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Bektas H, Hohn CE, Lukaszewski AJ, Waines JG. On the Possible Trade-Off between Shoot and Root Biomass in Wheat. PLANTS (BASEL, SWITZERLAND) 2023; 12:2513. [PMID: 37447071 DOI: 10.3390/plants12132513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/22/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023]
Abstract
Numerous studies have shown that under a limited water supply, a larger root biomass is associated with an increased above-ground biomass. Root biomass, while genetically controlled, is also greatly affected by the environment with varying plasticity levels. In this context, understanding the relationship between the biomass of shoots and roots appears prudent. In this study, we analyze this relationship in a large dataset collected from multiple experiments conducted up to different growth stages in bread wheat (Triticum aestivum L.) and its wild relatives. Four bread wheat mapping populations as well as wild and domesticated members of the Triticeae tribe were evaluated for the root and shoot biomass allocation patterns. In the analyzed dataset the root and shoot biomasses were directly related to each other, and to the heading date, and the correlation values increased in proportion to the length of an experiment. On average, 84.1% of the observed variation was explained by a positive correlation between shoot and root biomass. Scatter plots generated from 6353 data points from numerous experiments with different wheats suggest that at some point, further increases in root biomass negatively impact the shoot biomass. Based on these results, a preliminary study with different water availability scenarios and growth conditions was designed with two cultivars, Pavon 76 and Yecora Rojo. The duration of drought and water level significantly affected the root/shoot biomass allocation patterns. However, the responses of the two cultivars were quite different, suggesting that the point of diminishing returns in increasing root biomass may be different for different wheats, reinforcing the need to breed wheats for specific environmental challenges.
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Affiliation(s)
- Harun Bektas
- Department of Agricultural Biotechnology, Siirt University, Siirt 56100, Turkey
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Christopher E Hohn
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Adam J Lukaszewski
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - John Giles Waines
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
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Halder T, Liu H, Chen Y, Yan G, Siddique KHM. Chromosome groups 5, 6 and 7 harbor major quantitative trait loci controlling root traits in bread wheat ( Triticum aestivum L.). FRONTIERS IN PLANT SCIENCE 2023; 14:1092992. [PMID: 37021301 PMCID: PMC10067626 DOI: 10.3389/fpls.2023.1092992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Identifying genomic regions for root traits in bread wheat can help breeders develop climate-resilient and high-yielding wheat varieties with desirable root traits. This study used the recombinant inbred line (RIL) population of Synthetic W7984 × Opata M85 to identify quantitative trait loci (QTL) for different root traits such as rooting depth (RD), root dry mass (RM), total root length (RL), root diameter (Rdia) and root surface areas (RSA1 for coarse roots and RSA2 for fine roots) under controlled conditions in a semi-hydroponic system. We detected 14 QTL for eight root traits on nine wheat chromosomes; we discovered three QTL each for RD and RSA1, two QTL each for RM and RSA2, and one QTL each for RL, Rdia, specific root length and nodal root number per plant. The detected QTL were concentrated on chromosome groups 5, 6 and 7. The QTL for shallow RD (Q.rd.uwa.7BL: Xbarc50) and high RM (Q.rm.uwa.6AS: Xgwm334) were validated in two independent F2 populations of Synthetic W7984 × Chara and Opata M85 × Cascade, respectively. Genotypes containing negative alleles for Q.rd.uwa.7BL had 52% shallower RD than other Synthetic W7984 × Chara population lines. Genotypes with the positive alleles for Q.rm.uwa.6AS had 31.58% higher RM than other Opata M85 × Cascade population lines. Further, we identified 21 putative candidate genes for RD (Q.rd.uwa.7BL) and 13 for RM (Q.rm.uwa.6AS); TraesCS6A01G020400, TraesCS6A01G024400 and TraesCS6A01G021000 identified from Q.rm.uwa.6AS, and TraesCS7B01G404000, TraesCS7B01G254900 and TraesCS7B01G446200 identified from Q.rd.uwa.7BL encoded important proteins for root traits. We found germin-like protein encoding genes in both Q.rd.uwa.7BL and Q.rm.uwa.6AS regions. These genes may play an important role in RM and RD improvement. The identified QTL, especially the validated QTL and putative candidate genes are valuable genetic resources for future root trait improvement in wheat.
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Affiliation(s)
- Tanushree Halder
- UWA School of Agriculture and Environment, The University of Western Australia, Crawley, WA, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Crawley, WA, Australia
- Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Hui Liu
- UWA School of Agriculture and Environment, The University of Western Australia, Crawley, WA, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Crawley, WA, Australia
| | - Yinglong Chen
- UWA School of Agriculture and Environment, The University of Western Australia, Crawley, WA, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Crawley, WA, Australia
| | - Guijun Yan
- UWA School of Agriculture and Environment, The University of Western Australia, Crawley, WA, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Crawley, WA, Australia
| | - Kadambot H. M. Siddique
- UWA School of Agriculture and Environment, The University of Western Australia, Crawley, WA, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Crawley, WA, Australia
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Guo X, Huang Y, Wang J, Fu S, Wang C, Wang M, Zhou C, Hu X, Wang T, Yang W, Han F. Development and cytological characterization of wheat- Thinopyrum intermedium translocation lines with novel stripe rust resistance gene. FRONTIERS IN PLANT SCIENCE 2023; 14:1135321. [PMID: 36909435 PMCID: PMC9998693 DOI: 10.3389/fpls.2023.1135321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Wheat stripe rust is a destructive disease in many cool and temperate regions around the world. Exploiting novel sources of resistance can provide wheat cultivars with robust and durable resistance to stripe rust. The wheat-Thinopyrum intermedium addition line TAI-14 was proven to carry a stripe rust resistance gene (named as YrT14) on the alien Th. intermedium chromosome. In order to transfer the resistance gene to wheat, wheat-Th. intermedium translocation lines were created by irradiating the pollen of the line TAI-14. We totally obtained 153 wheat-Th. intermedium translocation lines, among which the long alien segmental translocation line Zhongke 78 and the intercalary translocation line Zhongke 15 not only showed good integrated agronomic traits but also were identified as highly resistant to stripe rust in both seedling and adult plant stages. The alien chromatin in Zhongke 15 was identified as an insertion into the satellite of chromosome 6B, a type of translocation never reported before in chromosome engineering. By screening Simple Sequence Repeat (SSR) and Expressed Sequence Tag (EST) markers as well as the markers developed from RNA-sequencing (RNA-Seq) data, 14 markers were identified specific for the alien chromosome and a physical map was constructed. Both Zhongke 78 and Zhongke 15 could be used as a novel source of stripe rust resistance for wheat breeding, and the linked marker T14K50 can be used for molecular marker-assisted breeding. Finally, based on the karyotype, reaction to stripe rust, and genome resequencing data of different wheat-Th. intermedium translocation lines, the stripe rust resistance gene YrT14 was located to an 88.1 Mb interval from 636.7 to 724.8 Mb on Th. intermedium chromosome 19 corresponding to 7J or 7Js.
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Affiliation(s)
- Xianrui Guo
- Laboratory of Plant Chromosome Biology and Genomic Breeding, School of Life Sciences, Linyi University, Linyi, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Yuhong Huang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Jing Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Shulan Fu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Chunhui Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Mian Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Chen Zhou
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Xiaojun Hu
- Laboratory of Plant Chromosome Biology and Genomic Breeding, School of Life Sciences, Linyi University, Linyi, China
| | - Tao Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Wuyun Yang
- Crop Research Institute, Sichuan Academy of Agricultural Science, Chengdu, China
| | - Fangpu Han
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
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Kuzmanović L, Giovenali G, Ruggeri R, Rossini F, Ceoloni C. Small "Nested" Introgressions from Wild Thinopyrum Species, Conferring Effective Resistance to Fusarium Diseases, Positively Impact Durum Wheat Yield Potential. PLANTS (BASEL, SWITZERLAND) 2021; 10:579. [PMID: 33808545 PMCID: PMC8003120 DOI: 10.3390/plants10030579] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 11/16/2022]
Abstract
Today wheat cultivation is facing rapidly changing climate scenarios and yield instability, aggravated by the spreading of severe diseases such as Fusarium head blight (FHB) and Fusarium crown rot (FCR). To obtain productive genotypes resilient to stress pressure, smart breeding approaches must be envisaged, including the exploitation of wild relatives. Here we report on the assessment of the breeding potential of six durum wheat-Thinopyrum spp. recombinant lines (RLs) obtained through chromosome engineering. They are characterized by having 23% or 28% of their 7AL chromosome arm replaced by a "nested" alien segment, composed of homoeologous group 7 chromosome fractions from Th. ponticum and Th. elongatum (=7el1L + 7EL) or from different Th. ponticum accessions (=7el1L + 7el2L). In addition to the 7el1L genes Lr19 + Yp (leaf rust resistance, and yellow pigment content, respectively), these recombinant lines (RLs) possess a highly effective QTL for resistance to FHB and FCR within their 7el2L or 7EL portion. The RLs, their null segregants and well-adapted and productive durum wheat cultivars were evaluated for 16 yield-related traits over two seasons under rainfed and irrigated conditions. The absence of yield penalties and excellent genetic stability of RLs was revealed in the presence of all the alien segment combinations. Both 7el2L and 7EL stacked introgressions had positive impacts on source and sink yield traits, as well as on the overall performance of RLs in conditions of reduced water availability. The four "nested" RLs tested in 2020 were among the top five yielders, overall representing good candidates to be employed in breeding programs to enhance crop security and safety.
