Germplasm Innovation and Utilization of HebeiCollaborative Innovation Center of Vegetable Industry in HebeiDepartment of HorticultureHebei Agricultural UniversityBaodingChina
| | - Shuxing Shen
- State Key Laboratory of North China Crop Improvement and RegulationLaboratory of Vegetable Germplasm Innovation and Utilization of HebeiCollaborative Innovation Center of Vegetable Industry in HebeiDepartment of HorticultureHebei Agricultural UniversityBaodingChina
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33
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Mabry ME, Brose JM, Blischak PD, Sutherland B, Dismukes WT, Bottoms CA, Edger PP, Washburn JD, An H, Hall JC, McKain MR, Al‐Shehbaz I, Barker MS, Schranz ME, Conant GC, Pires JC. Phylogeny and multiple independent whole-genome duplication events in the Brassicales. Am J Bot 2020; 107:1148-1164. [PMID: 32830865 PMCID: PMC7496422 DOI: 10.1002/ajb2.1514] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/05/2020] [Indexed: 05/04/2023]
Abstract
PREMISE Whole-genome duplications (WGDs) are prevalent throughout the evolutionary history of plants. For example, dozens of WGDs have been phylogenetically localized across the order Brassicales, specifically, within the family Brassicaceae. A WGD event has also been identified in the Cleomaceae, the sister family to Brassicaceae, yet its placement, as well as that of WGDs in other families in the order, remains unclear. METHODS Phylo-transcriptomic data were generated and used to infer a nuclear phylogeny for 74 Brassicales taxa. Genome survey sequencing was also performed on 66 of those taxa to infer a chloroplast phylogeny. These phylogenies were used to assess and confirm relationships among the major families of the Brassicales and within Brassicaceae. Multiple WGD inference methods were then used to assess the placement of WGDs on the nuclear phylogeny. RESULTS Well-supported chloroplast and nuclear phylogenies for the Brassicales and the putative placement of the Cleomaceae-specific WGD event Th-ɑ are presented. This work also provides evidence for previously hypothesized WGDs, including a well-supported event shared by at least two members of the Resedaceae family, and a possible event within the Capparaceae. CONCLUSIONS Phylogenetics and the placement of WGDs within highly polyploid lineages continues to be a major challenge. This study adds to the conversation on WGD inference difficulties by demonstrating that sampling is especially important for WGD identification and phylogenetic placement. Given its economic importance and genomic resources, the Brassicales continues to be an ideal group for assessing WGD inference methods.
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Affiliation(s)
- Makenzie E. Mabry
- Division of Biological Sciences and Christopher S. Bond Life Sciences CenterUniversity of MissouriColumbiaMissouri65211USA
| | - Julia M. Brose
- Division of Biological Sciences and Christopher S. Bond Life Sciences CenterUniversity of MissouriColumbiaMissouri65211USA
| | - Paul D. Blischak
- Department of Ecology and Evolutionary BiologyUniversity of ArizonaTucsonArizona85719USA
| | - Brittany Sutherland
- Department of Ecology and Evolutionary BiologyUniversity of ArizonaTucsonArizona85719USA
| | - Wade T. Dismukes
- Division of Biological Sciences and Christopher S. Bond Life Sciences CenterUniversity of MissouriColumbiaMissouri65211USA
| | - Christopher A. Bottoms
- Informatics Research Core Facility and Christopher S. Bond Life Sciences CenterUniversity of MissouriColumbiaMissouri65211USA
| | - Patrick P. Edger
- Department of HorticultureMichigan State UniversityEast LansingMichigan48824USA
| | | | - Hong An
- Division of Biological Sciences and Christopher S. Bond Life Sciences CenterUniversity of MissouriColumbiaMissouri65211USA
| | - Jocelyn C. Hall
- Department of Biological SciencesUniversity of AlbertaEdmontonT6G 2E9Canada
| | - Michael R. McKain
- Department of Biological SciencesThe University of AlabamaTuscaloosaAlabama35401USA
| | | | - Michael S. Barker
- Department of Ecology and Evolutionary BiologyUniversity of ArizonaTucsonArizona85719USA
| | | | - Gavin C. Conant
- Bioinformatics Research CenterProgram in Genetics and Department of Biological SciencesNorth Carolina State UniversityRaleighNorth Carolina27695USA
| | - J. Chris Pires
- Division of Biological Sciences and Christopher S. Bond Life Sciences CenterUniversity of MissouriColumbiaMissouri65211USA
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34
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Ferrão LFV, Johnson TS, Benevenuto J, Edger PP, Colquhoun TA, Munoz PR. Genome-wide association of volatiles reveals candidate loci for blueberry flavor. New Phytol 2020; 226:1725-1737. [PMID: 31999829 DOI: 10.1111/nph.16459] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/21/2020] [Indexed: 05/20/2023]
Abstract
Plants produce a range of volatile organic compounds (VOCs), some of which are perceived by the human olfactory system, contributing to a myriad flavors. Despite the importance of flavor for consumer preference, most plant breeding programs have neglected it, mainly because of the costs of phenotyping and the complexity of disentangling the role of VOCs in human perception. To develop molecular breeding tools aimed at improving fruit flavor, we carried out target genotyping of and VOC extraction from a blueberry population. Metabolite genome-wide association analysis was used to elucidate the genetic architecture, while predictive models were tested to prove that VOCs can be accurately predicted using genomic information. A historical sensory panel was considered to assess how the volatiles influenced consumers. By gathering genomics, metabolomics, and the sensory panel, we demonstrated that VOCs are controlled by a few major genomic regions, some of which harbor biosynthetic enzyme-coding genes; can be accurately predicted using molecular markers; and can enhance or decrease consumers' overall liking. Here we emphasized how the understanding of the genetic basis and the role of VOCs in consumer preference can assist breeders in developing more flavorful cultivars at a more inexpensive and accelerated pace.
