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Ur Rahman S, Han JC, Ahmad M, Ashraf MN, Khaliq MA, Yousaf M, Wang Y, Yasin G, Nawaz MF, Khan KA, Du Z. Aluminum phytotoxicity in acidic environments: A comprehensive review of plant tolerance and adaptation strategies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115791. [PMID: 38070417 DOI: 10.1016/j.ecoenv.2023.115791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/28/2023] [Accepted: 12/04/2023] [Indexed: 01/12/2024]
Abstract
Aluminum (Al), a non-essential metal for plant growth, exerts significant phytotoxic effects, particularly on root growth. Anthropogenic activities would intensify Al's toxic effects by releasing Al3+ into the soil solution, especially in acidic soils with a pH lower than 5.5 and rich mineral content. The severity of Al-induced phytotoxicity varies based on factors such as Al concentration, ionic form, plant species, and growth stages. Al toxicity leads to inhibited root and shoot growth, reduced plant biomass, disrupted water uptake causing nutritional imbalance, and adverse alterations in physiological, biochemical, and molecular processes. These effects collectively lead to diminished plant yield and quality, along with reduced soil fertility. Plants employ various mechanisms to counter Al toxicity under stress conditions, including sequestering Al in vacuoles, exuding organic acids (OAs) like citrate, oxalate, and malate from root tip cells to form Al-complexes, activating antioxidative enzymes, and overexpressing Al-stress regulatory genes. Recent advancements focus on enhancing the exudation of OAs to prevent Al from entering the plant, and developing Al-tolerant varieties. Gene transporter families, such as ATP-Binding Cassette (ABC), Aluminum-activated Malate Transporter (ALMT), Natural resistance-associated macrophage protein (Nramp), Multidrug and Toxic compounds Extrusion (MATE), and aquaporin, play a crucial role in regulating Al toxicity. This comprehensive review examined recent progress in understanding the cytotoxic impact of Al on plants at the cellular and molecular levels. Diverse strategies developed by both plants and scientists to mitigate Al-induced phytotoxicity were discussed. Furthermore, the review explored recent genomic developments, identifying candidate genes responsible for OAs exudation, and delved into genome-mediated breeding initiatives, isolating transgenic and advanced breeding lines to cultivate Al-tolerant plants.
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Affiliation(s)
- Shafeeq Ur Rahman
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Jing-Cheng Han
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Muhammad Ahmad
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Muhammad Nadeem Ashraf
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan
| | | | - Maryam Yousaf
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yuchen Wang
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ghulam Yasin
- Department of Forestry and Range Management, FAS & T, Bahauddin Zakariya University Multan, Multan 60000, Pakistan
| | | | - Khalid Ali Khan
- Unit of Bee Research and Honey Production, Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia; Applied College, King Khalid University, Abha 61413, Saudi Arabia
| | - Zhenjie Du
- Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; Water Environment Factor Risk Assessment Laboratory of Agricultural Products Quality and Safety, Ministry of Agriculture and Rural Affairs, Xinxiang 453002, China.
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Li H, Zhang P, Luo M, Hoque M, Chakraborty S, Brooks B, Li J, Singh S, Forest K, Binney A, Zhang L, Mather D, Ayliffe M. Introgression of the bread wheat D genome encoded Lr34/Yr18/Sr57/Pm38/Ltn1 adult plant resistance gene into Triticum turgidum (durum wheat). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:226. [PMID: 37847385 PMCID: PMC10581953 DOI: 10.1007/s00122-023-04466-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 09/18/2023] [Indexed: 10/18/2023]
Abstract
KEY MESSAGE Lack of function of a D-genome adult plant resistance gene upon introgression into durum wheat. The wheat Lr34/Yr18/Sr57/Pm38/Ltn1 adult plant resistance gene (Lr34), located on chromosome arm 7DS, provides broad spectrum, partial, adult plant resistance to leaf rust, stripe rust, stem rust and powdery mildew. It has been used extensively in hexaploid bread wheat (AABBDD) and conferred durable resistance for many decades. These same diseases also occur on cultivated tetraploid durum wheat and emmer wheat but transfer of D genome sequences to those subspecies is restricted due to very limited intergenomic recombination. Herein we have introgressed the Lr34 gene into chromosome 7A of durum wheat. Durum chromosome substitution line Langdon 7D(7A) was crossed to Cappelli ph1c, a mutant derivative of durum cultivar Cappelli homozygous for a deletion of the chromosome pairing locus Ph1. Screening of BC1F2 plants and their progeny by KASP and PCR markers, 90 K SNP genotyping and cytology identified 7A chromosomes containing small chromosome 7D fragments encoding Lr34. However, in contrast to previous transgenesis experiments in durum wheat, resistance to wheat stripe rust was not observed in either Cappelli/Langdon 7D(7A) or Bansi durum plants carrying this Lr34 encoding segment due to low levels of Lr34 gene expression. KEY MESSAGE
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Affiliation(s)
- Hongyu Li
- CSIRO Agriculture and Food, Clunies Ross Street, GPO Box 1700, Canberra, ACT, 2601, Australia
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Peng Zhang
- Plant Breeding Institute, School of Life and Environmental Sciences, University of Sydney, Cobbitty, NSW, 2570, Australia
| | - Ming Luo
- CSIRO Agriculture and Food, Clunies Ross Street, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Mohammad Hoque
- CSIRO Agriculture and Food, Clunies Ross Street, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Soma Chakraborty
- CSIRO Agriculture and Food, Clunies Ross Street, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Brenton Brooks
- CSIRO Agriculture and Food, Clunies Ross Street, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Jianbo Li
- Plant Breeding Institute, School of Life and Environmental Sciences, University of Sydney, Cobbitty, NSW, 2570, Australia
| | - Smriti Singh
- Plant Breeding Institute, School of Life and Environmental Sciences, University of Sydney, Cobbitty, NSW, 2570, Australia
| | - Kerrie Forest
- Agriculture Victoria, Department of Energy, Environment and Climate Action, AgriBio Centre for AgriBioscience, 5 Ring Rd, Bundoora, VIC, 3083, Australia
| | - Allan Binney
- School of Agriculture, Food & Wine, The University of Adelaide, PMB 1, Glen Osmond, SA, 5064, Australia
| | - Lianquan Zhang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Diane Mather
- School of Agriculture, Food & Wine, The University of Adelaide, PMB 1, Glen Osmond, SA, 5064, Australia
| | - Michael Ayliffe
- CSIRO Agriculture and Food, Clunies Ross Street, GPO Box 1700, Canberra, ACT, 2601, Australia.