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Affiliation(s)
- Ljiljana Kuzmanović
- Department of Agriculture and Forestry Science, University of Tuscia, 01100 Viterbo, Italy; (G.G.); (R.R.); (F.R.); (C.C.)
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Siddiqui MN, Léon J, Naz AA, Ballvora A. Genetics and genomics of root system variation in adaptation to drought stress in cereal crops. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:1007-1019. [PMID: 33096558 PMCID: PMC7904151 DOI: 10.1093/jxb/eraa487] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 10/19/2020] [Indexed: 05/03/2023]
Abstract
Cereals are important crops worldwide that help meet food demands and nutritional needs. In recent years, cereal production has been challenged globally by frequent droughts and hot spells. A plant's root is the most relevant organ for the plant adaptation to stress conditions, playing pivotal roles in anchorage and the acquisition of soil-based resources. Thus, dissecting root system variations and trait selection for enhancing yield and sustainability under drought stress conditions should aid in future global food security. This review highlights the variations in root system attributes and their interplay with shoot architecture features to face water scarcity and maintain thus yield of major cereal crops. Further, we compile the root-related drought responsive quantitative trait loci/genes in cereal crops including their interspecies relationships using microsynteny to facilitate comparative genomic analyses. We then discuss the potential of an integrated strategy combining genomics and phenomics at genetic and epigenetic levels to explore natural genetic diversity as a basis for knowledge-based genome editing. Finally, we present an outline to establish innovative breeding leads for the rapid and optimized selection of root traits necessary to develop resilient crop varieties.
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Affiliation(s)
- Md Nurealam Siddiqui
- Institute of Crop Science and Resource Conservation (INRES) – Plant Breeding and Biotechnology, University of Bonn, Bonn, Germany
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Jens Léon
- Institute of Crop Science and Resource Conservation (INRES) – Plant Breeding and Biotechnology, University of Bonn, Bonn, Germany
| | - Ali A Naz
- Institute of Crop Science and Resource Conservation (INRES) – Plant Breeding and Biotechnology, University of Bonn, Bonn, Germany
| | - Agim Ballvora
- Institute of Crop Science and Resource Conservation (INRES) – Plant Breeding and Biotechnology, University of Bonn, Bonn, Germany
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Islam S, Zhang J, Zhao Y, She M, Ma W. Genetic regulation of the traits contributing to wheat nitrogen use efficiency. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 303:110759. [PMID: 33487345 DOI: 10.1016/j.plantsci.2020.110759] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/14/2020] [Accepted: 11/11/2020] [Indexed: 05/25/2023]
Abstract
High nitrogen application aimed at increasing crop yield is offset by higher production costs and negative environmental consequences. For wheat, only one third of the applied nitrogen is utilized, which indicates there is scope for increasing Nitrogen Use Efficiency (NUE). However, achieving greater NUE is challenged by the complexity of the trait, which comprises processes associated with nitrogen uptake, transport, reduction, assimilation, translocation and remobilization. Thus, knowledge of the genetic regulation of these processes is critical in increasing NUE. Although primary nitrogen uptake and metabolism-related genes have been well studied, the relative influence of each towards NUE is not fully understood. Recent attention has focused on engineering transcription factors and identification of miRNAs acting on expression of specific genes related to NUE. Knowledge obtained from model species needs to be translated into wheat using recently-released whole genome sequences, and by exploring genetic variations of NUE-related traits in wild relatives and ancient germplasm. Recent findings indicate the genetic basis of NUE is complex. Pyramiding various genes will be the most effective approach to achieve a satisfactory level of NUE in the field.
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Affiliation(s)
- Shahidul Islam
- State Agricultural Biotechnology Center, Murdoch University, Perth, WA, 6150, Australia
| | - Jingjuan Zhang
- State Agricultural Biotechnology Center, Murdoch University, Perth, WA, 6150, Australia
| | - Yun Zhao
- State Agricultural Biotechnology Center, Murdoch University, Perth, WA, 6150, Australia
| | - Maoyun She
- State Agricultural Biotechnology Center, Murdoch University, Perth, WA, 6150, Australia
| | - Wujun Ma
- State Agricultural Biotechnology Center, Murdoch University, Perth, WA, 6150, Australia.
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Sun P, Jia H, Zhang Y, Li J, Lu M, Hu J. Deciphering Genetic Architecture of Adventitious Root and Related Shoot Traits in Populus Using QTL Mapping and RNA-Seq Data. Int J Mol Sci 2019; 20:ijms20246114. [PMID: 31817197 PMCID: PMC6941115 DOI: 10.3390/ijms20246114] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/25/2019] [Accepted: 11/29/2019] [Indexed: 11/16/2022] Open
Abstract
Understanding the genetic architecture of adventitious root and related shoot traits will facilitate the cultivation of superior genotypes. In this study, we measured 12 adventitious root and related shoot traits of 434 F1 genotypes originating from Populus deltoides ‘Danhong’ × Populus simonii ‘Tongliao1’ and conducted an integrative analysis of quantitative trait locus (QTL) mapping and RNA-Seq data to dissect their genetic architecture and regulatory genes. Extensive segregation, high repeatability, and significant correlation relationship were detected for the investigated traits. A total of 150 QTLs were associated with adventitious root traits, explaining 3.1–6.1% of phenotypic variation (PVE); while 83 QTLs were associated with shoot traits, explaining 3.1–19.8% of PVE. Twenty-five QTL clusters and 40 QTL hotspots were identified for the investigated traits. Ten QTL clusters were overlapped in both adventitious root traits and related shoot traits. Transcriptome analysis identified 10,172 differentially expressed genes (DEGs) among two parents, three fine rooting and three poor-rooting genotypes, 143 of which were physically located within the QTL intervals. K-means cluster and weighted gene co-expression network analysis showed that PtAAAP19 (Potri.004G111400) encoding amino acid transport protein was tightly associated with adventitious roots and highly expressed in fine-rooting genotypes. Compare with ‘Danhong’, 153 bp deletion in the coding sequence of PtAAAP19 in ‘Tongliao1’ gave rise to lack one transmembrane domain, which might cause the variation of adventitious roots. Taken together, this study deciphered the genetic basis of adventitious root and related shoot traits and provided potential function genes for genetic improvement of poplar breeding.
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Affiliation(s)
- Pei Sun
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (P.S.); (H.J.); (M.L.)
| | - Huixia Jia
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (P.S.); (H.J.); (M.L.)
| | - Yahong Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (P.S.); (H.J.); (M.L.)
| | - Jianbo Li
- Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Mengzhu Lu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (P.S.); (H.J.); (M.L.)
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
| | - Jianjun Hu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (P.S.); (H.J.); (M.L.)
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Correspondence: ; Tel: +86-10-62888862
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Li L, Peng Z, Mao X, Wang J, Chang X, Reynolds M, Jing R. Genome-wide association study reveals genomic regions controlling root and shoot traits at late growth stages in wheat. ANNALS OF BOTANY 2019; 124:993-1006. [PMID: 31329816 PMCID: PMC6881226 DOI: 10.1093/aob/mcz041] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 03/01/2019] [Indexed: 05/08/2023]
Abstract
BACKGROUND AND AIMS Root system morphology is important for sustainable agriculture, but the genetic basis of root traits and their relationship to shoot traits remain to be elucidated. The aim of the present study was to dissect the genetic basis of root traits at late growth stages and its implications on shoot traits in wheat. METHODS Among 323 wheat accessions, we investigated phenotypic differences in root traits at booting and mid-grain fill stages in PVC tubes, shoot traits including plant height (PH), canopy temperature (CT) and grain yield per plant (YPP) in a field experiment, and performed a genome-wide association study with a Wheat 660K SNP Array. KEY RESULTS Deep-rooted accessions had lower CT and higher YPP than those with shallow roots, but no significant relationship was identified between root dry weight and shoot traits. Ninety-three significantly associated loci (SALs) were detected by the mixed linear model, among which three were hub SALs (Co-6A, Co-6B and Co-6D) associated with root depth at both booting and mid-grain fill stages, as well as CT and YPP. Minirhizotron system scanning results suggested that the causal genes in the three SALs may regulate root elongation in the field. The heritable independence between root depth and PH was demonstrated by linkage disequilibrium analysis. The YPP was significantly higher in genotypes which combined favourable marker alleles (FMAs) for root depth and PH, suggesting that a deep root and shorter plant height are suitable traits for pyramiding target alleles by molecular marker-assisted breeding. CONCLUSIONS These results uncovered promising genomic regions for functional gene discovery of root traits in the late growth period, enhanced understanding of correlation between root and shoot traits, and will facilitate intensive study on root morphology and breeding through molecular design.
