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Zhao L, Lu Y, Zhang X, Zhao W, Xu X, Wang H, Zhang G, Fritz AK, Fellers J, Guttieri M, Jordan KW, Bai G. Characterization of Quantitative Trait Loci for Leaf Rust Resistance from CI 13227 in Three Winter Wheat Populations. PHYTOPATHOLOGY 2024; 114:1869-1877. [PMID: 38829930 DOI: 10.1094/phyto-03-24-0108-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Leaf rust is a widespread foliar wheat disease causing substantial yield losses worldwide. Slow rusting is "adult plant" resistance that significantly slows epidemic development and thereby reduces yield loss. Wheat accession CI 13227 was previously characterized as having slow-rusting resistance. To validate the quantitative trait loci (QTLs) and develop diagnostic markers for slow rusting resistance in CI 13227, a new population of recombinant inbred lines of CI 13227 × Everest was evaluated for latent period, final severity, area under the disease progress curve, and infection type in greenhouses and genotyped using genotyping-by-sequencing. Four QTLs were identified on chromosome arms 2BL, 2DS, 3BS, and 7BL, explaining 6.82 to 28.45% of the phenotypic variance for these traits. Seven kompetitive allele-specific polymorphism markers previously reported to be linked to the QTLs in two other CI 13227 populations were validated. In addition, the previously reported QLr.hwwg-7AL was remapped to 2BL (renamed QLr.hwwg-2BL) after adding new markers in this study. Phenotypic data showed that the recombinant inbred lines harboring two or three of the QTLs had a significantly longer latent period. QLr.hwwg-2DS on 2DS showed a major effect on all rust resistance traits and was finely mapped to a 2.7-Mb interval by two newly developed flanking markers from exome capture. Three disease-resistance genes and two transporter genes were identified as the putative candidates for QLr.hwwg-2DS. The validated QTLs can be used as slow-rusting resistance resources, and the markers developed in this study will be useful for marker-assisted selection.
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Affiliation(s)
- Lanfei Zhao
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, U.S.A
- National and Shandong Province Key Laboratories of Wheat Improvement, College of Agronomy, Shandong Agriculture University, Taian, Shandong 271018, China
| | - Yue Lu
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, U.S.A
- College of Agronomy, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Xiaocun Zhang
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, U.S.A
- National and Shandong Province Key Laboratories of Wheat Improvement, College of Agronomy, Shandong Agriculture University, Taian, Shandong 271018, China
| | - Wei Zhao
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, U.S.A
- National and Shandong Province Key Laboratories of Wheat Improvement, College of Agronomy, Shandong Agriculture University, Taian, Shandong 271018, China
| | - Xiangyang Xu
- U.S. Department of Agriculture-Agricultural Research Service, Wheat, Peanut, and Other Field Crop Research Unit, Stillwater, OK 74075, U.S.A
| | - Hongliang Wang
- U.S. Department of Agriculture-Agricultural Research Service, Hard Winter Wheat Genetics Research Unit, Manhattan, KS 66506, U.S.A
| | - Guorong Zhang
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, U.S.A
| | - Allan K Fritz
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, U.S.A
| | - John Fellers
- U.S. Department of Agriculture-Agricultural Research Service, Hard Winter Wheat Genetics Research Unit, Manhattan, KS 66506, U.S.A
| | - Mary Guttieri
- U.S. Department of Agriculture-Agricultural Research Service, Hard Winter Wheat Genetics Research Unit, Manhattan, KS 66506, U.S.A
| | - Katherine W Jordan
- U.S. Department of Agriculture-Agricultural Research Service, Hard Winter Wheat Genetics Research Unit, Manhattan, KS 66506, U.S.A
| | - Guihua Bai
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, U.S.A
- U.S. Department of Agriculture-Agricultural Research Service, Hard Winter Wheat Genetics Research Unit, Manhattan, KS 66506, U.S.A
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Dipta B, Sood S, Mangal V, Bhardwaj V, Thakur AK, Kumar V, Singh B. KASP: a high-throughput genotyping system and its applications in major crop plants for biotic and abiotic stress tolerance. Mol Biol Rep 2024; 51:508. [PMID: 38622474 DOI: 10.1007/s11033-024-09455-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 03/18/2024] [Indexed: 04/17/2024]
Abstract
Advances in plant molecular breeding have resulted in the development of new varieties with superior traits, thus improving the crop germplasm. Breeders can screen a large number of accessions without rigorous and time-consuming phenotyping by marker-assisted selection (MAS). Molecular markers are one of the most imperative tools in plant breeding programmes for MAS to develop new cultivars possessing multiple superior traits. Single nucleotide polymorphisms (SNPs) are ideal for MAS due to their low cost, low genotyping error rates, and reproducibility. Kompetitive Allele Specific PCR (KASP) is a globally recognized technology for SNP genotyping. KASP is an allele-specific oligo extension-based PCR assay that uses fluorescence resonance energy transfer (FRET) to detect genetic variations such as SNPs and insertions/deletions (InDels) at a specific locus. Additionally, KASP allows greater flexibility in assay design, which leads to a higher success rate and the capability to genotype a large population. Its versatility and ease of use make it a valuable tool in various fields, including genetics, agriculture, and medical research. KASP has been extensively used in various plant-breeding applications, such as the identification of germplasm resources, quality control (QC) analysis, allele mining, linkage mapping, quantitative trait locus (QTL) mapping, genetic map construction, trait-specific marker development, and MAS. This review provides an overview of the KASP assay and emphasizes its validation in crop improvement related to various biotic and abiotic stress tolerance and quality traits.