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MELLO JCD, TONIAL IB, LUCCHETTA L. Aluminum accumulation in the wheat production chain: a review. FOOD SCIENCE AND TECHNOLOGY 2023. [DOI: 10.1590/fst.116022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Jia Z, Gao P, Yin F, Quilichini TD, Sheng H, Song J, Yang H, Gao J, Chen T, Yang B, Kochian LV, Zou J, Patterson N, Yang Q, Gillmor CS, Datla R, Li Q, Xiang D. Asymmetric gene expression in grain development of reciprocal crosses between tetraploid and hexaploid wheats. Commun Biol 2022; 5:1412. [PMID: 36564439 PMCID: PMC9789062 DOI: 10.1038/s42003-022-04374-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
Production of viable progeny from interploid crosses requires precise regulation of gene expression from maternal and paternal chromosomes, yet the transcripts contributed to hybrid seeds from polyploid parent species have rarely been explored. To investigate the genome-wide maternal and paternal contributions to polyploid grain development, we analyzed the transcriptomes of developing embryos, from zygote to maturity, alongside endosperm in two stages of development, using reciprocal crosses between tetraploid and hexaploid wheats. Reciprocal crosses between species with varied levels of ploidy displayed broad impacts on gene expression, including shifts in alternative splicing events in select crosses, as illustrated by active splicing events, enhanced protein synthesis and chromatin remodeling. Homoeologous gene expression was repressed on the univalent D genome in pentaploids, but this suppression was attenuated in crosses with a higher ploidy maternal parent. Imprinted genes were identified in endosperm and early embryo tissues, supporting predominant maternal effects on early embryogenesis. By systematically investigating the complex transcriptional networks in reciprocal-cross hybrids, this study presents a framework for understanding the genomic incompatibility and transcriptome shock that results from interspecific hybridization and uncovers the transcriptional impacts on hybrid seeds created from agriculturally-relevant polyploid species.
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Affiliation(s)
- Zhen Jia
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China
| | - Peng Gao
- grid.25152.310000 0001 2154 235XGlobal Institute for Food Security, University of Saskatchewan, Saskatoon, SK S7N 4J8 Canada
| | - Feifan Yin
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China ,grid.35155.370000 0004 1790 4137Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, 430070 Wuhan, China
| | - Teagen D. Quilichini
- grid.24433.320000 0004 0449 7958Aquatic and Crop Resource Development, National Research Council Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9 Canada
| | - Huajin Sheng
- grid.25152.310000 0001 2154 235XGlobal Institute for Food Security, University of Saskatchewan, Saskatoon, SK S7N 4J8 Canada
| | - Jingpu Song
- grid.24433.320000 0004 0449 7958Aquatic and Crop Resource Development, National Research Council Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9 Canada
| | - Hui Yang
- grid.24433.320000 0004 0449 7958Aquatic and Crop Resource Development, National Research Council Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9 Canada
| | - Jie Gao
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China
| | - Ting Chen
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China
| | - Bo Yang
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China
| | - Leon V. Kochian
- grid.25152.310000 0001 2154 235XGlobal Institute for Food Security, University of Saskatchewan, Saskatoon, SK S7N 4J8 Canada
| | - Jitao Zou
- grid.24433.320000 0004 0449 7958Aquatic and Crop Resource Development, National Research Council Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9 Canada
| | - Nii Patterson
- grid.24433.320000 0004 0449 7958Aquatic and Crop Resource Development, National Research Council Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9 Canada
| | - Qingyong Yang
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China ,grid.35155.370000 0004 1790 4137Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, 430070 Wuhan, China
| | - C. Stewart Gillmor
- grid.512574.0Langebio, Unidad de Genómica Avanzada, Centro de Investigación y Estudios Avanzados del IPN (CINVESTAV-IPN), Irapuato, Guanajuato, 36821 México
| | - Raju Datla
- grid.25152.310000 0001 2154 235XGlobal Institute for Food Security, University of Saskatchewan, Saskatoon, SK S7N 4J8 Canada
| | - Qiang Li
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China
| | - Daoquan Xiang
- grid.24433.320000 0004 0449 7958Aquatic and Crop Resource Development, National Research Council Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9 Canada
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Dong J, Delhaize E, Hunt J, Armstrong R, Tang C. Elevated CO 2 improves phosphorus nutrition and growth of citrate-secreting wheat when grown under adequate phosphorus supply on an Al 3+ -toxic soil. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:7397-7404. [PMID: 35789487 DOI: 10.1002/jsfa.12108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/16/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Understanding how climate change affects the phosphorus (P) nutrition of crops grown on acid soils is important in optimizing the management of P, and to secure future food production on these soils. This study assessed the impact of elevated CO2 (eCO2 ) on the P nutrition of wheat (Triticum aestivum) grown on Al3+ -toxic and P-deficient soils or in hydroponics. The aluminium-resistant near-isogenic wheat lines EGA-Burke (malate efflux only) and EGA-Burke TaMATE1B (malate and citrate efflux) were grown under ambient (400 μmol mol-1 ) and elevated CO2 (800 μmol mol-1 ) in growth chambers for 4-6 weeks. RESULTS Elevated CO2 enhanced shoot growth and total P uptake of both lines at P rates >250 mg kg-1 , which was associated with improved root biomass allocation and thus increased root growth, but these effects were not apparent at lower P rates. Elevated CO2 decreased specific P uptake (P uptake per unit root length) at P supply >250 mg kg-1 , but did not significantly affect external or internal P requirements. This effect on the specific P uptake was less for EGA-Burke TaMATE1B than for EGA-Burke, possibly due to the increased citrate efflux and decreased Al concentration in root tips of EGA-Burke TaMATE1B. Compared to EGA-Burke, citrate-exuding EGA-Burke TaMATE1B had greater shoot P concentration and greater specific P uptake. CONCLUSION Elevated CO2 improved root growth, and thus total P uptake and plant production of both lines when high P alleviated Al3+ toxicity and improved P nutrition in acid soils. The decreased P uptake efficiency under eCO2 was less for EGA-Burke TaMATE1B than EGA-Burke. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Jinlong Dong