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Affiliation(s)
- Long Li
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhi Peng
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xinguo Mao
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jingyi Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoping Chang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Matthew Reynolds
- International Maize and Wheat Improvement Center, Texcoco, Mexico
| | - Ruilian Jing
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Abdel-Ghani AH, Sharma R, Wabila C, Dhanagond S, Owais SJ, Duwayri MA, Al-Dalain SA, Klukas C, Chen D, Lübberstedt T, von Wirén N, Graner A, Kilian B, Neumann K. Genome-wide association mapping in a diverse spring barley collection reveals the presence of QTL hotspots and candidate genes for root and shoot architecture traits at seedling stage. BMC PLANT BIOLOGY 2019; 19:216. [PMID: 31122195 PMCID: PMC6533710 DOI: 10.1186/s12870-019-1828-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 05/13/2019] [Indexed: 05/19/2023]
Abstract
BACKGROUND Adaptation to drought-prone environments requires robust root architecture. Genotypes with a more vigorous root system have the potential to better adapt to soils with limited moisture content. However, root architecture is complex at both, phenotypic and genetic level. Customized mapping panels in combination with efficient screenings methods can resolve the underlying genetic factors of root traits. RESULTS A mapping panel of 233 spring barley genotypes was evaluated for root and shoot architecture traits under non-stress and osmotic stress. A genome-wide association study elucidated 65 involved genomic regions. Among them were 34 root-specific loci, eleven hotspots with associations to up to eight traits and twelve stress-specific loci. A list of candidate genes was established based on educated guess. Selected genes were tested for associated polymorphisms. By this, 14 genes were identified as promising candidates, ten remained suggestive and 15 were rejected. The data support the important role of flowering time genes, including HvPpd-H1, HvCry2, HvCO4 and HvPRR73. Moreover, seven root-related genes, HERK2, HvARF04, HvEXPB1, PIN5, PIN7, PME5 and WOX5 are confirmed as promising candidates. For the QTL with the highest allelic effect for root thickness and plant biomass a homologue of the Arabidopsis Trx-m3 was revealed as the most promising candidate. CONCLUSIONS This study provides a catalogue of hotspots for seedling growth, root and stress-specific genomic regions along with candidate genes for future potential incorporation in breeding attempts for enhanced yield potential, particularly in drought-prone environments. Root architecture is under polygenic control. The co-localization of well-known major genes for barley development and flowering time with QTL hotspots highlights their importance for seedling growth. Association analysis revealed the involvement of HvPpd-H1 in the development of the root system. The co-localization of root QTL with HERK2, HvARF04, HvEXPB1, PIN5, PIN7, PME5 and WOX5 represents a starting point to explore the roles of these genes in barley. Accordingly, the genes HvHOX2, HsfA2b, HvHAK2, and Dhn9, known to be involved in abiotic stress response, were located within stress-specific QTL regions and await future validation.
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Affiliation(s)
- Adel H. Abdel-Ghani
- Department of Plant Production, Faculty of Agriculture, Mutah University, Mutah, Karak, 61710 Jordan
| | - Rajiv Sharma
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
- Division of Plant Science, University of Dundee at JHI, Invergowrie, Dundee, DD2 5DA UK
| | - Celestine Wabila
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
| | - Sidram Dhanagond
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
| | - Saed J. Owais
- Department of Plant Production, Faculty of Agriculture, Mutah University, Mutah, Karak, 61710 Jordan
| | - Mahmud A. Duwayri
- Department of Horticulture and Agronomy, Faculty of Agriculture, University of Jordan, Amman, Jordan
| | - Saddam A. Al-Dalain
- Al-Shoubak University College, Al-Balqa’ Applied University, Al-, Salt, 19117 Jordan
| | - Christian Klukas
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
- Digitalization in Research & Development (ROM), BASF SE, 67056 Ludwigshafen, Germany
| | - Dijun Chen
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
- Department for Plant Cell and Molecular Biology, Institute for Biology, Humboldt University Berlin, 10115 Berlin, Germany
| | - Thomas Lübberstedt
- Department of Agronomy, Agronomy Hall, Iowa State University, Ames, IA 50011 USA
| | - Nicolaus von Wirén
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
| | - Andreas Graner
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
- Martin-Luther-University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120 Halle/Saale, Germany
| | - Benjamin Kilian
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
- Global Crop Diversity Trust, Platz der Vereinten Nationen 7, 53113 Bonn, Germany
| | - Kerstin Neumann
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Seeland, Germany
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Sanad MNME, Smertenko A, Garland-Campbell KA. Differential Dynamic Changes of Reduced Trait Model for Analyzing the Plastic Response to Drought Phases: A Case Study in Spring Wheat. FRONTIERS IN PLANT SCIENCE 2019; 10:504. [PMID: 31080454 PMCID: PMC6497792 DOI: 10.3389/fpls.2019.00504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 04/01/2019] [Indexed: 05/21/2023]
Abstract
Current limited water availability due to climate changes results in severe drought stress and desiccation in plants. Phenotyping drought tolerance remains challenging. In particular, our knowledge about the discriminating power of traits for capturing a plastic phenotype in high-throughput settings is scant. The study is designed to investigate the differential performance and broad-sense heritability of a battery set of morphological, physiological, and cellular traits to understand the adaptive phenotypic response to drought in spring wheat during the tillering stage. The potential of peroxisome abundance to predict the adaptive response under severe drought was assessed using a high-throughput technique for peroxisome quantification in plants. The research dissected the dynamic changes of some phenological traits during three successive phases of drought using two contrasting genotypes of adaptability to drought. The research demonstrates 5 main findings: (1) a reduction of the overall dimension of the phenological traits for robust phenotyping of the adaptive performance under drought; (2) the abundance of peroxisomes in response to drought correlate negatively with grain yield; (3) the efficiency of ROS homeostasis through peroxisome proliferation which seems to be genetically programmed; and (4) the dynamics of ROS homeostasis seems to be timing dependent mechanism, the tolerant genotype response is earlier than the susceptible genotype. This work will contribute to the identification of robust plastic phenotypic tools and the understanding of the mechanisms for adaptive behavior under drought conditions. SUMMARY STATEMENT This study presents the estimated broad-sense heritability of 24 phenological traits under drought compared with non-stressed conditions. The results demonstrated a reduced model of the overall dimension of the phenological traits for phenotyping drought tolerant response including a novel trait (peroxisome abundance). Also, it displays that the adaptive mechanism through peroxisomes proliferation that is a genetic-dependent manner and related to the stress phase, since tolerant plants can sense the stress and maintain the cellular balance earlier than the sensitive plants.
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Affiliation(s)
- Marwa N. M. E. Sanad
- Department of Genetics and Cytology, National Research Centre, Giza, Egypt
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, United States
- Institute of Biological Chemistry, Washington State University, Pullman, WA, United States
| | - Andrei Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, WA, United States
| | - Kimberley A. Garland-Campbell
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, United States
- USDA-ARS Wheat Health, Genetics, and Quality Research Unit, Washington State University, Pullman, WA, United States
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11
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Fan X, Zhang W, Zhang N, Chen M, Zheng S, Zhao C, Han J, Liu J, Zhang X, Song L, Ji J, Liu X, Ling H, Tong Y, Cui F, Wang T, Li J. Identification of QTL regions for seedling root traits and their effect on nitrogen use efficiency in wheat (Triticum aestivum L.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:2677-2698. [PMID: 30255337 DOI: 10.1007/s00122-018-3183-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 09/08/2018] [Indexed: 05/26/2023]
Abstract
QTL for a wheat ideotype root system and its plasticity to nitrogen deficiency were characterized. Root system architecture-related traits (RRTs) and their plasticity to nitrogen availability are important for nitrogen acquisition and yield formation in wheat (Triticum aestivum L.). In this study, quantitative trait loci (QTL) analysis was conducted under different nitrogen conditions, using the seedlings of 188 recombinant inbred lines derived from a cross between Kenong 9204 and Jing 411. Fifty-three QTL for seven RRTs and fourteen QTL for the plasticity of these RRTs to nitrogen deficiency were detected. Thirty of these QTL were mapped in nine clusters on chromosomes 2B, 2D, 3A, 3D, 6B, 6D, 7A and 7B. Six of these nine clusters were also colocated with loci for nitrogen use efficiency (NUE)-related traits (NRTs). Among them, three QTL clusters (C2B, C6D and C7B) were highlighted, considering that they individually harbored three stable robust QTL (i.e., QMrl-2B.1, QdRs-6D and QMrl-7B). C2B and C7B stably contributed to the optimal root system, and C6D greatly affected the plasticity of RRTs in response to nitrogen deficiency. However, strong artificial selection was only observed for C7B in 574 derivatives of Kenong 9204. Covariance analysis identified QMrl-7B as the major contributor in C7B that affected the investigated NRTs in mature plants. Phenotypic analysis indicated that thousand kernel weight might represent a "concomitant" above-ground trait of the "hidden" RRTs controlled by C7B, which are used for breeding selection. Dissecting these QTL regions with potential breeding value will ultimately facilitate the selection of donor lines with both high yield and NUE in wheat breeding programs.
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Affiliation(s)
- Xiaoli Fan
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Wei Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Na Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Mei Chen
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
| | - Shusong Zheng
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Chunhua Zhao
- Genetic Improvement Centre of Agricultural and Forest Crops, College of Agriculture, Ludong University, Yantai, 264025, China
| | - Jie Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
| | - Jiajia Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
| | - Xilan Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
| | - Liqiang Song
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jun Ji
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xigang Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Hongqing Ling
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yiping Tong
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China
| | - Fa Cui
- Genetic Improvement Centre of Agricultural and Forest Crops, College of Agriculture, Ludong University, Yantai, 264025, China.
| | - Tao Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Junming Li
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050022, China.
- State Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing, 100101, China.
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12
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Guo J, Chen G, Zhang X, Li T, Yu H, Liu C. Quantitative trait locus analysis of adventitious and lateral root morphology of barley grown at low and high P. FUNCTIONAL PLANT BIOLOGY : FPB 2018; 45:957-967. [PMID: 32291059 DOI: 10.1071/fp17271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 03/15/2018] [Indexed: 05/21/2023]
Abstract
Barley (Hordeum vulgare L) may alter its root morphology to improve P acquisition efficiency under low-P (LP) stress. This research studied the variations in adventitious and lateral root morphological traits of barley and mapped their quantitative trait loci (QTLs) under LP and high P (HP). The recombinant inbred lines were derived from the F1 population of a cross between CN4027 and Baudin. Two experiments aimed to identify QTLs related to adventitious and lateral root morphological traits under LP and HP. The length, surface area and volume of adventitious and lateral roots were measured. Under HP, Baudin had larger root morphology, especially lateral root morphology, than CN4027. LP stress induced lateral root growth but inhibited adventitious root growth. Nineteen QTLs for root morphological traits were detected. These QTLs clustered within four regions (Cl-2H, Cl-3H, Cl-4H and Cl-7H) on chromosomes 2H, 3H, 4H and 7H, with corresponding contributions of 12.0-42.9%. Some QTLs are linked with the QTLs for P efficiency detected previously, demonstrating the role of root morphological traits in P efficiency. The Cl-2H region was identified in the interval bPb3927665-bPb3265744 on chromosome 2H and had major effects on lateral root growth, especially under LP. Lateral root length and surface area increased when alleles from Baudin were present at the QTLs in Cl-2H. This study demonstrated the patterns of growth among root types and the role of lateral roots in barley's adaption to LP stress. The QTL clusters, especially Cl-2H, may offer clues for fine mapping and map-based cloning.