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Affiliation(s)
- Bhawna Dipta
- ICAR-Central Potato Research Institute, Bemloe, Shimla, Himachal Pradesh, 171001, India
| | - Salej Sood
- ICAR-Central Potato Research Institute, Bemloe, Shimla, Himachal Pradesh, 171001, India.
| | - Vikas Mangal
- ICAR-Central Potato Research Institute, Bemloe, Shimla, Himachal Pradesh, 171001, India
| | - Vinay Bhardwaj
- ICAR-National Research Centre on Seed Spices, Tabiji, Ajmer, Rajasthan, 305206, India
| | - Ajay Kumar Thakur
- ICAR-Central Potato Research Institute, Bemloe, Shimla, Himachal Pradesh, 171001, India
| | - Vinod Kumar
- ICAR-Central Potato Research Institute, Bemloe, Shimla, Himachal Pradesh, 171001, India
| | - Brajesh Singh
- ICAR-Central Potato Research Institute, Bemloe, Shimla, Himachal Pradesh, 171001, India
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Gao P, Zhou Y, Gebrewahid TW, Zhang P, Wang S, Liu D, Li Z. QTL Mapping for Adult-Plant Resistance to Leaf Rust in Italian Wheat Cultivar Libellula. PLANT DISEASE 2024; 108:13-19. [PMID: 37526485 DOI: 10.1094/pdis-01-23-0105-sr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Wheat leaf rust (Lr), which is caused by Puccinia triticina Eriks. (Pt), is one of the most important wheat diseases affecting wheat production globally. Using resistant wheat cultivars is the most economical and environmentally friendly way to control leaf rust. The Italian wheat cultivar Libellula has demonstrated good resistance to Lr in field studies. To identify the genetic basis of Lr resistance in 'Libellula', 248 F6 recombinant inbred lines from the cross 'Libellula'/'Huixianhong' was phenotyped for Lr severity in seven environments: the 2014/2015, 2016/2017, 2017/2018, and 2018/2019 cropping seasons at Baoding, Hebei Province, and the 2016/2017, 2017/2018, and 2018/2019 crop seasons at Zhoukou, Henan Province. Bulked segregant analysis and simple sequence repeat markers were then used to identify the quantitative trait loci (QTLs) for Lr adult-plant resistance in the population. Six QTLs were consequently detected and designated as QLr.hebau-1AL and QLr.hebau-1AS that were presumed to be new and QLr.hebau-1BL, QLr.hebau-3AL, QLr.hebau-4BL, and QLr.hebau-7DS that were identified at similar physical positions as previously reported QTLs. Based on chromosome positions and molecular marker tests, QLr.hebau-1BL and QLr.hebau-7DS share similar flanking markers with Lr46 and Lr34, respectively. Lr46 and Lr34 are race nonspecific adult plant resistance (APR) genes for leaf rust and stripe rust and powdery mildew. QLr.hebau-4BL showed multiple disease resistance to leaf rust, stripe rust, Fusarium head blight, and powdery mildew. The QTL identified in this study, as well as their closely linked markers, may potentially be used in marker-assisted selection in wheat breeding.
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Affiliation(s)
- Pu Gao
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Yue Zhou
- Baoding University, Baoding 071001, Hebei, China
| | | | - Peipei Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Siman Wang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Daqun Liu
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Zaifeng Li
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, Hebei, China
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Qureshi N, Singh RP, Gonzalez BM, Velazquez-Miranda H, Bhavani S. Genomic Regions Associated with Resistance to Three Rusts in CIMMYT Wheat Line "Mokue#1". Int J Mol Sci 2023; 24:12160. [PMID: 37569535 PMCID: PMC10418946 DOI: 10.3390/ijms241512160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Understanding the genetic basis of rust resistance in elite CIMMYT wheat germplasm enhances breeding and deployment of durable resistance globally. "Mokue#1", released in 2023 in Pakistan as TARNAB Gandum-1, has exhibited high levels of resistance to stripe rust, leaf rust, and stem rust pathotypes present at multiple environments in Mexico and Kenya at different times. To determine the genetic basis of resistance, a F5 recombinant inbred line (RIL) mapping population consisting of 261 lines was developed and phenotyped for multiple years at field sites in Mexico and Kenya under the conditions of artificially created rust epidemics. DArTSeq genotyping was performed, and a linkage map was constructed using 7892 informative polymorphic markers. Composite interval mapping identified three significant and consistent loci contributed by Mokue: QLrYr.cim-1BL and QLrYr.cim-2AS on chromosome 1BL and 2AS, respectively associated with stripe rust and leaf rust resistance, and QLrSr.cim-2DS on chromosome 2DS for leaf rust and stem rust resistance. The QTL on 1BL was confirmed to be the Lr46/Yr29 locus, whereas the QTL on 2AS represented the Yr17/Lr37 region on the 2NS/2AS translocation. The QTL on 2DS was a unique locus conferring leaf rust resistance in Mexico and stem rust resistance in Kenya. In addition to these pleiotropic loci, four minor QTLs were also identified on chromosomes 2DL and 6BS associated with stripe rust, and 3AL and 6AS for stem rust, respectively, using the Kenya disease severity data. Significant decreases in disease severities were also demonstrated due to additive effects of QTLs when present in combinations.
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Affiliation(s)
- Naeela Qureshi
- International Maize and Wheat Improvement Center (CIMMYT), Carretera Mexico-Veracruz Km. 45, El-Batan, Texcoco 56237, Mexico; (N.Q.); (R.P.S.); (B.M.G.); (H.V.-M.)
| | - Ravi Prakash Singh
- International Maize and Wheat Improvement Center (CIMMYT), Carretera Mexico-Veracruz Km. 45, El-Batan, Texcoco 56237, Mexico; (N.Q.); (R.P.S.); (B.M.G.); (H.V.-M.)
| | - Blanca Minerva Gonzalez
- International Maize and Wheat Improvement Center (CIMMYT), Carretera Mexico-Veracruz Km. 45, El-Batan, Texcoco 56237, Mexico; (N.Q.); (R.P.S.); (B.M.G.); (H.V.-M.)
| | - Hedilberto Velazquez-Miranda
- International Maize and Wheat Improvement Center (CIMMYT), Carretera Mexico-Veracruz Km. 45, El-Batan, Texcoco 56237, Mexico; (N.Q.); (R.P.S.); (B.M.G.); (H.V.-M.)
| | - Sridhar Bhavani
- International Maize and Wheat Improvement Center (CIMMYT), Carretera Mexico-Veracruz Km. 45, El-Batan, Texcoco 56237, Mexico; (N.Q.); (R.P.S.); (B.M.G.); (H.V.-M.)