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Bundoora, Victoria, Australia
| | - Emmanuel Delhaize
- Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
| | - James Hunt
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Bundoora, Victoria, Australia
- School of Agriculture and Food, The University of Melbourne, Parkville, Victoria, Australia
| | - Roger Armstrong
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Bundoora, Victoria, Australia
- Agriculture Victoria, Horsham, Victoria, Australia
| | - Caixian Tang
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Bundoora, Victoria, Australia
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Hajiboland R, Panda CK, Lastochkina O, Gavassi MA, Habermann G, Pereira JF. Aluminum Toxicity in Plants: Present and Future. JOURNAL OF PLANT GROWTH REGULATION 2022. [DOI: 10.1007/s00344-022-10866-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 10/26/2022] [Indexed: 06/23/2023]
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Yang G, Deng P, Guo Q, Shi T, Pan W, Cui L, Liu X, Nie X. Population transcriptomic analysis identifies the comprehensive lncRNAs landscape of spike in wheat (Triticum aestivum L.). BMC PLANT BIOLOGY 2022; 22:450. [PMID: 36127641 PMCID: PMC9490906 DOI: 10.1186/s12870-022-03828-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) are emerging as the important regulators involving in growth and development as well as stress response in plants. However, current lncRNA studies were mainly performed at the individual level and the significance of it is not well understood in wheat. RESULTS In this study, the lncRNA landscape of wheat spike was characterized through analysing a total of 186 spike RNA-seq datasets from 93 wheat genotypes. A total of 35,913 lncRNAs as well as 1,619 lncRNA-mRNA pairs comprised of 443 lncRNAs and 464 mRNAs were obtained. Compared to coding genes, these lncRNAs displayed rather low conservation among wheat and other gramineous species. Based on re-sequencing data, the genetic variations of these lncRNA were investigated and obvious genetic bottleneck were found on them during wheat domestication process. Furthermore, 122 lncRNAs were found to act as ceRNA to regulate endogenous competition. Finally, association and co-localization analysis of the candidate lncRNA-mRNA pairs identified 170 lncRNAs and 167 target mRNAs significantly associated with spike-related traits, including lncRNA.127690.1/TraesCS2A02G518500.1 (PMEI) and lncRNA.104854.1/TraesCS6A02G050300.1 (ATG5) associated with heading date and spike length, respectively. CONCLUSIONS This study reported the lncRNA landscape of wheat spike through the population transcriptome analysis, which not only contribute to better understand the wheat evolution from the perspective of lncRNA, but also lay the foundation for revealing roles of lncRNA playing in spike development.
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Affiliation(s)
- Guang Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Pingchuan Deng
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Qifan Guo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Tingrui Shi
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Wenqiu Pan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Licao Cui
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - Xiaoqin Liu
- Peking University Institute of Advanced Agricultural Sciences, Weifang, 261325, Shandong, China.
| | - Xiaojun Nie
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Laugerotte J, Baumann U, Sourdille P. Genetic control of compatibility in crosses between wheat and its wild or cultivated relatives. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:812-832. [PMID: 35114064 PMCID: PMC9055826 DOI: 10.1111/pbi.13784] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/26/2021] [Accepted: 01/20/2022] [Indexed: 05/16/2023]
Abstract
In the recent years, the agricultural world has been progressing towards integrated crop protection, in the context of sustainable and reasoned agriculture to improve food security and quality, and to preserve the environment through reduced uses of water, pesticides, fungicides or fertilisers. For this purpose, one possible issue is to cross-elite varieties widely used in fields for crop productions with exotic or wild genetic resources in order to introduce new diversity for genes or alleles of agronomical interest to accelerate the development of new improved cultivars. However, crossing ability (or crossability) often depends on genetic background of the recipient varieties or of the donor, which hampers a larger use of wild resources in breeding programmes of many crops. In this review, we tried to provide a comprehensive summary of genetic factors controlling crossing ability between Triticeae species with a special focus on the crossability between wheat (Triticum aestivum L.) and rye (Secale cereale), which lead to the creation of Triticale (x Triticosecale Wittm.). We also discussed potential applications of newly identified genes or markers associated with crossability for accelerating wheat and Triticale improvement by application of modern genomics technologies in breeding programmes.