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Affiliation(s)
- Jingyi Guo
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Guangdeng Chen
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Xizhou Zhang
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Tingxuan Li
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Haiying Yu
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Chunji Liu
- CSIRO Agriculture, 306 Carmody Road, St Lucia, Qld 4067, Australia
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13
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Yang X, Liu Y, Wu F, Jiang X, Lin Y, Wang Z, Zhang Z, Ma J, Chen G, Wei Y, Zheng Y. Quantitative trait loci analysis of root traits under phosphorus deficiency at the seedling stage in wheat. Genome 2018; 61:209-215. [PMID: 29373804 DOI: 10.1139/gen-2017-0159] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Deficiency of available phosphorus (P) in soil limits wheat production and creates a need to develop P-deficiency-tolerant cultivars. Plant roots, important organs for absorbing nutrients and synthesizing growth regulators, are good candidates for P-efficiency screening. In this study, we evaluated five root traits under hydroponic culture conditions either with (AP) or without (NP) applied P in a recombinant inbred line population (H461/CM107) of Triticum aestivum L. at the seedling stage. Four significant quantitative trait loci (QTL) were detected, on chromosomes 1D, 2D, 3D, and 7D in NP-treated plants, explaining up to 13.0%, 11.0%, 14.4%, and 12.8% of the phenotypic variance, respectively. Among these QTL, Qrt.sicau-3D and Qrt.sicau-7D showed pleiotropic and additive effects. All QTL were found to be novel. The diversity array technology markers flanking the QTL were converted to simple sequence repeat markers that can be deployed in future genetic studies of P deficiency. These QTL lead to an increase in root biomass and respond to P-deficiency stress; these characteristics are crucial to improve root traits for breeding or further investigation of the gene(s) involved in P-deficiency tolerance.
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Affiliation(s)
- Xilan Yang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Yaxi Liu
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Fangkun Wu
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Xiaojun Jiang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Yu Lin
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Zhiqiang Wang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Zhengli Zhang
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Jian Ma
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Guangdeng Chen
- b College of Resources, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Yuming Wei
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Youliang Zheng
- a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
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14
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Zhang D, Zhou Y, Zhao X, Lv L, Zhang C, Li J, Sun G, Li S, Song C. Development and Utilization of Introgression Lines Using Synthetic Octaploid Wheat ( Aegilops tauschii × Hexaploid Wheat) as Donor. FRONTIERS IN PLANT SCIENCE 2018; 9:1113. [PMID: 30123230 PMCID: PMC6085485 DOI: 10.3389/fpls.2018.01113] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/10/2018] [Indexed: 05/21/2023]
Abstract
As the diploid progenitor of common wheat, Aegilops tauschii Cosson (DD, 2n = 2x = 14) is considered to be a promising genetic resource for the improvement of common wheat. In this work, we demonstrated that the efficiency of transferring A. tauschii segments to common wheat was clearly improved through the use of synthetic octaploid wheat (AABBDDDD, 2n = 8x = 56) as a "bridge." The synthetic octaploid was obtained by chromosome doubling of hybrid F1 (A. tauschii T015 × common wheat Zhoumai 18). A set of introgression lines (BC1F8) containing 6016 A. tauschii segments was developed and displayed significant phenotype variance among lines. Twelve agronomic traits, including growth duration, panicle traits, grain traits, and plant height (PH), were evaluated. And transgressive segregation was identified in partial lines. Additionally, better agronomic traits could be observed in some lines, compared to the recurrent parent Zhoumai 18. To verify that the significant variance of those agronomic traits was supposedly controlled by A. tauschii segments, 14 quantitative trait loci (QTLs) for three important agronomic traits (thousand kernel weight, spike length, and PH) were further located in the two environments (Huixian and Zhongmou), indicating the introgression of favorable alleles from A. tauschii into common wheat. This study provides an ameliorated strategy to improve common wheat utilizing a single A. tauschii genome.
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Affiliation(s)
- Dale Zhang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Yun Zhou
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Xinpeng Zhao
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Linlin Lv
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Cancan Zhang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Junhua Li
- School of Life Sciences, Henan Normal University, Xinxiang, China
| | - Guiling Sun
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Suoping Li
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
- *Correspondence: Suoping Li, ; Chunpeng Song,
| | - Chunpeng Song
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
- *Correspondence: Suoping Li, ; Chunpeng Song,
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15
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Ren Y, Qian Y, Xu Y, Zou C, Liu D, Zhao X, Zhang A, Tong Y. Characterization of QTLs for Root Traits of Wheat Grown under Different Nitrogen and Phosphorus Supply Levels. FRONTIERS IN PLANT SCIENCE 2017; 8:2096. [PMID: 29312372 PMCID: PMC5732362 DOI: 10.3389/fpls.2017.02096] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 11/24/2017] [Indexed: 05/21/2023]
Abstract
Root is important in acquiring nutrients from soils. Developing marker-assisted selection for wheat root traits can help wheat breeders to select roots desirable for efficient acquisition of nutrients. A recombinant inbred line (RIL) population derived from wheat varieties Xiaoyan 54 and Jing 411 was used to detect QTLs for maximum root length and root dry weight (RDW) under control, low nitrogen and low phosphorus conditions in hydrophobic culture (HC). We totally detected 17 QTLs for the investigated root traits located at 13 loci on 11 chromosomes. These loci differentially expressed under different nutrient supplying levels. The RILs simultaneously harboring positive alleles or negative alleles of the most significant three QTLs for RDW, qRDW.CK-2A, qRDW.CK-2D, and qRDW.CK-3B, were selected for soil column culture (SC) trial to verify the effects of these QTLs under soil conditions. The RILs pyramiding the positive alleles not only had significantly higher shoot dry weight, RDW, nitrogen and phosphorus uptake in all the three treatments of the HC trial, but also had significantly higher RDW distribution in both the top- and sub-soils in the SC trial than those pyramiding the negative alleles. These results suggested that QTL analysis based on hydroponic culture can provide useful information for molecular design of wheat with large and deep root system.
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Affiliation(s)
- Yongzhe Ren
- State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou, China
| | | | - Yanhua Xu
- State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou, China
| | - ChunQin Zou
- China Agricultural University, Beijing, China
| | - Dongcheng Liu
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Xueqiang Zhao
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Aimin Zhang
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Yiping Tong
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing, China
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16
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Ndour A, Vadez V, Pradal C, Lucas M. Virtual Plants Need Water Too: Functional-Structural Root System Models in the Context of Drought Tolerance Breeding. FRONTIERS IN PLANT SCIENCE 2017; 8:1577. [PMID: 29018456 PMCID: PMC5622977 DOI: 10.3389/fpls.2017.01577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/29/2017] [Indexed: 05/04/2023]
Abstract
Developing a sustainable agricultural model is one of the great challenges of the coming years. The agricultural practices inherited from the Green Revolution of the 1960s show their limits today, and new paradigms need to be explored to counter rising issues such as the multiplication of climate-change related drought episodes. Two such new paradigms are the use of functional-structural plant models to complement and rationalize breeding approaches and a renewed focus on root systems as untapped sources of plant amelioration. Since the late 1980s, numerous functional and structural models of root systems were developed and used to investigate the properties of root systems in soil or lab-conditions. In this review, we focus on the conception and use of such root models in the broader context of research on root-driven drought tolerance, on the basis of root system architecture (RSA) phenotyping. Such models result from the integration of architectural, physiological and environmental data. Here, we consider the different phenotyping techniques allowing for root architectural and physiological study and their limits. We discuss how QTL and breeding studies support the manipulation of RSA as a way to improve drought resistance. We then go over the integration of the generated data within architectural models, how those architectural models can be coupled with functional hydraulic models, and how functional parameters can be measured to feed those models. We then consider the assessment and validation of those hydraulic models through confrontation of simulations to experimentations. Finally, we discuss the up and coming challenges facing root systems functional-structural modeling approaches in the context of breeding.