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Affiliation(s)
- Luís Felipe V Ferrão
- Blueberry Breeding and Genomics Lab, Horticultural Sciences Department, University of Florida, Gainesville, FL, 32611, USA
| | - Timothy S Johnson
- Environmental Horticulture Department, Plant Innovation Center, University of Florida, Gainesville, FL, 32611, USA
| | - Juliana Benevenuto
- Blueberry Breeding and Genomics Lab, Horticultural Sciences Department, University of Florida, Gainesville, FL, 32611, USA
| | - Patrick P Edger
- Department of Horticulture, University of Michigan, Michigan State University, East Lansing, MI, 48824, USA
| | - Thomas A Colquhoun
- Environmental Horticulture Department, Plant Innovation Center, University of Florida, Gainesville, FL, 32611, USA
| | - Patricio R Munoz
- Blueberry Breeding and Genomics Lab, Horticultural Sciences Department, University of Florida, Gainesville, FL, 32611, USA
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35
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Alger EI, Edger PP. One subgenome to rule them all: underlying mechanisms of subgenome dominance. Curr Opin Plant Biol 2020; 54:108-113. [PMID: 32344327 DOI: 10.1016/j.pbi.2020.03.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/05/2020] [Accepted: 03/04/2020] [Indexed: 06/11/2023]
Abstract
Allopolyploids, which are formed from the hybridization of two or more diploid progenitor species, often experience subgenome dominance, where one of the parental genomes (subgenomes) has higher levels of gene expression and ultimately greater gene retention compared to the other subgenomes. Low transposable element (TE) abundance near genes has been associated with the dominant subgenome in several allopolyploids, but TEs are unlikely to be the only causal factor responsible for subgenome expression dominance. In this review, we will examine the role of TEs in subgenome dominance as well as discuss how genetic incompatibilities among subgenomes likely contributes to the rapid emergence of subgenome dominance. Lastly, we highlight several burning questions about subgenome dominance that remain largely unanswered.
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Affiliation(s)
- Elizabeth I Alger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.
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36
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Whitaker VM, Knapp SJ, Hardigan MA, Edger PP, Slovin JP, Bassil NV, Hytönen T, Mackenzie KK, Lee S, Jung S, Main D, Barbey CR, Verma S. A roadmap for research in octoploid strawberry. Hortic Res 2020; 7:33. [PMID: 32194969 PMCID: PMC7072068 DOI: 10.1038/s41438-020-0252-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 01/26/2020] [Indexed: 05/02/2023]
Abstract
The cultivated strawberry (Fragaria × ananassa) is an allo-octoploid species, originating nearly 300 years ago from wild progenitors from the Americas. Since that time the strawberry has become the most widely cultivated fruit crop in the world, universally appealing due to its sensory qualities and health benefits. The recent publication of the first high-quality chromosome-scale octoploid strawberry genome (cv. Camarosa) is enabling rapid advances in genetics, stimulating scientific debate and provoking new research questions. In this forward-looking review we propose avenues of research toward new biological insights and applications to agriculture. Among these are the origins of the genome, characterization of genetic variants, and big data approaches to breeding. Key areas of research in molecular biology will include the control of flowering, fruit development, fruit quality, and plant-pathogen interactions. In order to realize this potential as a global community, investments in genome resources must be continually augmented.
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Affiliation(s)
- Vance M Whitaker
- 1University of Florida, Institute of Food and Agricultural Sciences, Gulf Coast Research and Education Center, Wimauma, Florida 33598 USA
| | - Steven J Knapp
- 2Department of Plant Sciences, University of California, Davis, CA 95616 USA
| | - Michael A Hardigan
- 2Department of Plant Sciences, University of California, Davis, CA 95616 USA
| | - Patrick P Edger
- 3Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Janet P Slovin
- USDA-ARS Genetic Improvement of Fruits and Vegetables Laboratory, Beltsville, MA 20705 USA
| | - Nahla V Bassil
- 5USDA-ARS National Clonal Germplasm Repository, Corvallis, OR 97333 USA
| | - Timo Hytönen
- 6Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, 00790 Finland
- 7Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, 00790 Finland
- NIAB EMR, Kent, ME19 6BJ UK
| | - Kathryn K Mackenzie
- 6Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, 00790 Finland
| | - Seonghee Lee
- 1University of Florida, Institute of Food and Agricultural Sciences, Gulf Coast Research and Education Center, Wimauma, Florida 33598 USA
| | - Sook Jung
- 9Department of Horticulture, Washington State University, Pullman, WA 99164 USA
| | - Dorrie Main
- 9Department of Horticulture, Washington State University, Pullman, WA 99164 USA
| | - Christopher R Barbey
- 1University of Florida, Institute of Food and Agricultural Sciences, Gulf Coast Research and Education Center, Wimauma, Florida 33598 USA
| | - Sujeet Verma
- 1University of Florida, Institute of Food and Agricultural Sciences, Gulf Coast Research and Education Center, Wimauma, Florida 33598 USA
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37
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Edger PP, McKain MR, Yocca AE, Knapp SJ, Qiao Q, Zhang T. Reply to: Revisiting the origin of octoploid strawberry. Nat Genet 2019; 52:5-7. [PMID: 31844320 PMCID: PMC6960091 DOI: 10.1038/s41588-019-0544-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 11/04/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA. .,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA.
| | - Michael R McKain
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Alan E Yocca
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Department of Plant Biology, Michigan State University, East Lansing, MI, USA
| | - Steven J Knapp
- Department of Plant Sciences, University of California-Davis, Davis, CA, USA
| | - Qin Qiao
- School of Agriculture, Yunnan University, Kunming, China.
| | - Ticao Zhang
- College of Chinese Material Medica, Yunnan University of Chinese Medicine, Kunming, China.