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Affiliation(s)
- Julie Laugerotte
- Genetics, Diversity and Ecophysiology of CerealsINRAEUniversité Clermont‐AuvergneClermont‐FerrandFrance
| | - Ute Baumann
- School of Agriculture, Food and WineUniversity of AdelaideGlen OsmondSouth AustraliaAustralia
| | - Pierre Sourdille
- Genetics, Diversity and Ecophysiology of CerealsINRAEUniversité Clermont‐AuvergneClermont‐FerrandFrance
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The Pathogen-Induced MATE Gene TaPIMA1 Is Required for Defense Responses to Rhizoctonia cerealis in Wheat. Int J Mol Sci 2022; 23:ijms23063377. [PMID: 35328796 PMCID: PMC8950252 DOI: 10.3390/ijms23063377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 12/29/2022] Open
Abstract
The sharp eyespot, mainly caused by the soil-borne fungus Rhizoctonia cerealis, is a devastating disease endangering production of wheat (Triticum aestivum). Multi-Antimicrobial Extrusion (MATE) family genes are widely distributed in plant species, but little is known about MATE functions in wheat disease resistance. In this study, we identified TaPIMA1, a pathogen-induced MATE gene in wheat, from RNA-seq data. TaPIMA1 expression was induced by Rhizoctonia cerealis and was higher in sharp eyespot-resistant wheat genotypes than in susceptible wheat genotypes. Molecular biology assays showed that TaPIMA1 belonged to the MATE family, and the expressed protein could distribute in the cytoplasm and plasma membrane. Virus-Induced Gene Silencing plus disease assessment indicated that knock-down of TaPIMA1 impaired resistance of wheat to sharp eyespot and down-regulated the expression of defense genes (Defensin, PR10, PR1.2, and Chitinase3). Furthermore, TaPIMA1 was rapidly induced by exogenous H2O2 and jasmonate (JA) treatments, which also promoted the expression of pathogenesis-related genes. These results suggested that TaPIMA1 might positively regulate the defense against R. cerealis by up-regulating the expression of defense-associated genes in H2O2 and JA signal pathways. This study sheds light on the role of MATE transporter in wheat defense to Rhizoctonia cerealis and provides a potential gene for improving wheat resistance against sharp eyespot.
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Improvement and Re-Evolution of Tetraploid Wheat for Global Environmental Challenge and Diversity Consumption Demand. Int J Mol Sci 2022; 23:ijms23042206. [PMID: 35216323 PMCID: PMC8878472 DOI: 10.3390/ijms23042206] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 02/01/2023] Open
Abstract
Allotetraploid durum wheat is the second most widely cultivated wheat, following hexaploid bread wheat, and is one of the major protein and calorie sources of the human diet. However, durum wheat is encountered with a severe grain yield bottleneck due to the erosion of genetic diversity stemming from long-term domestication and especially modern breeding programs. The improvement of yield and grain quality of durum wheat is crucial when confronted with the increasing global population, changing climate environments, and the non-ignorable increasing incidence of wheat-related disorders. This review summarized the domestication and evolution process and discussed the durum wheat re-evolution attempts performed by global researchers using diploid einkorn, tetraploid emmer wheat, hexaploid wheat (particularly the D-subgenome), etc. In addition, the re-evolution of durum wheat would be promoted by the genetic enrichment process, which could diversify allelic combinations through enhancing chromosome recombination (pentaploid hybridization or pairing of homologous chromosomes gene Ph mutant line induced homoeologous recombination) and environmental adaptability via alien introgressive genes (wide cross or distant hybridization followed by embryo rescue), and modifying target genes or traits by molecular approaches, such as CRISPR/Cas9 or RNA interference (RNAi). A brief discussion of the future perspectives for exploring germplasm for the modern improvement and re-evolution of durum wheat is included.
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Kawasaki A, Dennis PG, Forstner C, Raghavendra AKH, Mathesius U, Richardson AE, Delhaize E, Gilliham M, Watt M, Ryan PR. Manipulating exudate composition from root apices shapes the microbiome throughout the root system. PLANT PHYSIOLOGY 2021; 187:2279-2295. [PMID: 34618027 PMCID: PMC8644255 DOI: 10.1093/plphys/kiab337] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Certain soil microorganisms can improve plant growth, and practices that encourage their proliferation around the roots can boost production and reduce reliance on agrochemicals. The beneficial effects of the microbial inoculants currently used in agriculture are inconsistent or short-lived because their persistence in soil and on roots is often poor. A complementary approach could use root exudates to recruit beneficial microbes directly from the soil and encourage inoculant proliferation. However, it is unclear whether the release of common organic metabolites can alter the root microbiome in a consistent manner and if so, how those changes vary throughout the whole root system. In this study, we altered the expression of transporters from the ALUMINUM-ACTIVATED MALATE TRANSPORTER and the MULTIDRUG AND TOXIC COMPOUND EXTRUSION families in rice (Oryza sativa L.) and wheat (Triticum aestivum L.) and tested how the subsequent release of their substrates (simple organic anions, including malate, citrate, and γ-amino butyric acid) from root apices affected the root microbiomes. We demonstrate that these exudate compounds, separately and in combination, significantly altered microbiome composition throughout the root system. However, the root type (seminal or nodal), position along the roots (apex or base), and soil type had a greater influence on microbiome structure than the exudates. These results reveal that the root microbiomes of important cereal species can be manipulated by altering the composition of root exudates, and support ongoing attempts to improve plant production by manipulating the root microbiome.