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, United Nations Avenue, Gigiri, Nairobi P.O. Box 1041-00621, Kenya
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Norman M, Bariana H, Bansal U, Periyannan S. The Keys to Controlling Wheat Rusts: Identification and Deployment of Genetic Resistance. PHYTOPATHOLOGY 2023; 113:667-677. [PMID: 36897760 DOI: 10.1094/phyto-02-23-0041-ia] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Rust diseases are among the major constraints for wheat production worldwide due to the emergence and spread of highly destructive races of Puccinia. The most common approach to minimize yield losses due to rust is to use cultivars that are genetically resistant. Modern wheat cultivars, landraces, and wild relatives can contain undiscovered resistance genes, which typically encode kinase or nucleotide-binding site leucine rich repeat (NLR) domain containing receptor proteins. Recent research has shown that these genes can provide either resistance in all growth stages (all-stage resistance; ASR) or specially in later growth stages (adult-plant resistance; APR). ASR genes are pathogen and race-specific, meaning can function against selected races of the Puccinia fungus due to the necessity to recognize specific avirulence molecules in the pathogen. APR genes are either pathogen-specific or multipathogen resistant but often race-nonspecific. Prediction of resistance genes through rust infection screening alone remains complex when more than one resistance gene is present. However, breakthroughs during the past half century such as the single-nucleotide polymorphism-based genotyping techniques and resistance gene isolation strategies like mutagenesis, resistance gene enrichment, and sequencing (MutRenSeq), mutagenesis and chromosome sequencing (MutChromSeq), and association genetics combined with RenSeq (AgRenSeq) enables rapid transfer of resistance from source to modern cultivars. There is a strong need for combining multiple genes for better efficacy and longer-lasting resistance. Hence, techniques like gene cassette creation speeds up the gene combination process, but their widespread adoption and commercial use is limited due to their transgenic nature.
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Affiliation(s)
- Michael Norman
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney Plant Breeding Institute, 107 Cobbitty Road, Cobbitty, NSW 2570, Australia
- Commonwealth Scientific and Industrial Research Organization Agriculture and Food, Canberra, ACT 2601, Australia
| | - Harbans Bariana
- School of Science, Western Sydney University, Bourke Road, Richmond, NSW 2753, Australia
| | - Urmil Bansal
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney Plant Breeding Institute, 107 Cobbitty Road, Cobbitty, NSW 2570, Australia
| | - Sambasivam Periyannan
- School of Agriculture and Environmental Science & Centre for Crop Health, University of Southern Queensland, Toowoomba, Qld 4350, Australia
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Rosa SB, Humphreys G, Langille L, Voldeng H, Henriquez MA, Burt AJ, Randhawa HS, Fetch T, Hiebert CW, Blackwell B, Zegeye T, Cummiskey A, Fortier E, Scheeren PL, Turra C, McCallum B. Characterization of Brazilian spring wheat germplasm and its potential for increasing wheat genetic diversity in Canada. Front Genet 2023; 14:1125940. [PMID: 37007938 PMCID: PMC10063806 DOI: 10.3389/fgene.2023.1125940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023] Open
Abstract
In the present era of climate instability, Canadian wheat production has been frequently affected by abiotic stresses and by dynamic populations of pathogens and pests that are more virulent and aggressive over time. Genetic diversity is fundamental to guarantee sustainable and improved wheat production. In the past, the genetics of Brazilian cultivars, such as Frontana, have been studied by Canadian researchers and consequently, Brazilian germplasm has been used to breed Canadian wheat cultivars. The objective of this study was to characterize a collection of Brazilian germplasm under Canadian growing conditions, including the reaction of the Brazilian germplasm to Canadian isolates/pathogens and to predict the presence of certain genes in an effort to increase genetic diversity, improve genetic gain and resilience of Canadian wheat. Over 100 Brazilian hard red spring wheat cultivars released from 1986 to 2016 were evaluated for their agronomic performance in eastern Canada. Some cultivars showed good adaptability, with several cultivars being superior or statistically equal to the highest yielding Canadian checks. Several Brazilian cultivars had excellent resistance to leaf rust, even though only a few of these tested positive for the presence of either Lr34 or Lr16, two of the most common resistance genes in Canadian wheat. Resistance for stem rust, stripe rust and powdery mildew was variable among the Brazilian cultivars. However, many Brazilian cultivars had high levels of resistance to Canadian and African - Ug99 strains of stem rust. Many Brazilian cultivars had good Fusarium head blight (FHB) resistance, which appears to be derived from Frontana. In contrast FHB resistance in Canadian wheat is largely based on the Chinese variety, Sumai-3. The Brazilian germplasm is a valuable source of semi-dwarf (Rht) genes, and 75% of the Brazilian collection possessed Rht-B1b. Many cultivars in the Brazilian collection were found to be genetically distinct from Canadian wheat, making them a valuable resource to increase the disease resistance and genetic variability in Canada and elsewhere.
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Affiliation(s)
- Silvia Barcellos Rosa
- Centre de recherche sur les grains (CÉROM), Saint-Mathieu-de-Beloeil, QC, Canada
- *Correspondence: Silvia Barcellos Rosa,
| | - Gavin Humphreys
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Linda Langille
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Harvey Voldeng
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Maria Antonia Henriquez
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Andrew James Burt
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Harpinder Singh Randhawa
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada
| | - Tom Fetch
- Brandon Research and Development Centre, Agriculture and Agri-Food Canada, Brandon, MB, Canada
| | - Colin W. Hiebert
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Barbara Blackwell
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Taye Zegeye
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Allan Cummiskey
- Charlottetown Research and Development Center, Agriculture and Agri-Food Canada, Charlottetown, PEI, Canada
| | - Eric Fortier
- Centre de recherche sur les grains (CÉROM), Saint-Mathieu-de-Beloeil, QC, Canada
| | - Pedro Luiz Scheeren
- Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA) Trigo, Passo Fundo, Brazil
| | - Camila Turra
- OR Melhoramento de Sementes, Passo Fundo, Brazil
| | - Brent McCallum
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
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Kaur S, Gill HS, Breiland M, Kolmer JA, Gupta R, Sehgal SK, Gill U. Identification of leaf rust resistance loci in a geographically diverse panel of wheat using genome-wide association analysis. FRONTIERS IN PLANT SCIENCE 2023; 14:1090163. [PMID: 36818858 PMCID: PMC9929074 DOI: 10.3389/fpls.2023.1090163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Leaf rust, caused by Puccinia triticina (Pt) is among the most devastating diseases posing a significant threat to global wheat production. The continuously evolving virulent Pt races in North America calls for exploring new sources of leaf rust resistance. A diversity panel of 365 bread wheat accessions selected from a worldwide population of landraces and cultivars was evaluated at the seedling stage against four Pt races (TDBJQ, TBBGS, MNPSD and, TNBJS). A wide distribution of seedling responses against the four Pt races was observed. Majority of the genotypes displayed a susceptible response with only 28 (9.8%), 59 (13.5%), 45 (12.5%), and 29 (8.1%) wheat accessions exhibiting a highly resistant response to TDBJQ, TBBGS, MNPSD and, TNBJS, respectively. Further, we conducted a high-resolution multi-locus genome-wide association study (GWAS) using a set of 302,524 high-quality single nucleotide polymorphisms (SNPs). The GWAS analysis identified 27 marker-trait associations (MTAs) for leaf rust resistance on different wheat chromosomes of which 20 MTAs were found in the vicinity of known Lr genes, MTAs, or quantitative traits loci (QTLs) identified in previous studies. The remaining seven significant MTAs identified represent genomic regions that harbor potentially novel genes for leaf rust resistance. Furthermore, the candidate gene analysis for the significant MTAs identified various genes of interest that may be involved in disease resistance. The identified resistant lines and SNPs linked to the QTLs in this study will serve as valuable resources in wheat rust resistance breeding programs.