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38
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Colle M, Leisner CP, Wai CM, Ou S, Bird KA, Wang J, Wisecaver JH, Yocca AE, Alger EI, Tang H, Xiong Z, Callow P, Ben-Zvi G, Brodt A, Baruch K, Swale T, Shiue L, Song GQ, Childs KL, Schilmiller A, Vorsa N, Buell CR, VanBuren R, Jiang N, Edger PP. Haplotype-phased genome and evolution of phytonutrient pathways of tetraploid blueberry. Gigascience 2019; 8:5304886. [PMID: 30715294 PMCID: PMC6423372 DOI: 10.1093/gigascience/giz012] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 12/18/2018] [Accepted: 01/18/2019] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Highbush blueberry (Vaccinium corymbosum) has long been consumed for its unique flavor and composition of health-promoting phytonutrients. However, breeding efforts to improve fruit quality in blueberry have been greatly hampered by the lack of adequate genomic resources and a limited understanding of the underlying genetics encoding key traits. The genome of highbush blueberry has been particularly challenging to assemble due, in large part, to its polyploid nature and genome size. FINDINGS Here, we present a chromosome-scale and haplotype-phased genome assembly of the cultivar "Draper," which has the highest antioxidant levels among a diversity panel of 71 cultivars and 13 wild Vaccinium species. We leveraged this genome, combined with gene expression and metabolite data measured across fruit development, to identify candidate genes involved in the biosynthesis of important phytonutrients among other metabolites associated with superior fruit quality. Genome-wide analyses revealed that both polyploidy and tandem gene duplications modified various pathways involved in the biosynthesis of key phytonutrients. Furthermore, gene expression analyses hint at the presence of a spatial-temporal specific dominantly expressed subgenome including during fruit development. CONCLUSIONS These findings and the reference genome will serve as a valuable resource to guide future genome-enabled breeding of important agronomic traits in highbush blueberry.
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Affiliation(s)
- Marivi Colle
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA.,MSU AgBioResearch, Michigan State University, 446 West Circle Drive, East Lansing, MI, 48824, USA
| | - Courtney P Leisner
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824 USA
| | - Ching Man Wai
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA
| | - Shujun Ou
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, 293 Farm Lane, East Lansing, MI, 48824, USA
| | - Kevin A Bird
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, 293 Farm Lane, East Lansing, MI, 48824, USA
| | - Jie Wang
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824 USA.,Center for Genomics Enabled Plant Science, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA
| | - Jennifer H Wisecaver
- Department of Biochemistry, Purdue University, 175 South University Street, West Lafayette, IN, 47907, USA.,Purdue Center for Plant Biology, Purdue University, 610 Purdue Mall, West Lafayette, IN, 47907, USA
| | - Alan E Yocca
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA.,Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824 USA
| | - Elizabeth I Alger
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA
| | - Haibao Tang
- Human Longevity Inc., 4570 Executive Drive, San Diego, CA 92121, USA
| | - Zhiyong Xiong
- Key Laboratory of Herbage and Endemic Crop Biotechnology, School of Life Sciences, Inner Mongolia University, 221 Aimin Road, Hohhot, 010070, China
| | - Pete Callow
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA
| | - Gil Ben-Zvi
- NRGene, 5 Golda Meir Street, Ness Ziona, 7403648, Israel
| | - Avital Brodt
- NRGene, 5 Golda Meir Street, Ness Ziona, 7403648, Israel
| | - Kobi Baruch
- NRGene, 5 Golda Meir Street, Ness Ziona, 7403648, Israel
| | - Thomas Swale
- Dovetail Genomics, 100 Enterprise Way, Scotts Valley, CA, 95066, USA
| | - Lily Shiue
- Dovetail Genomics, 100 Enterprise Way, Scotts Valley, CA, 95066, USA
| | - Guo-Qing Song
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA
| | - Kevin L Childs
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824 USA.,Center for Genomics Enabled Plant Science, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA
| | - Anthony Schilmiller
- Mass Spectrometry & Metabolomics Core Facility, Michigan State University, 603 Wilson Road, East Lansing, MI, 48824, USA
| | - Nicholi Vorsa
- Department of Plant Biology, Rutgers University, 59 Dudley Road, New Brunswick, NJ, 08901, USA.,Philip E. Marucci Center for Blueberry and Cranberry Research and Extension, Rutgers University, 125A Lake Oswego Road, Chatsworth, NJ, 08019, USA
| | - C Robin Buell
- MSU AgBioResearch, Michigan State University, 446 West Circle Drive, East Lansing, MI, 48824, USA.,Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824 USA.,Plant Resilience Institute, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824 USA
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA.,Plant Resilience Institute, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824 USA
| | - Ning Jiang
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, 293 Farm Lane, East Lansing, MI, 48824, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI, 48824, USA.,MSU AgBioResearch, Michigan State University, 446 West Circle Drive, East Lansing, MI, 48824, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, 293 Farm Lane, East Lansing, MI, 48824, USA
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39
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Edger PP, Poorten TJ, VanBuren R, Hardigan MA, Colle M, McKain MR, Smith RD, Teresi SJ, Nelson ADL, Wai CM, Alger EI, Bird KA, Yocca AE, Pumplin N, Ou S, Ben-Zvi G, Brodt A, Baruch K, Swale T, Shiue L, Acharya CB, Cole GS, Mower JP, Childs KL, Jiang N, Lyons E, Freeling M, Puzey JR, Knapp SJ. Author Correction: Origin and evolution of the octoploid strawberry genome. Nat Genet 2019; 51:765. [PMID: 30842601 PMCID: PMC7608257 DOI: 10.1038/s41588-019-0380-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA. .,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA.
| | - Thomas J Poorten
- Department of Plant Sciences, University of California-Davis, Davis, CA, USA
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
| | - Michael A Hardigan
- Department of Plant Sciences, University of California-Davis, Davis, CA, USA
| | - Marivi Colle
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Michael R McKain
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Ronald D Smith
- Department of Biology, College of William and Mary, Williamsburg, VA, USA
| | - Scott J Teresi
- Department of Biology, College of William and Mary, Williamsburg, VA, USA
| | | | - Ching Man Wai
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Elizabeth I Alger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Kevin A Bird
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA
| | - Alan E Yocca
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Nathan Pumplin
- Department of Plant Sciences, University of California-Davis, Davis, CA, USA
| | - Shujun Ou
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA
| | | | | | | | | | | | - Charlotte B Acharya
- Department of Plant Sciences, University of California-Davis, Davis, CA, USA
| | - Glenn S Cole
- Department of Plant Sciences, University of California-Davis, Davis, CA, USA
| | - Jeffrey P Mower
- Center for Plant Science Innovation, University of Nebraska, Lincoln, NE, USA
| | - Kevin L Childs
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA.,Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, MI, USA
| | - Ning Jiang
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA
| | - Eric Lyons
- School of Plant Sciences, University of Arizona, Tucson, AZ, USA
| | - Michael Freeling
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Joshua R Puzey
- School of Plant Sciences, University of Arizona, Tucson, AZ, USA
| | - Steven J Knapp
- Department of Plant Sciences, University of California-Davis, Davis, CA, USA.