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Affiliation(s)
| | - Paul G Dennis
- Faculty of Sciences, School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Christian Forstner
- Faculty of Sciences, School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Anil K H Raghavendra
- Faculty of Sciences, School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Ulrike Mathesius
- Division of Plant Sciences, Research School of Biology, Australian National University, Canberra, ACT 2601, Australia
| | | | - Emmanuel Delhaize
- CSIRO Agriculture and Food, Canberra, ACT 2601, Australia
- Division of Plant Sciences, Research School of Biology, Australian National University, Canberra, ACT 2601, Australia
| | - Matthew Gilliham
- ARC Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Glen Osmond, SA 5064, Australia
| | - Michelle Watt
- School of BioSciences, University of Melbourne, Parkville, VIC 3010, Australia
| | - Peter R Ryan
- CSIRO Agriculture and Food, Canberra, ACT 2601, Australia
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12
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Mastrangelo AM, Cattivelli L. What Makes Bread and Durum Wheat Different? TRENDS IN PLANT SCIENCE 2021; 26:677-684. [PMID: 33612402 DOI: 10.1016/j.tplants.2021.01.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 01/24/2021] [Accepted: 01/28/2021] [Indexed: 05/18/2023]
Abstract
Durum wheat (tetraploid) and bread wheat (hexaploid) are two closely related species with potentially different adaptation capacities and only a few distinct technological properties that make durum semolina and wheat flour more suitable for pasta, or bread and bakery products, respectively. Interspecific crosses and new breeding technologies now allow researchers to develop wheat lines with durum or bread quality features in either a tetraploid or hexaploid genetic background; such lines combine any technological properties of wheat with the different adaptation capacity expressed by tetraploid and hexaploid wheat genomes. Here, we discuss what makes bread and durum wheat different, consider their environmental adaptation capacity and the major quality-related genes that explain the different end-uses of semolina and bread flour and that could be targets for future wheat breeding programs.
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Affiliation(s)
- Anna M Mastrangelo
- CREA Research Centre for Cereal and Industrial Crops, Foggia, 71122, Italy
| | - Luigi Cattivelli
- CREA Research Centre for Genomics and Bioinformatics, Fiorenzuola d'Arda, 29017, Italy.
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13
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Yang F, Liu Q, Wang Q, Yang N, Li J, Wan H, Liu Z, Yang S, Wang Y, Zhang J, Liu H, Fan X, Ma W, Yang W, Zhou Y. Characterization of the Durum Wheat- Aegilops tauschii 4D(4B) Disomic Substitution Line YL-443 With Superior Characteristics of High Yielding and Stripe Rust Resistance. FRONTIERS IN PLANT SCIENCE 2021; 12:745290. [PMID: 34659315 PMCID: PMC8514839 DOI: 10.3389/fpls.2021.745290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/01/2021] [Indexed: 05/10/2023]
Abstract
Durum wheat is one of the important food and cash crops. The main goals in current breeding programs are improving its low yield potential, kernel characteristics, and lack of resistance or tolerance to some biotic and abiotic stresses. In this study, a nascent synthesized hexaploid wheat Lanmai/AT23 is used as the female parent in crosses with its AB genome donor Lanmai. A tetraploid line YL-443 with supernumerary spikelets and high resistance to stripe rust was selected out from the pentaploid F7 progeny. Somatic analysis using multicolor fluorescence in situ hybridization (mc-FISH) revealed that this line is a disomic substitution line with the 4B chromosome pair of Lanmai replaced by the 4D chromosome pair of Aegilops tauschii AT23. Comparing with Lanmai, YL-443 shows an increase in the number of spikelets and florets per spike by 36.3 and 75.9%, respectively. The stripe rust resistance gene Yr28 carried on the 4D chromosome was fully expressed in the tetraploid background. The present 4D(4B) disomic substitution line YL-443 was distinguished from the previously reported 4D(4B) lines with the 4D chromosomes from Chinese Spring (CS). Our study demonstrated that YL-443 can be used as elite germplasm for durum wheat breeding targeting high yield potential and stripe rust resistance. The Yr28-specific PCR marker and the 4D chromosome-specific KASP markers together with its unique features of pubescent leaf sheath and auricles can be utilized for assisting selection in breeding.