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Affiliation(s)
- Shivreet Kaur
- Department of Plant Pathology, North Dakota State University, Fargo, ND, United States
| | - Harsimardeep S. Gill
- Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD, United States
| | - Matthew Breiland
- Department of Plant Pathology, North Dakota State University, Fargo, ND, United States
| | - James A. Kolmer
- Cereal Disease Laboratory, United States Department of Agriculture-Agricultural Research Service (USDA-ARS), St. Paul, MN, United States
| | - Rajeev Gupta
- Cereal Crops Research Unit, Edward T. Schafer Agricultural Research Center, United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Fargo, ND, United States
| | - Sunish K. Sehgal
- Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD, United States
| | - Upinder Gill
- Department of Plant Pathology, North Dakota State University, Fargo, ND, United States
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Zhao R, Liu B, Wan W, Jiang Z, Chen T, Wang L, Bie T. Mapping and characterization of a novel adult-plant leaf rust resistance gene LrYang16G216 via bulked segregant analysis and conventional linkage method. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:1. [PMID: 36645449 DOI: 10.1007/s00122-023-04270-9] [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: 07/13/2022] [Accepted: 11/07/2022] [Indexed: 06/17/2023]
Abstract
A novel adult-plant leaf rust resistance gene LrYang16G216 on wheat chromosome 6BL was identified and mapped to a 0.59 cM genetic interval by BSA and conventional linkage method. Leaf rust (Puccinia triticina) is one of the most devastating fungal diseases of wheat (Triticum aestivum L.). Discovery and identification of new resistance genes is essential to develop disease-resistant cultivars. An advanced breeding line Yang16G216 was previously identified to confer adult-plant resistance (APR) to leaf rust. In this research, a recombinant inbred line (RIL) population was constructed from the cross between Yang16G216 and a highly susceptible line Yang16M6393, and genotyped with exome capture sequencing and 55 K SNP array. Through bulked segregant analysis (BSA) and genetic linkage mapping, a stable APR gene, designated as LrYang16G216, was detected and mapped to the distal region of chromosome arm 6BL with a genetic interval of 2.8 cM. For further verification, another RIL population derived from the cross between Yang16G216 and a susceptible wheat variety Yangmai 29 was analyzed using the enriched markers in the target interval, and LrYang16G216 was further narrowed to a 0.59 cM genetic interval flanked by the KASP markers Ax109403980 and Ax95083494, corresponding to the physical position 712.34-713.94 Mb in the Chinese Spring reference genome, in which twenty-six disease resistance-related genes were annotated. Based on leaf rust resistance spectrum, mapping data and physical location, LrYang16G216 was identified to be a novel and effective APR gene. The LrYang16G216 with linked markers will be useful for marker-assisted selection in wheat resistance breeding.
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Affiliation(s)
- Renhui Zhao
- Key Laboratory of Wheat Biology and Genetic Improvement On Low & Middle Yangtze River Valley Wheat Region (Ministry of Agriculture), Yangzhou Academy of Agricultural Sciences, Yangzhou, 225007, China
| | - Bingliang Liu
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225007, China
| | - Wentao Wan
- Key Laboratory of Wheat Biology and Genetic Improvement On Low & Middle Yangtze River Valley Wheat Region (Ministry of Agriculture), Yangzhou Academy of Agricultural Sciences, Yangzhou, 225007, China
| | - Zhengning Jiang
- Key Laboratory of Wheat Biology and Genetic Improvement On Low & Middle Yangtze River Valley Wheat Region (Ministry of Agriculture), Yangzhou Academy of Agricultural Sciences, Yangzhou, 225007, China
| | - Tiantian Chen
- Key Laboratory of Wheat Biology and Genetic Improvement On Low & Middle Yangtze River Valley Wheat Region (Ministry of Agriculture), Yangzhou Academy of Agricultural Sciences, Yangzhou, 225007, China
| | - Ling Wang
- Key Laboratory of Wheat Biology and Genetic Improvement On Low & Middle Yangtze River Valley Wheat Region (Ministry of Agriculture), Yangzhou Academy of Agricultural Sciences, Yangzhou, 225007, China
| | - Tongde Bie
- Key Laboratory of Wheat Biology and Genetic Improvement On Low & Middle Yangtze River Valley Wheat Region (Ministry of Agriculture), Yangzhou Academy of Agricultural Sciences, Yangzhou, 225007, China.
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CRISPR-Cas Genome Editing for Insect Pest Stress Management in Crop Plants. STRESSES 2022. [DOI: 10.3390/stresses2040034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Global crop yield and food security are being threatened by phytophagous insects. Innovative methods are required to increase agricultural output while reducing reliance on hazardous synthetic insecticides. Using the revolutionary CRISPR-Cas technology to develop insect-resistant plants appears to be highly efficient at lowering production costs and increasing farm profitability. The genomes of both a model insect, Drosophila melanogaster, and major phytophagous insect genera, viz. Spodoptera, Helicoverpa, Nilaparvata, Locusta, Tribolium, Agrotis, etc., were successfully edited by the CRISPR-Cas toolkits. This new method, however, has the ability to alter an insect’s DNA in order to either induce a gene drive or overcome an insect’s tolerance to certain insecticides. The rapid progress in the methodologies of CRISPR technology and their diverse applications show a high promise in the development of insect-resistant plant varieties or other strategies for the sustainable management of insect pests to ensure food security. This paper reviewed and critically discussed the use of CRISPR-Cas genome-editing technology in long-term insect pest management. The emphasis of this review was on the prospective uses of the CRISPR-Cas system for insect stress management in crop production through the creation of genome-edited crop plants or insects. The potential and the difficulties of using CRISPR-Cas technology to reduce pest stress in crop plants were critically examined and discussed.