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40
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Edger PP, Poorten TJ, VanBuren R, Hardigan MA, Colle M, McKain MR, Smith RD, Teresi SJ, Nelson ADL, Wai CM, Alger EI, Bird KA, Yocca AE, Pumplin N, Ou S, Ben-Zvi G, Brodt A, Baruch K, Swale T, Shiue L, Acharya CB, Cole GS, Mower JP, Childs KL, Jiang N, Lyons E, Freeling M, Puzey JR, Knapp SJ. Origin and evolution of the octoploid strawberry genome. Nat Genet 2019; 51:541-547. [PMID: 30804557 PMCID: PMC6882729 DOI: 10.1038/s41588-019-0356-4] [Citation(s) in RCA: 301] [Impact Index Per Article: 60.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 01/15/2019] [Indexed: 01/19/2023]
Abstract
Cultivated strawberry emerged from the hybridization of two wild octoploid species, both descendants from the merger of four diploid progenitor species into a single nucleus more than 1 million years ago. Here we report a near-complete chromosome-scale assembly for cultivated octoploid strawberry (Fragaria × ananassa) and uncovered the origin and evolutionary processes that shaped this complex allopolyploid. We identified the extant relatives of each diploid progenitor species and provide support for the North American origin of octoploid strawberry. We examined the dynamics among the four subgenomes in octoploid strawberry and uncovered the presence of a single dominant subgenome with significantly greater gene content, gene expression abundance, and biased exchanges between homoeologous chromosomes, as compared with the other subgenomes. Pathway analysis showed that certain metabolomic and disease-resistance traits are largely controlled by the dominant subgenome. These findings and the reference genome should serve as a powerful platform for future evolutionary studies and enable molecular breeding in strawberry. Chromosome-scale assembly for the cultivated octoploid strawberry (Fragaria × ananassa) uncovers the origin and evolutionary processes that shaped this complex allopolyploid, providing a useful resource for genome-wide analyses and molecular breeding.
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Affiliation(s)
- Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA. .,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA.
| | - Thomas J Poorten
- Department of Plant Sciences, University of California-Davis, Davis, California, USA
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
| | - Michael A Hardigan
- Department of Plant Sciences, University of California-Davis, Davis, California, USA
| | - Marivi Colle
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Michael R McKain
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Ronald D Smith
- Department of Biology, College of William and Mary, Williamsburg, VA, USA
| | - Scott J Teresi
- Department of Biology, College of William and Mary, Williamsburg, VA, USA
| | | | - Ching Man Wai
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Elizabeth I Alger
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Kevin A Bird
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA
| | - Alan E Yocca
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
| | - Nathan Pumplin
- Department of Plant Sciences, University of California-Davis, Davis, California, USA
| | - Shujun Ou
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA
| | | | | | | | | | | | - Charlotte B Acharya
- Department of Plant Sciences, University of California-Davis, Davis, California, USA
| | - Glenn S Cole
- Department of Plant Sciences, University of California-Davis, Davis, California, USA
| | - Jeffrey P Mower
- Center for Plant Science Innovation, University of Nebraska, Lincoln, NE, USA
| | - Kevin L Childs
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA.,Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, MI, USA
| | - Ning Jiang
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.,Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, USA
| | - Eric Lyons
- School of Plant Sciences, University of Arizona, Tucson, AZ, USA
| | - Michael Freeling
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Joshua R Puzey
- Department of Biology, College of William and Mary, Williamsburg, VA, USA
| | - Steven J Knapp
- Department of Plant Sciences, University of California-Davis, Davis, California, USA.
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41
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Abstract
Many insect species have acquired the ability to redirect plant development to form unique organs called galls, which provide these insects with unique, enhanced food and protection from enemies and the elements. Many galls resemble flowers or fruits, suggesting that elements of reproductive development may be involved. We tested this hypothesis using RNA sequencing to quantify the transcriptional responses of wild grapevine (Vitis riparia) leaves to a galling parasite, phylloxera (Daktulosphaira vitifoliae). If development of reproductive structures is part of gall formation, we expected to find significantly elevated expression of genes involved in flower and/or fruit development in developing galls as opposed to ungalled leaves. We found that reproductive gene ontology categories were significantly enriched in developing galls, and that expression of many candidate genes involved in floral development were significantly increased, particularly in later gall stages. The patterns of gene expression found in galls suggest that phylloxera exploits vascular cambium to provide meristematic tissue and redirects leaf development towards formation of carpels. The phylloxera leaf gall appears to be phenotypically and transcriptionally similar to the carpel, due to the parasite hijacking underlying genetic machinery in the host plant.
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Affiliation(s)
- Jack C Schultz
- Division of Plant Sciences, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA.
- Department of Environmental Sciences, Bowman-Oddy Laboratories, University of Toledo, Toledo, OH, 43606, USA.