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Affiliation(s)
- Fan Yang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
- Australia-China Joint Centre for Wheat Improvement, Western Australian State Agricultural Biotechnology Centre, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
| | - Qier Liu
- Australia-China Joint Centre for Wheat Improvement, Western Australian State Agricultural Biotechnology Centre, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences (JAAS), Nanjing, China
| | - Qin Wang
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
- Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China, Ministry of Agriculture, Chengdu, China
| | - Ning Yang
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
| | - Jun Li
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
- Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China, Ministry of Agriculture, Chengdu, China
| | - Honshen Wan
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
- Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China, Ministry of Agriculture, Chengdu, China
| | - Zehou Liu
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
- Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China, Ministry of Agriculture, Chengdu, China
| | - Sujie Yang
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
| | - Ying Wang
- Institute of Biotechnology and Nuclear Technology Research, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
| | - Jie Zhang
- Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China, Ministry of Agriculture, Chengdu, China
- Institute of Biotechnology and Nuclear Technology Research, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
| | - Hang Liu
- Australia-China Joint Centre for Wheat Improvement, Western Australian State Agricultural Biotechnology Centre, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Wujun Ma
- Australia-China Joint Centre for Wheat Improvement, Western Australian State Agricultural Biotechnology Centre, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- *Correspondence: Wujun Ma
| | - Wuyun Yang
- Crop Research Institute, Sichuan Academy of Agricultural Sciences (SAAS), Chengdu, China
- Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China, Ministry of Agriculture, Chengdu, China
- Wuyun Yang
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
- Yonghong Zhou
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14
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Svačina R, Sourdille P, Kopecký D, Bartoš J. Chromosome Pairing in Polyploid Grasses. FRONTIERS IN PLANT SCIENCE 2020; 11:1056. [PMID: 32733528 PMCID: PMC7363976 DOI: 10.3389/fpls.2020.01056] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/26/2020] [Indexed: 05/20/2023]
Abstract
Polyploids are species in which three or more sets of chromosomes coexist. Polyploidy frequently occurs in plants and plays a major role in their evolution. Based on their origin, polyploid species can be divided into two groups: autopolyploids and allopolyploids. The autopolyploids arise by multiplication of the chromosome sets from a single species, whereas allopolyploids emerge from the hybridization between distinct species followed or preceded by whole genome duplication, leading to the combination of divergent genomes. Having a polyploid constitution offers some fitness advantages, which could become evolutionarily successful. Nevertheless, polyploid species must develop mechanism(s) that control proper segregation of genetic material during meiosis, and hence, genome stability. Otherwise, the coexistence of more than two copies of the same or similar chromosome sets may lead to multivalent formation during the first meiotic division and subsequent production of aneuploid gametes. In this review, we aim to discuss the pathways leading to the formation of polyploids, the occurrence of polyploidy in the grass family (Poaceae), and mechanisms controlling chromosome associations during meiosis, with special emphasis on wheat.
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Affiliation(s)
- Radim Svačina
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Pierre Sourdille
- INRA, Génétique, Diversité, Ecophysiologie des Céréales, Clermont-Ferrand, France
| | - David Kopecký
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Jan Bartoš
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
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Dong J, Grylls S, Hunt J, Armstrong R, Delhaize E, Tang C. Elevated CO2 (free-air CO2 enrichment) increases grain yield of aluminium-resistant but not aluminium-sensitive wheat (Triticum aestivum) grown in an acid soil. ANNALS OF BOTANY 2019; 123:461-468. [PMID: 30219854 PMCID: PMC6377095 DOI: 10.1093/aob/mcy171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND AND AIMS Soil acidity currently limits root growth and crop production in many regions, and climate change is leading to uncertainties regarding future food supply. However, it is unknown how elevated CO2 (eCO2) affects the performance of wheat crops in acid soils under field conditions. We investigated the effects of eCO2 on plant growth and yield of three pairs of near-isogenic hexaploid wheat lines differing in alleles of aluminium-resistant genes TaALMT1 (conferring root malate efflux) and TaMATE1B (conferring citrate efflux). METHODS Plants were grown until maturity in an acid soil under ambient CO2 (aCO2; 400 µmol mol-1) and eCO2 (550 µmol mol-1) in a soil free-air CO2 enrichment facility (SoilFACE). Growth parameters and grain yields were measured. KEY RESULTS Elevated CO2 increased grain yield of lines carrying TaMATE1B by 22 % and lines carrying only TaALMT1 by 31 %, but did not increase the grain yield of Al3+-sensitive lines. Although eCO2 promoted tiller formation, coarse root length and root biomass of lines carrying TaMATE1B, it did not affect ear number, and it therefore limited yield potential. By contrast, eCO2 decreased or did not change these parameters for lines carrying only TaALMT1, and enhanced biomass allocation to grains thereby resulting in increased grain yield. Despite TaMATE1B being less effective than TaALMT1 at conferring Al3+ resistance based on root growth, the gene promoted grain yield to a similar level to TaALMT1 when the plants were grown in acid soil. Furthermore, TaALMT1 and TaMATE1B were not additive in their effects. CONCLUSIONS As atmospheric CO2 increases, it is critical that both Al3+-resistance genes (particularly TaALMT1) should be maintained in hexaploid wheat germplasm in order for yield increases from CO2 fertilization to be realized in acid soils.