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Zhang L, Zhao X, Liu J, Wang X, Gong W, Zhang Q, Liu Y, Yan H, Meng Q, Liu D. Evaluation of the resistance to Chinese predominant races of Puccinia triticina and analysis of effective leaf rust resistance genes in wheat accessions from the U.S. National Plant Germplasm System. FRONTIERS IN PLANT SCIENCE 2022; 13:1054673. [PMID: 36388507 PMCID: PMC9645796 DOI: 10.3389/fpls.2022.1054673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Puccinia triticina, which is the causative agent of wheat leaf rust, is widely spread in China and most other wheat-planting countries around the globe. Cultivating resistant wheat cultivars is the most economical, effective, and environmentally friendly method for controlling leaf rust-caused yield damage. Exploring the source of resistance is very important in wheat resistance breeding programs. In order to explore more effective resistance sources for wheat leaf rust, the resistance of 112 wheat accessions introduced from the U.S. National Plant Germplasm System were identified using a mixture of pathogenic isolates of THTT, THTS, PHTT, THJT and THJS which are the most predominant races in China. As a result, all of these accessions showed high resistance at seedling stage, of which, ninety-nine accessions exhibited resistance at adult plant stage. Eleven molecular markers of eight effective leaf rust resistance genes in China were used to screen the 112 accessions. Seven effective leaf rust resistance genes Lr9, Lr19, Lr24, Lr28, Lr29, Lr38 and Lr45 were detected, except Lr47. Twenty-three accessions had only one of those seven effective leaf rust resistance gene. Eleven accessions carried Lr24+Lr38, and 7 accessions carried Lr9+Lr24+Lr38, Lr24+Lr38+Lr45, Lr24+Lr29+Lr38 and Lr19+Lr38+Lr45 respectively. The remaining seventy-one accessions had none of those eight effective leaf rust resistance genes. This study will provide theoretical guidance for rational utilization of these introduted wheat accessions directly or for breeding the resistant wheat cultivars.
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Affiliation(s)
- Lin Zhang
- College of Plant Protection, Hebei Agricultural University, Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
- School of Landscape and Ecological Engineering, Hebei Engineering University, Handan, China
| | - Xuefang Zhao
- College of Plant Protection, Hebei Agricultural University, Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Jingxian Liu
- College of Agronomy, Shandong Agricultural University, Tai'an, China
| | - Xiaolu Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Shandong Wheat Technology Innovation Center, Jinan, China
- National Engineering Laboratory of Wheat and Maize, Shandong Wheat Technology Innovation Center, Jinan, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North HuangHuai River Valley of Ministry of Agriculture, Shandong Wheat Technology Innovation Center, Jinan, China
| | - Wenping Gong
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Shandong Wheat Technology Innovation Center, Jinan, China
- National Engineering Laboratory of Wheat and Maize, Shandong Wheat Technology Innovation Center, Jinan, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North HuangHuai River Valley of Ministry of Agriculture, Shandong Wheat Technology Innovation Center, Jinan, China
| | - Quanguo Zhang
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
| | - Yuping Liu
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
| | - Hongfei Yan
- College of Plant Protection, Hebei Agricultural University, Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Qingfang Meng
- College of Plant Protection, Hebei Agricultural University, Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Daqun Liu
- College of Plant Protection, Hebei Agricultural University, Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
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11
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Kumar K, Jan I, Saripalli G, Sharma PK, Mir RR, Balyan HS, Gupta PK. An Update on Resistance Genes and Their Use in the Development of Leaf Rust Resistant Cultivars in Wheat. Front Genet 2022; 13:816057. [PMID: 35432483 PMCID: PMC9008719 DOI: 10.3389/fgene.2022.816057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/28/2022] [Indexed: 11/19/2022] Open
Abstract
Wheat is one of the most important cereal crops in the world. The production and productivity of wheat is adversely affected by several diseases including leaf rust, which can cause yield losses, sometimes approaching >50%. In the present mini-review, we provide updated information on (i) all Lr genes including those derived from alien sources and 14 other novel resistance genes; (ii) a list of QTLs identified using interval mapping and MTAs identified using GWAS (particular those reported recently i.e., after 2018) and their association with known Lr genes; (iii) introgression/pyramiding of individual Lr genes in commercial/prominent cultivars from 18 different countries including India. Challenges and future perspectives of breeding for leaf rust resistance are also provided at the end of this mini-review. We believe that the information in this review will prove useful for wheat geneticists/breeders, not only in the development of leaf rust-resistant wheat cultivars, but also in the study of molecular mechanism of leaf rust resistance in wheat.
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Affiliation(s)
- Kuldeep Kumar
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - Irfat Jan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- Division of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Wadura, India
| | - Gautam Saripalli
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - P. K. Sharma
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - Reyazul Rouf Mir
- Division of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Wadura, India
| | - H. S. Balyan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - P. K. Gupta
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- *Correspondence: P. K. Gupta, ,
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12
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Characterization and Use in Wheat Breeding of Leaf Rust Resistance Genes from Durable Varieties. BIOLOGY 2021; 10:biology10111168. [PMID: 34827161 PMCID: PMC8615195 DOI: 10.3390/biology10111168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/20/2021] [Accepted: 10/25/2021] [Indexed: 11/26/2022]
Abstract
Simple Summary Wheat leaf rust is one of the most significant diseases worldwide, incited by a parasitic fungus which infects leaves, affecting grain yield. This pathogen is spread by the wind over large areas through microscopic spores. This huge number of spores favors the selection of virulent forms; therefore, there is a continuous need for new resistance genes to control this disease without fungicides. These resistant genes are naturally found in resistant wheat varieties and can be introduced by standard crosses. In this work, seven resistant genes were introduced into several commercial susceptible varieties. The selection of resistance genes was assisted by DNA markers that are close to these genes on the chromosome. Additionally, the selection of desirable traits from the commercial variety was also assisted by DNA markers to accelerate the process. In field testing, the varieties developed here were resistant to leaf rust, and suitable for commercial use. Abstract Leaf rust is one of the most significant diseases of wheat worldwide. In Argentina, it is one of the main reasons for variety replacement that becomes susceptible after large-scale use. Some varieties showed durable resistance to this disease, including Buck Manantial and Sinvalocho MA. RILs (Recombinant Inbred Lines) were developed for each of these varieties and used in genetics studies to identify components of resistance, both in greenhouse inoculations using leaf rust races, and in field evaluations under natural population infections. In Buck Manantial, the APR gene LrBMP1 was associated with resistance in field tests. In crosses involving Sinvalocho MA, four genes were previously identified and associated with resistance in field testing: APR (Adult Plant Resistance) gene LrSV1, the APR genetic system LrSV2 + LrcSV2 and the ASR (All Stage Resistance) gene LrG6. Using backcrosses, LrBMP1 was introgressed in four commercial susceptible varieties and LrSV1, LrSV2 + LrcSV2 and LrG6 were simultaneously introgressed in three susceptible commercial varieties. The use of molecular markers for recurrent parent background selection allowed us to select resistant lines with more than 80% similarity to commercial varieties. Additionally, progress towards positional cloning of the genetic system LrSV2 + LrcSV2 for leaf rust APR is reported.