| | - Patrick P Edger
- Division of Plant Sciences, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA
- Department of Horticulture, Michigan State University and Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, 48824, USA
| | - Mélanie J A Body
- Division of Plant Sciences, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA
- Department of Environmental Sciences, Bowman-Oddy Laboratories, University of Toledo, Toledo, OH, 43606, USA
| | - Heidi M Appel
- Division of Plant Sciences, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA
- Department of Environmental Sciences, Bowman-Oddy Laboratories, University of Toledo, Toledo, OH, 43606, USA
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42
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Wilhelmsson PKI, Chandler JO, Fernandez-Pozo N, Graeber K, Ullrich KK, Arshad W, Khan S, Hofberger JA, Buchta K, Edger PP, Pires JC, Schranz ME, Leubner-Metzger G, Rensing SA. Usability of reference-free transcriptome assemblies for detection of differential expression: a case study on Aethionema arabicum dimorphic seeds. BMC Genomics 2019; 20:95. [PMID: 30700268 PMCID: PMC6354389 DOI: 10.1186/s12864-019-5452-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 01/14/2019] [Indexed: 12/31/2022] Open
Abstract
Background RNA-sequencing analysis is increasingly utilized to study gene expression in non-model organisms without sequenced genomes. Aethionema arabicum (Brassicaceae) exhibits seed dimorphism as a bet-hedging strategy – producing both a less dormant mucilaginous (M+) seed morph and a more dormant non-mucilaginous (NM) seed morph. Here, we compared de novo and reference-genome based transcriptome assemblies to investigate Ae. arabicum seed dimorphism and to evaluate the reference-free versus -dependent approach for identifying differentially expressed genes (DEGs). Results A de novo transcriptome assembly was generated using sequences from M+ and NM Ae. arabicum dry seed morphs. The transcripts of the de novo assembly contained 63.1% complete Benchmarking Universal Single-Copy Orthologs (BUSCO) compared to 90.9% for the transcripts of the reference genome. DEG detection used the strict consensus of three methods (DESeq2, edgeR and NOISeq). Only 37% of 1533 differentially expressed de novo assembled transcripts paired with 1876 genome-derived DEGs. Gene Ontology (GO) terms distinguished the seed morphs: the terms translation and nucleosome assembly were overrepresented in DEGs higher in abundance in M+ dry seeds, whereas terms related to mRNA processing and transcription were overrepresented in DEGs higher in abundance in NM dry seeds. DEGs amongst these GO terms included ribosomal proteins and histones (higher in M+), RNA polymerase II subunits and related transcription and elongation factors (higher in NM). Expression of the inferred DEGs and other genes associated with seed maturation (e.g. those encoding late embryogenesis abundant proteins and transcription factors regulating seed development and maturation such as ABI3, FUS3, LEC1 and WRI1 homologs) were put in context with Arabidopsis thaliana seed maturation and indicated that M+ seeds may desiccate and mature faster than NM. The 1901 transcriptomic DEG set GO-terms had almost 90% overlap with the 2191 genome-derived DEG GO-terms. Conclusions Whilst there was only modest overlap of DEGs identified in reference-free versus -dependent approaches, the resulting GO analysis was concordant in both approaches. The identified differences in dry seed transcriptomes suggest mechanisms underpinning previously identified contrasts between morphology and germination behaviour of M+ and NM seeds. Electronic supplementary material The online version of this article (10.1186/s12864-019-5452-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Per K I Wilhelmsson
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany
| | - Jake O Chandler
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Noe Fernandez-Pozo
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany
| | - Kai Graeber
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Kristian K Ullrich
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany.,Present Address: Max Planck Institute for Evolutionary Biology, August-Thienemann-Straße 2, 24306, Ploen, Germany
| | - Waheed Arshad
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Safina Khan
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Johannes A Hofberger
- Biosystematics Group, Wageningen University, Wageningen, 6708 PB, The Netherlands
| | - Karl Buchta
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48864, USA
| | - J Chris Pires
- Division of Biological Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - M Eric Schranz
- Biosystematics Group, Wageningen University, Wageningen, 6708 PB, The Netherlands
| | - Gerhard Leubner-Metzger
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK. .,Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 78371, Olomouc, Czech Republic.
| | - Stefan A Rensing
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany. .,BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg, Germany.
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43
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Wilhelmsson PKI, Chandler JO, Fernandez-Pozo N, Graeber K, Ullrich KK, Arshad W, Khan S, Hofberger JA, Buchta K, Edger PP, Pires JC, Schranz ME, Leubner-Metzger G, Rensing SA. Usability of reference-free transcriptome assemblies for detection of differential expression: a case study on Aethionema arabicum dimorphic seeds. BMC Genomics 2019. [PMID: 30700268 DOI: 10.1186/s12864-019-5452-5454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND RNA-sequencing analysis is increasingly utilized to study gene expression in non-model organisms without sequenced genomes. Aethionema arabicum (Brassicaceae) exhibits seed dimorphism as a bet-hedging strategy - producing both a less dormant mucilaginous (M+) seed morph and a more dormant non-mucilaginous (NM) seed morph. Here, we compared de novo and reference-genome based transcriptome assemblies to investigate Ae. arabicum seed dimorphism and to evaluate the reference-free versus -dependent approach for identifying differentially expressed genes (DEGs). RESULTS A de novo transcriptome assembly was generated using sequences from M+ and NM Ae. arabicum dry seed morphs. The transcripts of the de novo assembly contained 63.1% complete Benchmarking Universal Single-Copy Orthologs (BUSCO) compared to 90.9% for the transcripts of the reference genome. DEG detection used the strict consensus of three methods (DESeq2, edgeR and NOISeq). Only 37% of 1533 differentially expressed de novo assembled transcripts paired with 1876 genome-derived DEGs. Gene Ontology (GO) terms distinguished the seed morphs: the terms translation and nucleosome assembly were overrepresented in DEGs higher in abundance in M+ dry seeds, whereas terms related to mRNA processing and transcription were overrepresented in DEGs higher in abundance in NM dry seeds. DEGs amongst these GO terms included ribosomal proteins and histones (higher in M+), RNA polymerase II subunits and related transcription and elongation factors (higher in NM). Expression of the inferred DEGs and other genes associated with seed maturation (e.g. those encoding late embryogenesis abundant proteins and transcription factors regulating seed development and maturation such as ABI3, FUS3, LEC1 and WRI1 homologs) were put in context with Arabidopsis thaliana seed maturation and indicated that M+ seeds may desiccate and mature faster than NM. The 1901 transcriptomic DEG set GO-terms had almost 90% overlap with the 2191 genome-derived DEG GO-terms. CONCLUSIONS Whilst there was only modest overlap of DEGs identified in reference-free versus -dependent approaches, the resulting GO analysis was concordant in both approaches. The identified differences in dry seed transcriptomes suggest mechanisms underpinning previously identified contrasts between morphology and germination behaviour of M+ and NM seeds.
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Affiliation(s)
- Per K I Wilhelmsson
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany
| | - Jake O Chandler
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Noe Fernandez-Pozo
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany
| | - Kai Graeber
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Kristian K Ullrich
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany
- Present Address: Max Planck Institute for Evolutionary Biology, August-Thienemann-Straße 2, 24306, Ploen, Germany
| | - Waheed Arshad
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Safina Khan
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Johannes A Hofberger
- Biosystematics Group, Wageningen University, Wageningen, 6708 PB, The Netherlands
| | - Karl Buchta
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48864, USA
| | - J Chris Pires
- Division of Biological Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - M Eric Schranz
- Biosystematics Group, Wageningen University, Wageningen, 6708 PB, The Netherlands
| | - Gerhard Leubner-Metzger
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK.