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Affiliation(s)
- Adama Ndour
- Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés Aux Stress Environnementaux (LAPSE), Dakar, Senegal
- Laboratoire Commun de Microbiologie (IRD-ISRA-UCAD), Dakar, Senegal
- CERES, IRD, Université de Montpellier, UMR DIADE, Montpellier, France
- Département Maths/Informatique, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Senegal
| | - Vincent Vadez
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, India
| | - Christophe Pradal
- UMR AGAP, Univiversité de Montpellier, CIRAD, INRA, Inria, Montpellier SupAgro, Montpellier, France
| | - Mikaël Lucas
- Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés Aux Stress Environnementaux (LAPSE), Dakar, Senegal
- Laboratoire Commun de Microbiologie (IRD-ISRA-UCAD), Dakar, Senegal
- CERES, IRD, Université de Montpellier, UMR DIADE, Montpellier, France
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17
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Iannucci A, Marone D, Russo MA, De Vita P, Miullo V, Ferragonio P, Blanco A, Gadaleta A, Mastrangelo AM. Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage. Int J Genomics 2017; 2017:6876393. [PMID: 28845431 PMCID: PMC5563412 DOI: 10.1155/2017/6876393] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 05/12/2017] [Accepted: 06/21/2017] [Indexed: 01/27/2023] Open
Abstract
A segregating population of 136 recombinant inbred lines derived from a cross between the durum wheat cv. "Simeto" and the T. dicoccum accession "Molise Colli" was grown in soil and evaluated for a number of shoot and root morphological traits. A total of 17 quantitative trait loci (QTL) were identified for shoot dry weight, number of culms, and plant height and for root dry weight, volume, length, surface area, and number of forks and tips, on chromosomes 1B, 2A, 3A, 4B, 5B, 6A, 6B, and 7B. LODs were 2.1 to 21.6, with percent of explained phenotypic variability between 0.07 and 52. Three QTL were mapped to chromosome 4B, one of which corresponds to the Rht-B1 locus and has a large impact on both shoot and root traits (LOD 21.6). Other QTL that have specific effects on root morphological traits were also identified. Moreover, meta-QTL analysis was performed to compare the QTL identified in the "Simeto" × "Molise Colli" segregating population with those described in previous studies in wheat, with three novel QTL defined. Due to the complexity of phenotyping for root traits, further studies will be helpful to validate these regions as targets for breeding programs for optimization of root function for field performance.
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Affiliation(s)
- Anna Iannucci
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, Italy
| | - Daniela Marone
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, Italy
| | - Maria Anna Russo
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, Italy
| | - Pasquale De Vita
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, Italy
| | - Vito Miullo
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, Italy
| | - Pina Ferragonio
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, Italy
| | - Antonio Blanco
- Department of Soil, Plant and Food Sciences, Section of Genetic and Plant Breeding, University of Bari Aldo Moro, Via G. Amendola 165/A, 70126 Bari, Italy
| | - Agata Gadaleta
- Department of Soil, Plant and Food Sciences, Section of Genetic and Plant Breeding, University of Bari Aldo Moro, Via G. Amendola 165/A, 70126 Bari, Italy
| | - Anna Maria Mastrangelo
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, Italy
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18
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Wang J, Liu Y, Su H, Guo X, Han F. Centromere structure and function analysis in wheat-rye translocation lines. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 91:199-207. [PMID: 28370580 DOI: 10.1111/tpj.13554] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 03/19/2017] [Accepted: 03/23/2017] [Indexed: 05/12/2023]
Abstract
1RS.1BL translocations are centric translocations formed by misdivision and have been used extensively in wheat breeding. However, the role that the centromere plays in the formation of 1RS.1BL translocations is still unclear. Fluorescence in situ hybridization (FISH) was applied to detect the fine structures of the centromeres in 130 1RS.1BL translocation cultivars. Immuno-FISH, chromatin immunoprecipitation (ChIP)-qPCR and RT-PCR were used to investigate the functions of the hybrid centromeres in 1RS.1BL translocations. New 1R translocations with different centromere structures were created by misdivision and pollen irradiation to elucidate the role that the centromere plays in the formation of 1RS.1BL translocations. We found that all of the 1RS.1BL translocations detected contained hybrid centromeres and that wheat-derived CENH3 bound to both the wheat and rye centromeres in the 1RS.1BL translocation chromosomes. Moreover, a rye centromere-specific retrotransposon was actively transcribed in 1RS.1BL translocations. The frequencies of new 1RS hybrid centromere translocations and group-1 chromosome translocations were higher during 1R misdivision. Our study demonstrates the hybrid nature of the centromere in 1RS.1BL translocations. New 1R translocations with different centromere structures were created to help understand the fusion centromere used for wheat breeding and for use as breeding material for the improvement of wheat.
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Affiliation(s)
- Jing Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yalin Liu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Handong Su
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xianrui Guo
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fangpu Han
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
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19
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Voss-Fels KP, Qian L, Parra-Londono S, Uptmoor R, Frisch M, Keeble-Gagnère G, Appels R, Snowdon RJ. Linkage drag constrains the roots of modern wheat. PLANT, CELL & ENVIRONMENT 2017; 40:717-725. [PMID: 28036107 DOI: 10.1111/pce.12888] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/20/2016] [Accepted: 12/21/2016] [Indexed: 05/19/2023]
Abstract
Roots, the hidden half of crop plants, are essential for resource acquisition. However, knowledge about the genetic control of below-ground plant development in wheat, one of the most important small-grain crops in the world, is very limited. The molecular interactions connecting root and shoot development and growth, and thus modulating the plant's demand for water and nutrients along with its ability to access them, are largely unexplored. Here, we demonstrate that linkage drag in European bread wheat, driven by strong selection for a haplotype variant controlling heading date, has eliminated a specific combination of two flanking, highly conserved haplotype variants whose interaction confers increased root biomass. Reversing this inadvertent consequence of selection could recover root diversity that may prove essential for future food production in fluctuating environments. Highly conserved synteny to rice across this chromosome segment suggests that adaptive selection has shaped the diversity landscape of this locus across different, globally important cereal crops. By mining wheat gene expression data, we identified root-expressed genes within the region of interest that could help breeders to select positive variants adapted to specific target soil environments.
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Affiliation(s)
- Kai P Voss-Fels
- Department of Plant Breeding, IFZ Research Centre for Biosystems, Land Use and Nutrition, Justus Liebig University, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
| | - Lunwen Qian
- Department of Plant Breeding, IFZ Research Centre for Biosystems, Land Use and Nutrition, Justus Liebig University, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
| | - Sebastian Parra-Londono
- Department of Agronomy, University of Rostock, Justus-von-Liebig-Weg 6, 18059, Rostock, Germany
| | - Ralf Uptmoor
- Department of Agronomy, University of Rostock, Justus-von-Liebig-Weg 6, 18059, Rostock, Germany
| | - Matthias Frisch
- Department of Biometry and Population Genetics, IFZ Research Centre for Biosystems, Land Use and Nutrition, Justus Liebig University, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
| | - Gabriel Keeble-Gagnère
- AgriBio, Centre for AgriBioscience, Department of Economic Development, Jobs, Transport and Resources (DEDJTR), Bundoora, Victoria, 3083, Australia
| | - Rudi Appels
- State Agriculture Biotechnology Centre, School of Veterinary and Life Sciences, Murdoch University, Australia Export Grains Innovation Centre (AEGIC), Perth, WA, 6150, Australia
| | - Rod J Snowdon
- Department of Plant Breeding, IFZ Research Centre for Biosystems, Land Use and Nutrition, Justus Liebig University, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
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20
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QTL Analysis for Drought Tolerance in Wheat: Present Status and Future Possibilities. AGRONOMY-BASEL 2017. [DOI: 10.3390/agronomy7010005] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Liang Q, Li P, Hu C, Hua H, Li Z, Rong Y, Wang K, Hua J. Dynamic QTL and epistasis analysis on seedling root traits in upland cotton. J Genet 2015; 93:63-78. [PMID: 24840824 DOI: 10.1007/s12041-014-0341-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Roots are involved in acquisition of water and nutrients, as well as in providing structural support to plant. The root system provides a dynamic model for developmental analysis. Here, we investigated quantitative trait loci (QTL), dynamic conditional QTL and epistatic interactions for seedling root traits using an upland cotton F2 population and a constructed genetic map. Totally, 37 QTLs for root traits, 35 dynamic conditional QTLs based on the net increased amount of root traits (root tips, forks, length, surface area and volume) (i) after transplanting 10 days compared to 5 days, and (ii) after transplanting 15 days to 10 days were detected. Obvious dynamic characteristic of QTL and dynamic conditional QTL existed at different developmental stages of root because QTL and dynamic conditional QTL had not been detected simultaneously. We further confirmed that additive and dominance effects of QTL qRSA-chr1-1 in interval time 5 to 10 DAT (days after transplant) offset the effects in 10 to 15 DAT. Lots of two-locus interactions for root traits were identified unconditionally or dynamically, and a few epistatic interactions were only detected simultaneously in interval time of 5-10 DAT and 10-15 DAT, suggesting different interactive genetic mechanisms on root development at different stages. Dynamic conditional QTL and epistasis effects provide new attempts to understand the dynamics of roots and provide clues for root architecture selection in upland cotton.
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Affiliation(s)
- Qingzhi Liang
- College of Agronomy and Biotechnology, Key Laboratory of Crop Heterosis and Utilization of Ministry of Education, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, People's Republic of China.
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22
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Sandhu N, Torres RO, Sta Cruz MT, Maturan PC, Jain R, Kumar A, Henry A. Traits and QTLs for development of dry direct-seeded rainfed rice varieties. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:225-44. [PMID: 25336682 PMCID: PMC4265160 DOI: 10.1093/jxb/eru413] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The development of rice varieties for dry direct-seeded conditions can be accelerated by selecting suitable traits. In the present investigation, traits hypothesized to be important for direct-seeded conditions in rainfed systems, including seedling emergence, early vegetative vigour, nutrient uptake, nodal root number, and root hair length and density, were characterized to study the genetic control of these traits and their relationship with grain yield under seedling- and reproductive-stage drought stress. Two BC₂F₄ mapping populations derived from crosses of Aus276, a drought-tolerant aus variety, with MTU1010 and IR64, high-yielding indica mega-varieties, were developed and studied to identify quantitative trait loci (QTLs) that showed large and consistent effects. A total of 26 QTLs associated with 23 traits and 20 QTLs associated with 13 traits were mapped in the Aus276/3*IR64 and Aus276/3*MTU1010 populations, respectively. qGY₆.₁, qGY₁₀.₁, qGY₁.₁, and qEVV₉.₁ were found to be effective in both populations under a wide range of conditions. QTLs for several seedling-stage traits co-located with QTLs for grain yield, including early vegetative vigour and root hair length. On chromosome 5, several QTLs for nutrient uptake co-located with QTLs for root hair density and nematode gall rating. Six lines were selected from both populations based on grain yield and the presence of QTLs, and these lines typically showed improved seedling-stage traits (nodal root number, dry shoot weight, and root hair length and density). The co-located QTLs identified here can be used in research aimed at increasing the yield and adaptability of rainfed rice to direct-seeded conditions.