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13
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Pang Y, Wu Y, Liu C, Li W, St Amand P, Bernardo A, Wang D, Dong L, Yuan X, Zhang H, Zhao M, Li L, Wang L, He F, Liang Y, Yan Q, Lu Y, Su Y, Jiang H, Wu J, Li A, Kong L, Bai G, Liu S. High-resolution genome-wide association study and genomic prediction for disease resistance and cold tolerance in wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:2857-2873. [PMID: 34075443 DOI: 10.1007/s00122-021-03863-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
High-resolution genome-wide association study (GWAS) facilitated QTL fine mapping and candidate gene identification, and the GWAS based genomic prediction models were highly predictive and valuable in wheat genomic breeding. Wheat is a major staple food crop and provides more than one-fifth of the daily calories and dietary proteins for humans. Genome-wide association study (GWAS) and genomic selection (GS) for wheat stress resistance and tolerance related traits are critical to understanding their genetic architecture for improvement of breeding selection efficiency. However, the insufficient marker density in previous studies limited the utility of GWAS and GS in wheat genomic breeding. Here, we conducted a high-resolution GWAS for wheat leaf rust (LR), yellow rust (YR), powdery mildew (PM), and cold tolerance (CT) by genotyping a panel of 768 wheat cultivars using genotyping-by-sequencing. Among 153 quantitative trait loci (QTLs) identified, 81 QTLs were delimited to ≤ 1.0 Mb intervals with three validated using bi-parental populations. Furthermore, 837 stress resistance-related genes were identified in the QTL regions with 12 showing induced expression by YR and PM pathogens. Genomic prediction using 2608, 4064, 3907, and 2136 pre-selected SNPs based on GWAS and genotypic correlations between the SNPs showed high prediction accuracies of 0.76, 0.73, and 0.78 for resistance to LR, YR, and PM, respectively, and 0.83 for resistance to cold damage. Our study laid a solid foundation for large-scale QTL fine mapping, candidate gene validation and GS in wheat.
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Affiliation(s)
- Yunlong Pang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Yuye Wu
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Chunxia Liu
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Wenhui Li
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Paul St Amand
- Hard Winter Wheat Genetics Research Unit, Manhattan, KS, 66506, USA
| | - Amy Bernardo
- Hard Winter Wheat Genetics Research Unit, Manhattan, KS, 66506, USA
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
| | - Danfeng Wang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Lei Dong
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Xiufang Yuan
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Huirui Zhang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Meng Zhao
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Linzhi Li
- Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Liming Wang
- College of Agriculture, Henan University of Science and Technology, Luoyang, 471000, China
| | - Fang He
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Yunlong Liang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Qiang Yan
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Yue Lu
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Yu Su
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Hongming Jiang
- Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Jiajie Wu
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Anfei Li
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Lingrang Kong
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Guihua Bai
- Hard Winter Wheat Genetics Research Unit, Manhattan, KS, 66506, USA
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
| | - Shubing Liu
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China.
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14
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Gebrewahid TW, Zhang PP, Yao ZJ, Li ZF, Liu DQ. Identification of Leaf Rust Resistance Genes in Bread Wheat Cultivars from Ethiopia. PLANT DISEASE 2020; 104:2354-2361. [PMID: 32697658 DOI: 10.1094/pdis-12-19-2606-re] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Wheat leaf rust, caused by Puccinia triticina (Pt), is a widespread disease of bread wheat worldwide. In the present study, 50 wheat cultivars from Ethiopia and 34 differential lines, mostly near-isogenic lines (NILs) in the background of Thatcher with known resistance genes to leaf rust (Lr), were tested with 14 Pt races in the greenhouse to postulate Lr genes at the seedling stage. Field experiments were also conducted to identify adult plant responses to leaf rust in Baoding in the 2017-2018 and 2018-2019 growing seasons and in Zhoukou in the 2018-2019 growing season. Thirteen Lr genes (Lr1, Lr18, Lr3ka, Lr15, Lr26, Lr20, Lr14a, Lr30, Lr2a, Lr11, Lr34, Lr46, and Lr68) either singly or in combination were found in 39 cultivars. Known Lr genes were not present in the remaining 11 cultivars. Lr1 and Lr46, each in 13 cultivars, and Lr34 in 12 cultivars were the most commonly identified resistance genes. Less frequently identified genes included Lr26 (five cultivars); Lr30 and Lr18 (each present in four cultivars); Lr15, Lr3ka, and Lr2a (each identified in three cultivars); and Lr68 (two cultivars). Evidence for the existence of Lr11, Lr20, and Lr14a (each in one cultivar) was also obtained. Twenty-one cultivars were found to have slow rusting resistance to leaf rust in the field tests. The results should be valuable for cultivar selection with combinations of effective Lr genes and used in breeding new cultivars with improved resistance to leaf rust in Ethiopia and China.