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 78371, Olomouc, Czech Republic.
| | - Stefan A Rensing
- Plant Cell Biology, Faculty of Biology, University of Marburg, 35043, Marburg, Germany.
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg, Germany.
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44
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Lin T, Walworth A, Zong X, Danial GH, Tomaszewski EM, Callow P, Han X, Irina Zaharia L, Edger PP, Zhong GY, Song GQ. VcRR2 regulates chilling-mediated flowering through expression of hormone genes in a transgenic blueberry mutant. Hortic Res 2019; 6:96. [PMID: 31645954 PMCID: PMC6804727 DOI: 10.1038/s41438-019-0180-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/05/2019] [Accepted: 07/10/2019] [Indexed: 05/18/2023]
Abstract
The molecular mechanism underlying dormancy release and the induction of flowering remains poorly understood in woody plants. Mu-legacy is a valuable blueberry mutant, in which a transgene insertion caused increased expression of a RESPONSE REGULATOR 2-like gene (VcRR2). Mu-legacy plants, compared with nontransgenic 'Legacy' plants, show dwarfing, promotion of flower bud formation, and can flower under nonchilling conditions. We conducted transcriptomic comparisons in leaves, chilled and nonchilled flowering buds, and late-pink buds, and analyzed a total of 41 metabolites of six groups of hormones in leaf tissues of both Mu-legacy and 'Legacy' plants. These analyses uncovered that increased VcRR2 expression promotes the expression of a homolog of Arabidopsis thaliana ENT-COPALYL DIPHOSPHATE SYNTHETASE 1 (VcGA1), which induces new homeostasis of hormones, including increased gibberellin 4 (GA4) levels in Mu-legacy leaves. Consequently, increased expression of VcRR2 and VcGA1, which function in cytokinin responses and gibberellin synthesis, respectively, initiated the reduction in plant height and the enhancement of flower bud formation of the Mu-legacy plants through interactions of multiple approaches. In nonchilled flower buds, 29 differentially expressed transcripts of 17 genes of five groups of hormones were identified in transcriptome comparisons between Mu-legacy and 'Legacy' plants, of which 22 were chilling responsive. Thus, these analyses suggest that increased expression of VcRR2 was collectively responsible for promoting flower bud formation in highbush blueberry under nonchilling conditions. We report here for the first time the importance of VcRR2 to induce a suite of downstream hormones that promote flowering in woody plants.
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Affiliation(s)
- Tianyi Lin
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Aaron Walworth
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Xiaojuan Zong
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Gharbia H. Danial
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Elise M. Tomaszewski
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Pete Callow
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Xiumei Han
- Aquatic and Crop Resource Development, National Research Council of Canada, Saskatoon, SK S7N 0W9 Canada
| | - L. Irina Zaharia
- Aquatic and Crop Resource Development, National Research Council of Canada, Saskatoon, SK S7N 0W9 Canada
| | - Patrick P. Edger
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
| | - Gan-yuan Zhong
- Grape Genetics Research Unit, USDA-ARS, Geneva, NY 14456 USA
| | - Guo-qing Song
- Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
- Department of Horticulture, Michigan State University, East Lansing, MI 48824 USA
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45
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Hardigan MA, Feldmann MJ, Lorant A, Bird KA, Famula R, Acharya C, Cole G, Edger PP, Knapp SJ. Genome Synteny Has Been Conserved Among the Octoploid Progenitors of Cultivated Strawberry Over Millions of Years of Evolution. Front Plant Sci 2019; 10:1789. [PMID: 32158449 PMCID: PMC7020885 DOI: 10.3389/fpls.2019.01789] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 12/20/2019] [Indexed: 05/18/2023]
Abstract
Allo-octoploid cultivated strawberry (Fragaria × ananassa) originated through a combination of polyploid and homoploid hybridization, domestication of an interspecific hybrid lineage, and continued admixture of wild species over the last 300 years. While genes appear to flow freely between the octoploid progenitors, the genome structures and diversity of the octoploid species remain poorly understood. The complexity and absence of an octoploid genome frustrated early efforts to study chromosome evolution, resolve subgenomic structure, and develop a single coherent linkage group nomenclature. Here, we show that octoploid Fragaria species harbor millions of subgenome-specific DNA variants. Their diversity was sufficient to distinguish duplicated (homoeologous and paralogous) DNA sequences and develop 50K and 850K SNP genotyping arrays populated with co-dominant, disomic SNP markers distributed throughout the octoploid genome. Whole-genome shotgun genotyping of an interspecific segregating population yielded 1.9M genetically mapped subgenome variants in 5,521 haploblocks spanning 3,394 cM in F. chiloensis subsp. lucida, and 1.6M genetically mapped subgenome variants in 3,179 haploblocks spanning 2,017 cM in F. × ananassa. These studies provide a dense genomic framework of subgenome-specific DNA markers for seamlessly cross-referencing genetic and physical mapping information and unifying existing chromosome nomenclatures. Using comparative genomics, we show that geographically diverse wild octoploids are effectively diploidized, nearly completely collinear, and retain strong macro-synteny with diploid progenitor species. The preservation of genome structure among allo-octoploid taxa is a critical factor in the unique history of garden strawberry, where unimpeded gene flow supported its origin and domestication through repeated cycles of interspecific hybridization.