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Affiliation(s)
- Jinlong Dong
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Australia
| | - Stephen Grylls
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Australia
| | - James Hunt
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Australia
| | | | | | - Caixian Tang
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Australia
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16
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Deng X, Sha Y, Lv Z, Wu Y, Zhang A, Wang F, Liu B. The Capacity to Buffer and Sustain Imbalanced D-Subgenome Chromosomes by the BBAA Component of Hexaploid Wheat Is an Evolved Dominant Trait. FRONTIERS IN PLANT SCIENCE 2018; 9:1149. [PMID: 30131821 PMCID: PMC6090280 DOI: 10.3389/fpls.2018.01149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 07/18/2018] [Indexed: 06/08/2023]
Abstract
Successful generation of pentaploid wheat (genome, BBAAD) via interspecific hybridization between tetraploid wheat (BBAA) and hexaploid wheat (BBAADD) holds great promise to mutually exchange desirable traits between the two cultivated wheat species, as well as providing a novel facet for evolutionary studies of polyploid wheat. Taking advantage of the viable and fertile nature of an extracted tetraploid wheat (ETW) with a BBAA genome that is virtually identical with the BBAA component of a hexaploid common wheat, and a synthetic hexaploid wheat, we constructed four pentaploid wheats with several distinct yet complementary features, of which harboring homozygous BBAA subgenomes is a common feature. By using a combined FISH/GISH method that enables diagnosing all individual wheat chromosomes, we precisely karyotyped a larger number of cohorts from the immediate progenies of each of the four pentaploid wheats. We found that the BBAA component of hexaploid common wheat possesses a significantly stronger capacity to buffer and sustain imbalanced D genome chromosomes and appears to harbor more structural chromosome variations than the BBAA genome of tetraploid wheat. We also document that this stronger capacity of the hexaploid BBAA subgenomes behaves as a genetically controlled dominant trait. Our findings bear implications to the known greater than expected level of genetic diversity in, and the remarkable adaptability of, hexaploid common wheat as a staple crop of global significance, as well as in using pentaploidy as intermediates for reciprocal introgression of useful traits between tetraploid and hexaploid wheat cultivars.
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Affiliation(s)
- Xin Deng
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Yan Sha
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Zhenling Lv
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Ying Wu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Ai Zhang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Fang Wang
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, China
| | - Bao Liu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
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17
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Harnessing Genetic Diversity of Wild Gene Pools to Enhance Wheat Crop Production and Sustainability: Challenges and Opportunities. DIVERSITY-BASEL 2017. [DOI: 10.3390/d9040055] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Wild species are extremely rich resources of useful genes not available in the cultivated gene pool. For species providing staple food to mankind, such as the cultivated Triticum species, including hexaploid bread wheat (Triticum aestivum, 6x) and tetraploid durum wheat (T. durum, 4x), widening the genetic base is a priority and primary target to cope with the many challenges that the crop has to face. These include recent climate changes, as well as actual and projected demographic growth, contrasting with reduction of arable land and water reserves. All of these environmental and societal modifications pose major constraints to the required production increase in the wheat crop. A sustainable approach to address this task implies resorting to non-conventional breeding strategies, such as “chromosome engineering”. This is based on cytogenetic methodologies, which ultimately allow for the incorporation into wheat chromosomes of targeted, and ideally small, chromosomal segments from the genome of wild relatives, containing the gene(s) of interest. Chromosome engineering has been successfully applied to introduce into wheat genes/QTL for resistance to biotic and abiotic stresses, quality attributes, and even yield-related traits. In recent years, a substantial upsurge in effective alien gene exploitation for wheat improvement has come from modern technologies, including use of molecular markers, molecular cytogenetic techniques, and sequencing, which have greatly expanded our knowledge and ability to finely manipulate wheat and alien genomes. Examples will be provided of various types of stable introgressions, including pyramiding of different alien genes/QTL, into the background of bread and durum wheat genotypes, representing valuable materials for both species to respond to the needed novelty in current and future breeding programs. Challenging contexts, such as that inherent to the 4x nature of durum wheat when compared to 6x bread wheat, or created by presence of alien genes affecting segregation of wheat-alien recombinant chromosomes, will also be illustrated.
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18
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Rinaldo A, Gilbert B, Boni R, Krattinger SG, Singh D, Park RF, Lagudah E, Ayliffe M. The Lr34 adult plant rust resistance gene provides seedling resistance in durum wheat without senescence. PLANT BIOTECHNOLOGY JOURNAL 2017; 15:894-905. [PMID: 28005310 PMCID: PMC5466443 DOI: 10.1111/pbi.12684] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 12/13/2016] [Accepted: 12/14/2016] [Indexed: 05/18/2023]
Abstract
The hexaploid wheat (Triticum aestivum) adult plant resistance gene, Lr34/Yr18/Sr57/Pm38/Ltn1, provides broad-spectrum resistance to wheat leaf rust (Lr34), stripe rust (Yr18), stem rust (Sr57) and powdery mildew (Pm38) pathogens, and has remained effective in wheat crops for many decades. The partial resistance provided by this gene is only apparent in adult plants and not effective in field-grown seedlings. Lr34 also causes leaf tip necrosis (Ltn1) in mature adult plant leaves when grown under field conditions. This D genome-encoded bread wheat gene was transferred to tetraploid durum wheat (T. turgidum) cultivar Stewart by transformation. Transgenic durum lines were produced with elevated gene expression levels when compared with the endogenous hexaploid gene. Unlike nontransgenic hexaploid and durum control lines, these transgenic plants showed robust seedling resistance to pathogens causing wheat leaf rust, stripe rust and powdery mildew disease. The effectiveness of seedling resistance against each pathogen correlated with the level of transgene expression. No evidence of accelerated leaf necrosis or up-regulation of senescence gene markers was apparent in these seedlings, suggesting senescence is not required for Lr34 resistance, although leaf tip necrosis occurred in mature plant flag leaves. Several abiotic stress-response genes were up-regulated in these seedlings in the absence of rust infection as previously observed in adult plant flag leaves of hexaploid wheat. Increasing day length significantly increased Lr34 seedling resistance. These data demonstrate that expression of a highly durable, broad-spectrum adult plant resistance gene can be modified to provide seedling resistance in durum wheat.