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Affiliation(s)
- Takele Weldu Gebrewahid
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
- College of Agriculture, Aksum University, Shire-Indaslassie, Tigray 314, Ethiopia
| | - Pei-Pei Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
| | - Zhan-Jun Yao
- College of Agronomy, Agricultural University of Hebei/North China Key Laboratory for Crop Germplasm Resources, Baoding, Hebei 071001, China
| | - Zai-Feng Li
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
| | - Da-Qun Liu
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
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Skowrońska R, Tomkowiak A, Nawracała J, Kwiatek MT. Molecular identification of slow rusting resistance Lr46/Yr29 gene locus in selected triticale (× Triticosecale Wittmack) cultivars. J Appl Genet 2020; 61:359-366. [PMID: 32424640 PMCID: PMC8651608 DOI: 10.1007/s13353-020-00562-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/04/2020] [Accepted: 05/12/2020] [Indexed: 12/02/2022]
Abstract
Recently, leaf rust and yellow rust caused by the fungi Puccinia triticina Erikss. and P. striiformis Westend f. sp. tritici Eriks and Henn are diseases of increasing threat in triticale (× Triticosecale Wittmack, AABBRR, 2n = 6x = 42) growing areas. The use of genetic resistance is considered the most economical, effective and environmentally friendly method to control the disease and minimize the use of fungicides. Currently, breeding programs mainly relied on race-specific Lr and Yr genes (R), but new races of the rust fungi frequently defeat resistance. There is a small group of genes that causes partial type of resistance (PR) that are characterized by a slow epidemic build up despite a high infection type. In wheat slow rusting resistance genes displayed longer latent periods, low infection frequencies, smaller pustule size and less spore production. Slow rusting Lr46/Yr29 gene, located on chromosome 1B, is being exploited in many wheat breeding programs. So far, there is no information about slow rusting genes in triticale. This paper showed significant differences between the results of identification of wheat molecular markers Xwmc44 and csLV46G22 associated with Lr46/Yr29 in twenty triticale cultivars, which were characterized by high levels of field resistance to leaf and yellow rust. The csLV46G22res marker has been identified in the following cultivars: Kasyno, Mamut and Puzon. Belcanto and Kasyno showed the highest resistance levels in three-year (2016–2018), leaf and yellow rust severity tests under post-registration variety testing program (PDO). Leaf tip necrosis, a phenotypic trait associated with Lr34/Yr18 and Lr46/Yr29 was observed, among others, to Belcanto and Kasyno, which showed the highest resistance for leaf rust and yellow rust. Kasyno could be considered to have Lr46/Yr29 and can be used as a source of slow rust resistance in breeding and importantly as a component of gene pyramiding in triticale.
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Affiliation(s)
- Roksana Skowrońska
- Department of Genetics and Plant Breeding, Faculty of Agronomy and Bioengineering, Poznań University of Life Sciences, 11 Dojazd Str, 60-632, Poznań, Poland
| | - Agnieszka Tomkowiak
- Department of Genetics and Plant Breeding, Faculty of Agronomy and Bioengineering, Poznań University of Life Sciences, 11 Dojazd Str, 60-632, Poznań, Poland
| | - Jerzy Nawracała
- Department of Genetics and Plant Breeding, Faculty of Agronomy and Bioengineering, Poznań University of Life Sciences, 11 Dojazd Str, 60-632, Poznań, Poland
| | - Michał T Kwiatek
- Department of Genetics and Plant Breeding, Faculty of Agronomy and Bioengineering, Poznań University of Life Sciences, 11 Dojazd Str, 60-632, Poznań, Poland.
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16
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Figlan S, Ntushelo K, Mwadzingeni L, Terefe T, Tsilo TJ, Shimelis H. Breeding Wheat for Durable Leaf Rust Resistance in Southern Africa: Variability, Distribution, Current Control Strategies, Challenges and Future Prospects. FRONTIERS IN PLANT SCIENCE 2020; 11:549. [PMID: 32499800 PMCID: PMC7242648 DOI: 10.3389/fpls.2020.00549] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 04/09/2020] [Indexed: 05/30/2023]
Abstract
Leaf or brown rust of wheat caused by Puccinia triticina (Pt) is one of the most damaging diseases globally. Considerable progress has been made to control leaf rust through crop protection chemicals and host plant resistance breeding in southern Africa. However, frequent changes in the pathogen population still present a major challenge to achieve durable resistance. Disease surveillance and monitoring of the pathogen have revealed the occurrence of similar races across the region, justifying the need for concerted efforts by countries in southern Africa to develop and deploy more efficient and sustainable strategies to manage the disease. Understanding the genetic variability and composition of Pt is a pre-requisite for cultivar release with appropriate resistance gene combinations for sustainable disease management. This review highlights the variability and distribution of the Pt population, and the current control strategies, challenges and future prospects of breeding wheat varieties with durable leaf rust resistance in southern Africa. The importance of regular, collaborative and efficient surveillance of the pathogen and germplasm development across southern Africa is discussed, coupled with the potential of using modern breeding technologies to produce wheat cultivars with durable resistance.
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Affiliation(s)
- Sandiswa Figlan
- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- Agricultural Research Council-Small Grain, Bethlehem, South Africa
- Department of Agriculture and Animal Health, University of South Africa, Florida, South Africa
| | - Khayalethu Ntushelo
- Department of Agriculture and Animal Health, University of South Africa, Florida, South Africa
| | - Learnmore Mwadzingeni
- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- Agricultural Research Council-Small Grain, Bethlehem, South Africa
| | - Tarekegn Terefe
- Agricultural Research Council-Small Grain, Bethlehem, South Africa
| | - Toi J. Tsilo
- Agricultural Research Council-Small Grain, Bethlehem, South Africa
| | - Hussein Shimelis
- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
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17
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Rosa SB, Zanella CM, Hiebert CW, Brûlé-Babel AL, Randhawa HS, Shorter S, Boyd LA, McCallum BD. Genetic Characterization of Leaf and Stripe Rust Resistance in the Brazilian Wheat Cultivar Toropi. PHYTOPATHOLOGY 2019; 109:1760-1768. [PMID: 31282829 DOI: 10.1094/phyto-05-19-0159-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Leaf and stripe rust are major threats to wheat production worldwide. The effective, multiple rust resistances present in the Brazilian cultivar Toropi makes it an excellent choice for a genetic study of rust resistance. Testing of DNA from different seed lots of Toropi with 2,194 polymorphic 90K iSelect single nucleotide polymorphism markers identified significant genetic divergence, with as much as 35% dissimilarity between seed lots. As a result, further work was conducted with a single plant line derived from Toropi variant Toropi-6.4. A double haploid population with 168 lines derived from the cross Toropi-6.4 × Thatcher was phenotyped over multiple years and locations in Canada, New Zealand, and Kenya, with a total of seven field trials undertaken for leaf rust and nine for stripe rust. Genotyping with the 90K iSelect array, simple sequence repeat and Kompetitive allele-specific polymerase chain reaction markers resulted in a genetic map of 3,043 cM, containing 1,208 nonredundant markers. Significant quantitative trait loci (QTL) derived from Toropi-6.4 were identified in multiple environments on chromosomes 1B (QLr.crc-1BL/QYr.crc-1BL), 3B (QLr.crc-3BS), 4B (QYr.crc-4BL), 5A (QLr.crc-5AL and QYr.crc-5AL), and 5D (QLr.crc-5DS). The QTL QLr.crc-1BL/QYr.crc-1BL colocated with the multi-rust resistance locus Lr46/Yr29, while the QTL QLr.crc-5DS located to the Lr78 locus previously found in a wheat backcross population derived from Toropi. Comparisons of QTL combinations showed QLr.crc-1BL to contribute a significantly enhanced leaf rust resistance when combined with QLr.crc-5AL or QLr.crc-5DS, more so than when QLr.crc-5AL and QLr.crc-5DS were combined. A strong additive effect was also seen when the stripe rust resistance QTL QYr.crc-1BL and QYr.crc-5AL were combined.