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Affiliation(s)
- Michael A. Hardigan
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Mitchell J. Feldmann
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Anne Lorant
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Kevin A. Bird
- Department of Horticulture, Michigan State University, East Lansing, MI, United States
| | - Randi Famula
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Charlotte Acharya
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Glenn Cole
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
| | - Patrick P. Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, United States
| | - Steven J. Knapp
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
- *Correspondence: Steven J. Knapp,
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46
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Edger PP, VanBuren R, Colle M, Poorten TJ, Wai CM, Niederhuth CE, Alger EI, Ou S, Acharya CB, Wang J, Callow P, McKain MR, Shi J, Collier C, Xiong Z, Mower JP, Slovin JP, Hytönen T, Jiang N, Childs KL, Knapp SJ. Single-molecule sequencing and optical mapping yields an improved genome of woodland strawberry (Fragaria vesca) with chromosome-scale contiguity. Gigascience 2018; 7:1-7. [PMID: 29253147 PMCID: PMC5801600 DOI: 10.1093/gigascience/gix124] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 11/30/2017] [Indexed: 12/18/2022] Open
Abstract
Background Although draft genomes are available for most agronomically important plant species, the majority are incomplete, highly fragmented, and often riddled with assembly and scaffolding errors. These assembly issues hinder advances in tool development for functional genomics and systems biology. Findings Here we utilized a robust, cost-effective approach to produce high-quality reference genomes. We report a near-complete genome of diploid woodland strawberry (Fragaria vesca) using single-molecule real-time sequencing from Pacific Biosciences (PacBio). This assembly has a contig N50 length of ∼7.9 million base pairs (Mb), representing a ∼300-fold improvement of the previous version. The vast majority (>99.8%) of the assembly was anchored to 7 pseudomolecules using 2 sets of optical maps from Bionano Genomics. We obtained ∼24.96 Mb of sequence not present in the previous version of the F. vesca genome and produced an improved annotation that includes 1496 new genes. Comparative syntenic analyses uncovered numerous, large-scale scaffolding errors present in each chromosome in the previously published version of the F. vesca genome. Conclusions Our results highlight the need to improve existing short-read based reference genomes. Furthermore, we demonstrate how genome quality impacts commonly used analyses for addressing both fundamental and applied biological questions.
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Affiliation(s)
- Patrick P Edger
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823.,Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Robert VanBuren
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Marivi Colle
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Thomas J Poorten
- Department of Plant Sciences, University of California - Davis, Davis, California, 95616
| | - Ching Man Wai
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Chad E Niederhuth
- Department of Genetics, University of Georgia, Athens, Georgia, 30602
| | - Elizabeth I Alger
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Shujun Ou
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823.,Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Charlotte B Acharya
- Department of Plant Sciences, University of California - Davis, Davis, California, 95616
| | - Jie Wang
- Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Pete Callow
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Michael R McKain
- Donald Danforth Plant Science Center, St. Louis, Missouri, 63132
| | - Jinghua Shi
- Bionano Genomics, San Diego, California, 92121
| | | | - Zhiyong Xiong
- Potato Engineering and Technology Research Center, Inner Mongolia University, Hohhot, 010021, China
| | - Jeffrey P Mower
- Center for Plant Science Innovation, University of Nebraska, Lincoln, Nebraska, 68588
| | - Janet P Slovin
- USDA/ARS, Genetic Improvement of Fruits and Vegetables Laboratory, Beltsville, Maryland, 20705
| | - Timo Hytönen
- Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Finland
| | - Ning Jiang
- Department of Horticulture, Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823.,Ecology, Evolutionary Biology, and Behavior, Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Kevin L Childs
- Department of Plant Biology, and Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823.,Center for Genomics Enabled Plant Science, Michigan State University, East Lansing, Michigan, 48823
| | - Steven J Knapp
- Department of Plant Sciences, University of California - Davis, Davis, California, 95616
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47
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Hardigan MA, Poorten TJ, Acharya CB, Cole GS, Hummer KE, Bassil N, Edger PP, Knapp SJ. Domestication of Temperate and Coastal Hybrids with Distinct Ancestral Gene Selection in Octoploid Strawberry. Plant Genome 2018; 11:180049. [PMID: 30512037 DOI: 10.3835/plantgenome2018.07.0049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Garden strawberry ( × Duchesne ex Rozier) arose from spontaneous hybridization of distinct octoploid species 300 yr ago. Since its discovery in the 1700s, migration and selection restructured the genetic diversity of early hybrids to produce elite fruit-bearing groups. Breeders' understanding of the genetic architecture of domesticated populations is incomplete. To resolve the impacts of domestication on strawberry genetic diversity, we analyzed genome-wide DNA profiles of 1300 octoploid individuals (1814-present), including wild species, historic varieties, and the University of California germplasm collection. Commercially important California genotypes, adapted to mild coastal climates and accounting for a large fraction of global production, have diverged from temperate cultivars originating in eastern North America and Europe. Whereas temperate cultivars were shown to have selected North American Miller ssp. ancestral diversity at higher frequencies, coastal breeding increased selection of (L.) Miller (beach strawberry) alleles in . × , in addition to photoperiod-insensitive flowering alleles from nonancestral (S.Watson) Staudt ssp. , underscoring the role of continued adaptive introgressions in the domestication of artificial hybrids. Selection for mass production traits in coastal climates over the last 20 to 30 yr has restructured domesticated strawberry diversity on a scale similar to the first 200 yr of breeding; coastal × has diverged further from temperate × than the latter from their wild progenitors. Selection signatures indicate that strawberry domestication targeted genes regulating hormone-mediated fruit expansion, providing a blueprint for genetic factors underlying elite phenotypes.
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Hao Y, Washburn JD, Rosenthal J, Nielsen B, Lyons E, Edger PP, Pires JC, Conant GC. Patterns of Population Variation in Two Paleopolyploid Eudicot Lineages Suggest That Dosage-Based Selection on Homeologs Is Long-Lived. Genome Biol Evol 2018; 10:999-1011. [PMID: 29617811 PMCID: PMC5887293 DOI: 10.1093/gbe/evy061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2018] [Indexed: 11/21/2022] Open
Abstract
Genes that are inherently subject to strong selective constraints tend to be overretained in duplicate after polyploidy. They also continue to experience similar, but somewhat relaxed, constraints after that polyploidy event. We sought to assess for how long the influence of polyploidy is felt on these genes’ selective pressures. We analyzed two nested polyploidy events in Brassicaceae: the At-α genome duplication that is the most recent polyploidy in the model plant Arabidopsis thaliana and a more recent hexaploidy shared by the genus Brassica and its relatives. By comparing the strength and direction of the natural selection acting at the population and at the species level, we find evidence for continued intensified purifying selection acting on retained duplicates from both polyploidies even down to the present. The constraint observed in preferentially retained genes is not a result of the polyploidy event: the orthologs of such genes experience even stronger constraint in nonpolyploid outgroup genomes. In both the Arabidopsis and Brassica lineages, we further find evidence for segregating mildly deleterious variants, confirming that the population-level data uncover patterns not visible with between-species comparisons. Using the A. thaliana metabolic network, we also explored whether network position was correlated with the measured selective constraint. At both the population and species level, nodes/genes tended to show similar constraints to their neighbors. Our results paint a picture of the long-lived effects of polyploidy on plant genomes, suggesting that even yesterday’s polyploids still have distinct evolutionary trajectories.