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Affiliation(s)
- Nitika Sandhu
- Division of Plant Breeding, Genetics, and Biotechnology, International Rice Research Institute, DAPO Box 7777, Metro Manila, The Philippines Department of Molecular Biology and Biotechnology, CCS Haryana Agricultural University, Hisar-125004, India
| | - Rolando O Torres
- Crop and Environmental Sciences Division, International Rice Research Institute, DAPO Box 7777, Metro Manila, The Philippines
| | - Ma Teresa Sta Cruz
- Division of Plant Breeding, Genetics, and Biotechnology, International Rice Research Institute, DAPO Box 7777, Metro Manila, The Philippines
| | - Paul Cornelio Maturan
- Division of Plant Breeding, Genetics, and Biotechnology, International Rice Research Institute, DAPO Box 7777, Metro Manila, The Philippines
| | - Rajinder Jain
- Department of Molecular Biology and Biotechnology, CCS Haryana Agricultural University, Hisar-125004, India
| | - Arvind Kumar
- Division of Plant Breeding, Genetics, and Biotechnology, International Rice Research Institute, DAPO Box 7777, Metro Manila, The Philippines
| | - Amelia Henry
- Crop and Environmental Sciences Division, International Rice Research Institute, DAPO Box 7777, Metro Manila, The Philippines
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23
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Howell T, Hale I, Jankuloski L, Bonafede M, Gilbert M, Dubcovsky J. Mapping a region within the 1RS.1BL translocation in common wheat affecting grain yield and canopy water status. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2014; 127:2695-709. [PMID: 25322723 PMCID: PMC4236633 DOI: 10.1007/s00122-014-2408-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 10/01/2014] [Indexed: 05/03/2023]
Abstract
This study identifies a small distal region of the 1RS chromosome from rye that has a positive impact on wheat yield. The translocation of the short arm of rye (Secale cereale L.) chromosome one (1RS) onto wheat (Triticum aestivum L.) chromosome 1B (1RS.1BL) is used in wheat breeding programs worldwide due to its positive effect on yield, particularly under abiotic stress. Unfortunately, this translocation is associated with poor bread-making quality. To mitigate this problem, the 1RS arm was engineered by the removal and replacement of two interstitial rye segments with wheat chromatin: a distal segment to introduce the Glu-B3/Gli-B1 loci from wheat, and a proximal segment to remove the rye Sec-1 locus. We used this engineered 1RS chromosome (henceforth 1RS(WW)) to develop and evaluate two sets of 1RS/1RS(WW) near isogenic lines (NILs). Field trials showed that standard 1RS lines had significantly higher yield and better canopy water status than the 1RS(WW) NILs in both well-watered and water-stressed environments. We intercrossed the 1RS and 1RS(WW) lines and generated two additional NILs, one carrying the distal (1RS(RW)) and the other carrying the proximal (1RS(WR)) wheat segment. Lines not carrying the distal wheat region (1RS and 1RS(WR)) showed significant improvements in grain yield and canopy water status compared to NILs carrying the distal wheat segment (1RS(WW) and 1RS(RW)), indicating that the 1RS region replaced by the distal wheat segment carries the beneficial allele(s). NILs without the distal wheat segment also showed higher carbon isotope discrimination and increased stomatal conductance, suggesting that these plants had improved access to water. The 1RS(WW), 1RS(WR) and 1RS(RW) NILs have been deposited in the National Small Grains Collection.
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Affiliation(s)
- Tyson Howell
- Department of Plant Sciences, University of California, Davis, CA 95616 USA
| | - Iago Hale
- Department of Plant Sciences, University of California, Davis, CA 95616 USA
- Department of Biological Sciences, University of New Hampshire, Durham, NH 03824 USA
| | - Ljupcho Jankuloski
- Department of Plant Sciences, University of California, Davis, CA 95616 USA
- Department of Genetics and Plant Breeding, Faculty of Agricultural Sciences and Food, 1000 Skopje, Macedonia
- Plant Breeding and Genetics Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, IAEA, 1400 Vienna, Austria
| | - Marcos Bonafede
- Department of Plant Sciences, University of California, Davis, CA 95616 USA
- Instituto de Recursos Biológicos, CIRN, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
| | - Matthew Gilbert
- Department of Plant Sciences, University of California, Davis, CA 95616 USA
| | - Jorge Dubcovsky
- Department of Plant Sciences, University of California, Davis, CA 95616 USA
- Howard Hughes Medical Institute, Chevy Chase, MD 20815 USA
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24
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Petrarulo M, Marone D, Ferragonio P, Cattivelli L, Rubiales D, De Vita P, Mastrangelo AM. Genetic analysis of root morphological traits in wheat. Mol Genet Genomics 2014; 290:785-806. [PMID: 25416422 DOI: 10.1007/s00438-014-0957-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 11/11/2014] [Indexed: 02/05/2023]
Abstract
Traits related to root architecture are of great importance for yield performance of crop species, although they remain poorly understood. The present study is aimed at identifying the genomic regions involved in the control of root morphological traits in durum wheat (Triticum durum Desf.). A set of 123 recombinant inbred lines derived from the durum wheat cross of cvs. 'Creso' × 'Pedroso' were grown hydroponically to two growth stages, and were phenotypically evaluated for a number of root traits. In addition, meta-(M)QTL analysis was performed that considered the results of other root traits studies in wheat, to compare with the 'Creso' × 'Pedroso' cross and to increase the QTL detection power. Eight quantitative trait loci (QTL) for traits related to root morphology were identified on chromosomes 1A, 1B, 2A, 3A, 6A and 6B in the 'Creso' × 'Pedroso' segregating population. Twenty-two MQTL that comprised from two to six individual QTL that had widely varying confidence intervals were found on 14 chromosomes. The data from the present study provide a detailed analysis of the genetic basis of morphological root traits in wheat. This study of the 'Creso' × 'Pedroso' durum-wheat population has revealed some QTL that had not been previously identified.
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Affiliation(s)
- Maria Petrarulo
- Consiglio per la Ricerca e la Sperimentazione in Agricoltura-Cereal Research Centre, SS 673 km 25.200, 71122, Foggia, Italy
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25
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Adu MO, Chatot A, Wiesel L, Bennett MJ, Broadley MR, White PJ, Dupuy LX. A scanner system for high-resolution quantification of variation in root growth dynamics of Brassica rapa genotypes. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:2039-48. [PMID: 24604732 PMCID: PMC3991737 DOI: 10.1093/jxb/eru048] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The potential exists to breed for root system architectures that optimize resource acquisition. However, this requires the ability to screen root system development quantitatively, with high resolution, in as natural an environment as possible, with high throughput. This paper describes the construction of a low-cost, high-resolution root phenotyping platform, requiring no sophisticated equipment and adaptable to most laboratory and glasshouse environments, and its application to quantify environmental and temporal variation in root traits between genotypes of Brassica rapa L. Plants were supplied with a complete nutrient solution through the wick of a germination paper. Images of root systems were acquired without manual intervention, over extended periods, using multiple scanners controlled by customized software. Mixed-effects models were used to describe the sources of variation in root traits contributing to root system architecture estimated from digital images. It was calculated that between one and 43 replicates would be required to detect a significant difference (95% CI 50% difference between traits). Broad-sense heritability was highest for shoot biomass traits (>0.60), intermediate (0.25-0.60) for the length and diameter of primary roots and lateral root branching density on the primary root, and lower (<0.25) for other root traits. Models demonstrate that root traits show temporal variations of various types. The phenotyping platform described here can be used to quantify environmental and temporal variation in traits contributing to root system architecture in B. rapa and can be extended to screen the large populations required for breeding for efficient resource acquisition.
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Affiliation(s)
- Michael O. Adu
- Department of Ecological Sciences, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, UK
| | - Antoine Chatot
- Department of Ecological Sciences, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
| | - Lea Wiesel
- Department of Ecological Sciences, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
| | - Malcolm J. Bennett
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, UK
| | - Martin R. Broadley
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, UK
| | - Philip J. White
- Department of Ecological Sciences, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
| | - Lionel X. Dupuy
- Department of Ecological Sciences, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
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26
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Kuzmanović L, Gennaro A, Benedettelli S, Dodd IC, Quarrie SA, Ceoloni C. Structural-functional dissection and characterization of yield-contributing traits originating from a group 7 chromosome of the wheatgrass species Thinopyrum ponticum after transfer into durum wheat. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:509-25. [PMID: 24319256 PMCID: PMC3904708 DOI: 10.1093/jxb/ert393] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
For the first time, using chromosome engineering of durum wheat, the underlying genetic determinants of a yield-improving segment from Thinopyrum ponticum (7AgL) were dissected. Three durum wheat-Th. ponticum near-isogenic recombinant lines (NIRLs), with distal portions of their 7AL arm (fractional lengths 0.77, 0.72, and 0.60) replaced by alien chromatin, were field-tested for two seasons under rainfed conditions. Yield traits and other agronomic characteristics of the main shoot and whole plant were measured. Loci for seed number per ear and per spikelet were detected in the proximal 7AgL segment (0.60-0.72). Loci determining considerable increases of flag leaf width and area, productive tiller number per plant, biomass per plant, and grain yield per plant were located in the distally adjacent 0.72-0.77 7AgL segment, while in the most distal portion (0.77-1.00) genetic effects on spikelet number per ear were identified. Contrary to previous reports, trials with the bread wheat T4 translocation line, carrying on 7DL a sizeable 7AgL segment of which those present in the durum wheat-Th. ponticum NIRLs represent fractions, gave no yield advantage. The hypothesis that ABA might be a factor contributing to the 7AgL effects was tested by analysing endogenous ABA contents of the NIRLs and their responses to exogenous ABA application. The 7AgL yield-related loci were shown to be ABA-independent. This study highlights the value of wheat-alien recombinant lines for dissecting the genetic and physiological basis of complex traits present in wild germplasm, and provides a basis for their targeted exploitation in wheat breeding.