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Affiliation(s)
| | | | - Rainer Boni
- Department of Plant and Microbial BiologyUniversity of ZurichZurichSwitzerland
| | - Simon G. Krattinger
- Department of Plant and Microbial BiologyUniversity of ZurichZurichSwitzerland
| | - Davinder Singh
- Plant Breeding InstituteUniversity of SydneyNarellanNSWAustralia
| | - Robert F. Park
- Plant Breeding InstituteUniversity of SydneyNarellanNSWAustralia
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19
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Padmanaban S, Zhang P, Hare RA, Sutherland MW, Martin A. Pentaploid Wheat Hybrids: Applications, Characterisation, and Challenges. FRONTIERS IN PLANT SCIENCE 2017; 8:358. [PMID: 28367153 PMCID: PMC5355473 DOI: 10.3389/fpls.2017.00358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 03/01/2017] [Indexed: 05/09/2023]
Abstract
Interspecific hybridisation between hexaploid and tetraploid wheat species leads to the development of F1 pentaploid hybrids with unique chromosomal constitutions. Pentaploid hybrids derived from bread wheat (Triticum aestivum L.) and durum wheat (Triticum turgidum spp. durum Desf.) crosses can improve the genetic background of either parent by transferring traits of interest. The genetic variability derived from bread and durum wheat and transferred into pentaploid hybrids has the potential to improve disease resistance, abiotic tolerance, and grain quality, and to enhance agronomic characters. Nonetheless, pentaploid wheat hybrids have not been fully exploited in breeding programs aimed at improving crops. There are several potential barriers for efficient pentaploid wheat production, such as low pollen compatibility, poor seed set, failed seedling establishment, and frequent sterility in F1 hybrids. However, most of the barriers can be overcome by careful selection of the parental genotypes and by employing the higher ploidy level genotype as the maternal parent. In this review, we summarize the current research on pentaploid wheat hybrids and analyze the advantages and pitfalls of current methods used to assess pentaploid-derived lines. Furthermore, we discuss current and potential applications in commercial breeding programs and future directions for research into pentaploid wheat.
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Affiliation(s)
- Sriram Padmanaban
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
| | - Peng Zhang
- Plant Breeding Institute, The University of Sydney, SydneyNSW, Australia
| | - Ray A. Hare
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
| | - Mark W. Sutherland
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
| | - Anke Martin
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
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20
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Aguilera JG, Minozzo JAD, Barichello D, Fogaça CM, da Silva JP, Consoli L, Pereira JF. Alleles of organic acid transporter genes are highly correlated with wheat resistance to acidic soil in field conditions. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2016; 129:1317-1331. [PMID: 27008477 DOI: 10.1007/s00122-016-2705-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 03/06/2016] [Indexed: 06/05/2023]
Abstract
TaALMT1 and TaMATE1B promoter alleles are highly correlated with wheat growth in acidic soil with a high concentration of toxic aluminium. The aluminium (Al(3+)) resistance of 338 wheat genotypes with different geographic origins was correlated with morphological traits and TaALMT1 and TaMATE1B alleles. Both of these genes encode malate and citrate transporters associated with Al(3+) resistance mechanisms in wheat. Based on comparisons with the sensitive and resistant controls, the relative root growth was evaluated in hydroponic experiments and the plant performance was visually accessed in the field. The correlation between Al(3+) tolerance in the hydroponic and field tests was moderate (r = 0.56, P < 0.001). Higher selection pressure was observed in the field because a smaller number of genotypes was classified as resistant. The combination between the six TaALMT1 alleles and the two TaMATE1B promoters allowed the identification of 11 haplotypes that showed a high (r = 0.71, P < 0.001) correlation with Al(3+) resistance in the field, with the TaALMT1 alleles accounting for most of the correlation. The Brazilian wheat genotypes presented the best performance in soil, including eight cultivars with promoters usually associated with Al(3+) resistance and another six genotypes classified as moderately resistant but containing alleles usually associated with Al(3+) sensitivity. Although an increase in favourable alleles was observed over the past few decades, the average Al(3+) resistance in the field was not significantly different from that of older cultivars. The ease identification of the TaALMT1 and TaMATE1B alleles and their higher association with Al(3+) resistance along with the best genotypes identified here may be used for wheat-breeding programmes interested in increasing wheat Al(3+) resistance.
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Affiliation(s)
- Jorge G Aguilera
- Embrapa Trigo, Rodovia BR 285 km 294, Passo Fundo, RS, 99050-970, Brazil
| | - João A D Minozzo
- Embrapa Trigo, Rodovia BR 285 km 294, Passo Fundo, RS, 99050-970, Brazil
- Universidade de Passo Fundo, Rodovia BR 285, Passo Fundo, RS, 99052-900, Brazil
| | - Diliane Barichello
- Embrapa Trigo, Rodovia BR 285 km 294, Passo Fundo, RS, 99050-970, Brazil
- Instituto Agronômico do Paraná, Rodovia Celso Garcia Cid km 375, Londrina, PR, 86047-902, Brazil
| | - Claúdia M Fogaça
- Embrapa Trigo, Rodovia BR 285 km 294, Passo Fundo, RS, 99050-970, Brazil
- Fundação Estadual de Pesquisa Agropecuária, RSC 470 km 170, Veranópolis, RS, 95330-000, Brazil
| | | | - Luciano Consoli
- Embrapa Trigo, Rodovia BR 285 km 294, Passo Fundo, RS, 99050-970, Brazil
| | - Jorge F Pereira
- Embrapa Trigo, Rodovia BR 285 km 294, Passo Fundo, RS, 99050-970, Brazil
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