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Affiliation(s)
- Yue Hao
- Bioinformatics Research Center, North Carolina State University
| | | | | | - Brandon Nielsen
- Department of Biology and Geosciences, Clarion University of Pennsylvania
| | - Eric Lyons
- School of Plant Sciences, University of Arizona
| | - Patrick P Edger
- Department of Horticulture, Michigan State University.,Ecology, Evolutionary Biology and Behavior Program, Michigan State University
| | - J Chris Pires
- Division of Biological Sciences, University of Missouri- Columbia.,Informatics Institute, University of Missouri- Columbia
| | - Gavin C Conant
- Bioinformatics Research Center, North Carolina State University.,Informatics Institute, University of Missouri- Columbia.,Division of Animal Sciences, University of Missouri- Columbia.,Program in Genetics, North Carolina State University.,Department of Biological Sciences, North Carolina State University
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49
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Bird KA, VanBuren R, Puzey JR, Edger PP. The causes and consequences of subgenome dominance in hybrids and recent polyploids. New Phytol 2018; 220:87-93. [PMID: 29882360 DOI: 10.1111/nph.15256] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 05/02/2018] [Indexed: 05/22/2023]
Abstract
Contents Summary 87 I. Introduction 87 II. Evolution in action: subgenome dominance within newly formed hybrids and polyploids 88 III. Summary and future directions 90 Acknowledgements 92 References 92 SUMMARY: The merger of divergent genomes, via hybridization or allopolyploidization, frequently results in a 'genomic shock' that induces a series of rapid genetic and epigenetic modifications as a result of conflicts between parental genomes. This conflict among the subgenomes routinely leads one subgenome to become dominant over the other subgenome(s), resulting in subgenome biases in gene content and expression. Recent advances in methods to analyze hybrid and polyploid genomes with comparisons to extant parental progenitors have allowed for major strides in understanding the mechanistic basis for subgenome dominance. In particular, our understanding of the role that homoeologous exchange might play in subgenome dominance and genome evolution is quickly growing. Here we describe recent discoveries uncovering the underlying mechanisms and provide a framework to predict subgenome dominance in hybrids and allopolyploids with far-reaching implications for agricultural, ecological, and evolutionary research.
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Affiliation(s)
- Kevin A Bird
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, 48824, USA
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, 48824, USA
| | - Joshua R Puzey
- Department of Biology, College of William and Mary, Williamsburg, VA, 23185, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Ecology, Evolutionary Biology and Behavior, Michigan State University, East Lansing, MI, 48824, USA
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50
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VanBuren R, Wai CM, Colle M, Wang J, Sullivan S, Bushakra JM, Liachko I, Vining KJ, Dossett M, Finn CE, Jibran R, Chagné D, Childs K, Edger PP, Mockler TC, Bassil NV. A near complete, chromosome-scale assembly of the black raspberry (Rubus occidentalis) genome. Gigascience 2018; 7:5069394. [PMID: 30107523 PMCID: PMC6131213 DOI: 10.1093/gigascience/giy094] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 07/10/2018] [Indexed: 11/13/2022] Open
Abstract
Background The fragmented nature of most draft plant genomes has hindered downstream gene discovery, trait mapping for breeding, and other functional genomics applications. There is a pressing need to improve or finish draft plant genome assemblies. Findings Here, we present a chromosome-scale assembly of the black raspberry genome using single-molecule real-time Pacific Biosciences sequencing and high-throughput chromatin conformation capture (Hi-C) genome scaffolding. The updated V3 assembly has a contig N50 of 5.1 Mb, representing an ∼200-fold improvement over the previous Illumina-based version. Each of the 235 contigs was anchored and oriented into seven chromosomes, correcting several major misassemblies. Black raspberry V3 contains 47 Mb of new sequences including large pericentromeric regions and thousands of previously unannotated protein-coding genes. Among the new genes are hundreds of expanded tandem gene arrays that were collapsed in the Illumina-based assembly. Detailed comparative genomics with the high-quality V4 woodland strawberry genome (Fragaria vesca) revealed near-perfect 1:1 synteny with dramatic divergence in tandem gene array composition. Lineage-specific tandem gene arrays in black raspberry are related to agronomic traits such as disease resistance and secondary metabolite biosynthesis. Conclusions The improved resolution of tandem gene arrays highlights the need to reassemble these highly complex and biologically important regions in draft plant genomes. The updated, high-quality black raspberry reference genome will be useful for comparative genomics across the horticulturally important Rosaceae family and enable the development of marker assisted breeding in Rubus.
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Affiliation(s)
- Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA.,Plant Resilience Institute, Michigan State University, East Lansing, MI, 48824, USA
| | - Ching Man Wai
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | - Marivi Colle
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | - Jie Wang
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | | | - Jill M Bushakra
- USDA-ARS National Clonal Germplasm Repository, 33447 Peoria Rd., Corvallis, OR, 97333, USA
| | | | - Kelly J Vining
- Blueberry Council (in Partnership with Agriculture and Agri-Food Canada) Agassiz Food Research Centre, BC V0M 1A0, Canada
| | - Michael Dossett
- Blueberry Council (in Partnership with Agriculture and Agri-Food Canada) Agassiz Food Research Centre, BC V0M 1A0, Canada
| | - Chad E Finn
- USDA-ARS Horticultural Crops Research Unit, Corvallis, OR 97330, USA
| | - Rubina Jibran
- The New Zealand Institute for Plant & Food Research Limited, Private Bag 11600, Palmerston North 4474, New Zealand
| | - David Chagné
- The New Zealand Institute for Plant & Food Research Limited, Private Bag 11600, Palmerston North 4474, New Zealand
| | - Kevin Childs
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | - Todd C Mockler
- The Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
| | - Nahla V Bassil
- USDA-ARS National Clonal Germplasm Repository, 33447 Peoria Rd., Corvallis, OR, 97333, USA
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