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Affiliation(s)
- Ljiljana Kuzmanović
- Department of Agriculture, Forestry, Nature and Energy (DAFNE), University of Tuscia, Viterbo, Italy
| | - Andrea Gennaro
- Department of Agriculture, Forestry, Nature and Energy (DAFNE), University of Tuscia, Viterbo, Italy
| | - Stefano Benedettelli
- Department of Plant, Soil and Environmental Sciences, University of Florence, Florence, Italy
| | - Ian C. Dodd
- The Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | | | - Carla Ceoloni
- Department of Agriculture, Forestry, Nature and Energy (DAFNE), University of Tuscia, Viterbo, Italy
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27
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Canè MA, Maccaferri M, Nazemi G, Salvi S, Francia R, Colalongo C, Tuberosa R. Association mapping for root architectural traits in durum wheat seedlings as related to agronomic performance. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2014; 34:1629-1645. [PMID: 25506257 PMCID: PMC4257993 DOI: 10.1007/s11032-014-0177-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 10/08/2014] [Indexed: 05/18/2023]
Abstract
Association mapping provides useful insights on the genetic architecture of quantitative traits across a large number of unrelated genotypes, which in turn allows an informed choice of the lines to be crossed for a more accurate characterization of major QTLs in a biparental genetic background. In this study, seedlings of 183 durum wheat elite accessions were evaluated in order to identify QTLs for root system architecture (RSA). The QTLs identified were compared with QTLs detected for grain yield and its component traits, plant height and peduncle length measured in a previous study where the same accessions were evaluated in 15 field trials with a broad range of soil moisture availability and productivity (Maccaferri et al. in J Exp Bot 62:409-438, 2011). The following RSA features were investigated in seedlings at the four-leaf stage: seminal root angle, primary root length, total root length, average root length, root number and shoot length. Highly significant differences among accessions were detected for all traits. The highest repeatability (h2 = 0.72) was observed for seminal root angle. Out of the 48 QTLs detected for RSA, 15 overlapped with QTLs for agronomic traits and/or grain yield in two or more environments. The congruency of the effects of RSA traits and agronomic traits was evaluated. Seminal root angle and root number appear the most promising traits for further studies on the adaptive role of RSA plasticity on field performance in environments differing for water availability. Our results provide novel insights on the genetic control of RSA and its implications on field performance of durum wheat.
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Affiliation(s)
- Maria Angela Canè
- Department of Agricultural Sciences (DipSA), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
| | - Marco Maccaferri
- Department of Agricultural Sciences (DipSA), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
| | - Ghasemali Nazemi
- Department of Agricultural Sciences (DipSA), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
- Department of Plant Production, I.A.U. Haji abad Branch, Haji abad, Iran
| | - Silvio Salvi
- Department of Agricultural Sciences (DipSA), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
| | - Rossella Francia
- Department of Agricultural Sciences (DipSA), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
| | - Chiara Colalongo
- Department of Agricultural Sciences (DipSA), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
| | - Roberto Tuberosa
- Department of Agricultural Sciences (DipSA), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
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28
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Wulff BBH, Moscou MJ. Strategies for transferring resistance into wheat: from wide crosses to GM cassettes. FRONTIERS IN PLANT SCIENCE 2014; 5:692. [PMID: 25538723 PMCID: PMC4255625 DOI: 10.3389/fpls.2014.00692] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 11/20/2014] [Indexed: 05/19/2023]
Abstract
The domestication of wheat in the Fertile Crescent 10,000 years ago led to a genetic bottleneck. Modern agriculture has further narrowed the genetic base by introducing extreme levels of uniformity on a vast spatial and temporal scale. This reduction in genetic complexity renders the crop vulnerable to new and emerging pests and pathogens. The wild relatives of wheat represent an important source of genetic variation for disease resistance. For nearly a century farmers, breeders, and cytogeneticists have sought to access this variation for crop improvement. Several barriers restricting interspecies hybridization and introgression have been overcome, providing the opportunity to tap an extensive reservoir of genetic diversity. Resistance has been introgressed into wheat from at least 52 species from 13 genera, demonstrating the remarkable plasticity of the wheat genome and the importance of such natural variation in wheat breeding. Two main problems hinder the effective deployment of introgressed resistance genes for crop improvement: (1) the simultaneous introduction of genetically linked deleterious traits and (2) the rapid breakdown of resistance when deployed individually. In this review, we discuss how recent advances in molecular genomics are providing new opportunities to overcome these problems.
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Affiliation(s)
- Brande B. H. Wulff
- Department of Crop Genetics, John Innes Centre, Norwich, Norfolk, UK
- *Correspondence: Brande B. H. Wulff, Department of Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, Norfolk NR4 7UH, UK e-mail: ; Matthew J. Moscou, The Sainsbury Laboratory, Norwich Research Park, Norwich, Norfolk NR4 7UH, UK e-mail:
| | - Matthew J. Moscou
- The Sainsbury Laboratory, Norwich, Norfolk, UK
- *Correspondence: Brande B. H. Wulff, Department of Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, Norfolk NR4 7UH, UK e-mail: ; Matthew J. Moscou, The Sainsbury Laboratory, Norwich Research Park, Norwich, Norfolk NR4 7UH, UK e-mail:
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29
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Comas LH, Becker SR, Cruz VMV, Byrne PF, Dierig DA. Root traits contributing to plant productivity under drought. FRONTIERS IN PLANT SCIENCE 2013. [PMID: 24204374 DOI: 10.3389/fenvs.2014.00442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Geneticists and breeders are positioned to breed plants with root traits that improve productivity under drought. However, a better understanding of root functional traits and how traits are related to whole plant strategies to increase crop productivity under different drought conditions is needed. Root traits associated with maintaining plant productivity under drought include small fine root diameters, long specific root length, and considerable root length density, especially at depths in soil with available water. In environments with late season water deficits, small xylem diameters in targeted seminal roots save soil water deep in the soil profile for use during crop maturation and result in improved yields. Capacity for deep root growth and large xylem diameters in deep roots may also improve root acquisition of water when ample water at depth is available. Xylem pit anatomy that makes xylem less "leaky" and prone to cavitation warrants further exploration holding promise that such traits may improve plant productivity in water-limited environments without negatively impacting yield under adequate water conditions. Rapid resumption of root growth following soil rewetting may improve plant productivity under episodic drought. Genetic control of many of these traits through breeding appears feasible. Several recent reviews have covered methods for screening root traits but an appreciation for the complexity of root systems (e.g., functional differences between fine and coarse roots) needs to be paired with these methods to successfully identify relevant traits for crop improvement. Screening of root traits at early stages in plant development can proxy traits at mature stages but verification is needed on a case by case basis that traits are linked to increased crop productivity under drought. Examples in lesquerella (Physaria) and rice (Oryza) show approaches to phenotyping of root traits and current understanding of root trait genetics for breeding.
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Affiliation(s)
- Louise H Comas
- Water Management Research, United States Department of Agriculture-Agricultural Research Service Fort Collins, CO, USA
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30
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Comas LH, Becker SR, Cruz VMV, Byrne PF, Dierig DA. Root traits contributing to plant productivity under drought. FRONTIERS IN PLANT SCIENCE 2013; 4:442. [PMID: 24204374 PMCID: PMC3817922 DOI: 10.3389/fpls.2013.00442] [Citation(s) in RCA: 451] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 10/15/2013] [Indexed: 05/17/2023]
Abstract
Geneticists and breeders are positioned to breed plants with root traits that improve productivity under drought. However, a better understanding of root functional traits and how traits are related to whole plant strategies to increase crop productivity under different drought conditions is needed. Root traits associated with maintaining plant productivity under drought include small fine root diameters, long specific root length, and considerable root length density, especially at depths in soil with available water. In environments with late season water deficits, small xylem diameters in targeted seminal roots save soil water deep in the soil profile for use during crop maturation and result in improved yields. Capacity for deep root growth and large xylem diameters in deep roots may also improve root acquisition of water when ample water at depth is available. Xylem pit anatomy that makes xylem less "leaky" and prone to cavitation warrants further exploration holding promise that such traits may improve plant productivity in water-limited environments without negatively impacting yield under adequate water conditions. Rapid resumption of root growth following soil rewetting may improve plant productivity under episodic drought. Genetic control of many of these traits through breeding appears feasible. Several recent reviews have covered methods for screening root traits but an appreciation for the complexity of root systems (e.g., functional differences between fine and coarse roots) needs to be paired with these methods to successfully identify relevant traits for crop improvement. Screening of root traits at early stages in plant development can proxy traits at mature stages but verification is needed on a case by case basis that traits are linked to increased crop productivity under drought. Examples in lesquerella (Physaria) and rice (Oryza) show approaches to phenotyping of root traits and current understanding of root trait genetics for breeding.
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Affiliation(s)
- Louise H. Comas
- Water Management Research, United States Department of Agriculture-Agricultural Research ServiceFort Collins, CO, USA
| | - Steven R. Becker
- Department of Soil and Crop Sciences, Colorado State UniversityFort Collins, CO, USA
| | - Von Mark V. Cruz
- National Center for Genetic Resources Preservation, United States Department of Agriculture-Agricultural Research ServiceFort Collins, CO, USA
- Bioagricultural Sciences and Pest Management, Colorado State UniversityFort Collins, CO, USA
| | - Patrick F. Byrne
- Department of Soil and Crop Sciences, Colorado State UniversityFort Collins, CO, USA
| | - David A. Dierig
- National Center for Genetic Resources Preservation, United States Department of Agriculture-Agricultural Research ServiceFort Collins, CO, USA
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31
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Christopher J, Christopher M, Jennings R, Jones S, Fletcher S, Borrell A, Manschadi AM, Jordan D, Mace E, Hammer G. QTL for root angle and number in a population developed from bread wheats (Triticum aestivum) with contrasting adaptation to water-limited environments. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2013; 126:1563-74. [PMID: 23525632 DOI: 10.1007/s00122-013-2074-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 02/23/2013] [Indexed: 05/03/2023]
Abstract
Root architecture traits in wheat are important in deep soil moisture acquisition and may be used to improve adaptation to water-limited environments. The genetic architecture of two root traits, seminal root angle and seminal root number, were investigated using a doubled haploid population derived from SeriM82 and Hartog. Multiple novel quantitative trait loci (QTL) were identified, each one having a modest effect. For seminal root angle, four QTL (-log10(P) >3) were identified on 2A, 3D, 6A and 6B, and two suggestive QTL (-log10(P) >2) on 5D and 6B. For root number, two QTL were identified on 4A and 6A with four suggestive QTL on 1B, 3A, 3B and 4A. QTL for root angle and root number did not co-locate. Transgressive segregation was found for both traits. Known major height and phenology loci appear to have little effect on root angle and number. Presence or absence of the T1BL.1RS translocation did not significantly influence root angle. Broad sense heritability (h (2)) was estimated as 50 % for root angle and 31 % for root number. Root angle QTL were found to be segregating between wheat cultivars adapted to the target production region indicating potential to select for root angle in breeding programs.
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Affiliation(s)
- Jack Christopher
- University of Queensland, Queensland Alliance for Agriculture and Food Innovation (QAAFI), Leslie Research Facility, PO Box 2282, Toowoomba, QLD 4350, Australia.
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32
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Bai C, Liang Y, Hawkesford MJ. Identification of QTLs associated with seedling root traits and their correlation with plant height in wheat. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:1745-53. [PMID: 23564959 PMCID: PMC3617839 DOI: 10.1093/jxb/ert041] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Genetic relationships between plant height and root morphology were investigated in a diverse set of wheat germplasm [199 double-haploid progeny derived from a cross between Avalon and Cadenza (Triticum aestivum L.), Rht near-isogenic lines (NILs), and accessions from the Watkins Collection] to investigate whether Rht genes controlling shoot height also control seedling root growth. A germination paper screen was developed to measure seedling root length (distinguishing seminal axes from seminal lateral roots), surface area, volume, and dry weight, and these were compared with shoot dry weight and the root to shoot ratio. Field experiments were conducted to measure mature plant height (PH) and grain characteristics for the mapping population. Forty-three quantitative trait loci (QTLs) for PH, root and seed traits were identified. Some QTLs for roots and either height or seed characteristics were coincident: chromosome 2D had co-locating root and PH QTLs; chromosomes 4D had co-locating root, PH, and seed QTLs; chromosome 5A and 6A had co-locating root and seed QTLs; and other non-co-locating root and PH QTLs were found on chromosomes 3A and 3B. Rht NILs illustrated that some known dwarfing genes reduce both PH and root proliferation. However, analysis of 25 short and 23 tall lines from the Watkins wheat germplasm collection indicated that PH and root proliferation are not simply related.
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Affiliation(s)
- Caihong Bai
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
- Rothamsted Research, Harpenden AL5 2JQ, UK
| | - Yinli Liang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
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Fluch S, Kopecky D, Burg K, Šimková H, Taudien S, Petzold A, Kubaláková M, Platzer M, Berenyi M, Krainer S, Doležel J, Lelley T. Sequence composition and gene content of the short arm of rye (Secale cereale) chromosome 1. PLoS One 2012; 7:e30784. [PMID: 22328922 PMCID: PMC3273464 DOI: 10.1371/journal.pone.0030784] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Accepted: 12/26/2011] [Indexed: 01/21/2023] Open
Abstract
Background The purpose of the study is to elucidate the sequence composition of the short arm of rye chromosome 1 (Secale cereale) with special focus on its gene content, because this portion of the rye genome is an integrated part of several hundreds of bread wheat varieties worldwide. Methodology/Principal Findings Multiple Displacement Amplification of 1RS DNA, obtained from flow sorted 1RS chromosomes, using 1RS ditelosomic wheat-rye addition line, and subsequent Roche 454FLX sequencing of this DNA yielded 195,313,589 bp sequence information. This quantity of sequence information resulted in 0.43× sequence coverage of the 1RS chromosome arm, permitting the identification of genes with estimated probability of 95%. A detailed analysis revealed that more than 5% of the 1RS sequence consisted of gene space, identifying at least 3,121 gene loci representing 1,882 different gene functions. Repetitive elements comprised about 72% of the 1RS sequence, Gypsy/Sabrina (13.3%) being the most abundant. More than four thousand simple sequence repeat (SSR) sites mostly located in gene related sequence reads were identified for possible marker development. The existence of chloroplast insertions in 1RS has been verified by identifying chimeric chloroplast-genomic sequence reads. Synteny analysis of 1RS to the full genomes of Oryza sativa and Brachypodium distachyon revealed that about half of the genes of 1RS correspond to the distal end of the short arm of rice chromosome 5 and the proximal region of the long arm of Brachypodium distachyon chromosome 2. Comparison of the gene content of 1RS to 1HS barley chromosome arm revealed high conservation of genes related to chromosome 5 of rice. Conclusions The present study revealed the gene content and potential gene functions on this chromosome arm and demonstrated numerous sequence elements like SSRs and gene-related sequences, which can be utilised for future research as well as in breeding of wheat and rye.
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Affiliation(s)
- Silvia Fluch
- Health and Environment Department, Bioresources, Austrian Institute of Technology (AIT), Tulln, Austria
| | - Dieter Kopecky
- Health and Environment Department, Bioresources, Austrian Institute of Technology (AIT), Tulln, Austria
| | - Kornel Burg
- Health and Environment Department, Bioresources, Austrian Institute of Technology (AIT), Tulln, Austria
- * E-mail:
| | - Hana Šimková
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Olomouc, Czech Republic
| | - Stefan Taudien
- Leibniz Institute for Age Research (Fritz Lipmann Institute), Jena, Germany
| | - Andreas Petzold
- Leibniz Institute for Age Research (Fritz Lipmann Institute), Jena, Germany
| | - Marie Kubaláková
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Olomouc, Czech Republic
| | - Matthias Platzer
- Leibniz Institute for Age Research (Fritz Lipmann Institute), Jena, Germany
| | - Maria Berenyi
- Health and Environment Department, Bioresources, Austrian Institute of Technology (AIT), Tulln, Austria
| | - Siegfried Krainer
- Health and Environment Department, Bioresources, Austrian Institute of Technology (AIT), Tulln, Austria
| | - Jaroslav Doležel
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Olomouc, Czech Republic
| | - Tamas Lelley
- Department of Agrobiotechnology, Institute for Biotechnology in Plant Production (IFA-Tulln), University of Natural Resources and Applied Life Sciences (BOKU), Vienna, Austria
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Osman AM, Struik PC, van Bueren ETL. Perspectives to breed for improved baking quality wheat varieties adapted to organic growing conditions. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2012; 92:207-215. [PMID: 22083663 DOI: 10.1002/jsfa.4710] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Revised: 09/26/2011] [Accepted: 09/27/2011] [Indexed: 05/31/2023]
Abstract
Northwestern European consumers like their bread to be voluminous and easy to chew. These attributes require a raw material that is rich in protein with, among other characteristics, a suitable ratio between gliadins and glutenins. Achieving this is a challenge for organic growers, because they lack cultivars that can realise high protein concentrations under the relatively low and variable availability of nitrogen during the grain-filling phase common in organic farming. Relatively low protein content in wheat grains thus needs to be compensated by a high proportion of high-quality protein. Organic farming therefore needs cultivars with genes encoding for optimal levels of glutenins and gliadins, a maximum ability for nitrogen uptake, a large storage capacity of nitrogen in the biomass, an adequate balance between vegetative and reproductive growth, a high nitrogen translocation efficiency for the vegetative parts into the grains during grain filling and an efficient conversion of nitrogen into high-quality proteins. In this perspective paper the options to breed and grow such varieties are discussed.
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Affiliation(s)
- Aart M Osman
- Louis Bolk Institute, Hoofdstraat 24, NL-3972 LA Driebergen, The Netherlands.
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Alien introgressions represent a rich source of genes for crop improvement. Proc Natl Acad Sci U S A 2011; 108:7657-8. [PMID: 21527718 DOI: 10.1073/pnas.1104845108] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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