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Affiliation(s)
- Silvia B Rosa
- CÉROM, Centre de recherché sur les grains, 740 Chemin Trudeau, Saint-Mathieu-de-Beloeil, QC, J3G 0E2, Canada
| | | | - Colin W Hiebert
- Agriculture and Agri-Food Canada, Morden Research Centre, Morden, MB, R6M 1Y5, Canada
| | | | - Harpinder S Randhawa
- Agriculture and Agri-Food Canada, Lethbridge Research Centre, 5403-1 Avenue South, Lethbridge, AB, T1J 4P4, Canada
| | - Stephen Shorter
- Plant and Food Research, Canterbury Agriculture & Science Centre, Gerald Street, Lincoln, New Zealand
| | | | - Brent D McCallum
- Agriculture and Agri-Food Canada, Morden Research Centre, Morden, MB, R6M 1Y5, Canada
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18
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Zhang P, Lan C, Asad MA, Gebrewahid TW, Xia X, He Z, Li Z, Liu D. QTL mapping of adult-plant resistance to leaf rust in the Chinese landraces Pingyuan 50/Mingxian 169 using the wheat 55K SNP array. MOLECULAR BREEDING 2019. [PMID: 0 DOI: 10.1007/s11032-019-1004-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
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19
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Bisht DS, Bhatia V, Bhattacharya R. Improving plant-resistance to insect-pests and pathogens: The new opportunities through targeted genome editing. Semin Cell Dev Biol 2019; 96:65-76. [PMID: 31039395 DOI: 10.1016/j.semcdb.2019.04.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 12/26/2022]
Abstract
The advantages of high input agriculture are fading away due to degenerating soil health and adverse effects of climate change. Safeguarding crop yields in the changing environment and dynamics of pest and pathogens, has posed new challenges to global agriculture. Thus, integration of new technologies in crop improvement has been imperative for achieving the breeding objectives in faster ways. Recently, enormous potential of genome editing through engineered nucleases has been demonstrated in plants. Continuous refinements of the genome editing tools have increased depth and breadth of their applications. So far, genome editing has been demonstrated in more than fifty plant species. These include model species like Arabidopsis, as well as important crops like rice, wheat, maize etc. Particularly, CRISPR/Cas9 based two component genome editing system has been facile with wider applicability. Potential of genome editing has unfurled enormous possibilities for engineering diverse agronomic traits including durable resistance against insect-pests and pathogens. Novel propositions of developing insect and pathogen resistant crops by genome editing include altering the effector-target interaction, knocking out of host-susceptibility genes, engineering synthetic immune receptor eliciting broad spectrum resistance, uncoupling of antagonistic action of defense hormones etc. Alternatively, modification of insect genomes has been used either to create gene drive or to counteract resistance to various insecticides. The distinct advantage of genome editing system is that it can knock out specific target region in the genome without leaving the unwanted vector backbone. In this article, we have reviewed the novel opportunities offered by the genome editing technologies for developing insect and pathogen resistant crop-types, their future prospects and anticipated challenges.
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Affiliation(s)
- Deepak Singh Bisht
- ICAR-National Institute for Plant Biotechnology, Indian Agricultural Research Institute Campus, New Delhi, India
| | - Varnika Bhatia
- Deen Dayal Upadhyaya College, University of Delhi, Delhi, India
| | - Ramcharan Bhattacharya
- ICAR-National Institute for Plant Biotechnology, Indian Agricultural Research Institute Campus, New Delhi, India.
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Kolmer JA, Su Z, Bernardo A, Bai G, Chao S. A Backcross Line of Thatcher Wheat with Adult Plant Leaf Rust Resistance Derived from Duster Wheat has Lr46 and Lr77. PHYTOPATHOLOGY 2019; 109:127-132. [PMID: 30052107 DOI: 10.1094/phyto-06-18-0184-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The widely grown hard red winter wheat cultivar Duster released in 2006 has remained highly resistant to leaf rust caused by Puccinia triticina in the southern Great Plains of the United States. In contrast, many of the winter wheat cultivars in this region are susceptible to leaf rust. The goal of this study was to identify the number and chromosome location of leaf rust resistance genes in a line of Thatcher*2/Duster wheat that was selected for adult plant leaf rust resistance. The Thatcher*2/Duster line was crossed with Thatcher (Tc) and a recombinant line inbred line (RIL) population was advanced to the F6 generation by single-seed descent. The parents and RIL population were phenotyped for leaf rust resistance in three field plot tests and in an adult plant greenhouse test. Single-nucleotide polymorphism (SNP) markers derived from the Illumina Infinium iSelect 90K wheat SNP array, kompetitive allele-specific polymerase chain reaction assays on chromosome 3BL, and a sequence tagged site (STS) marker on chromosome 1BL were used to construct a genetic map of the RIL population. The STS marker csLV46G22 that is linked with resistance gene Lr46 on chromosome 1BL, and SNP marker IWB10344 that is linked with Lr77 on chromosome 3BL, were significantly associated with lower leaf rust severity. Duster has at least three adult plant resistance genes for leaf rust resistance because it was previously determined to also have the adult plant resistance gene Lr34. Duster is a valuable source of durable leaf rust resistance for hard red winter wheat improvement in the Great Plains region.
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Affiliation(s)
- J A Kolmer
- First author: United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Cereal Disease Laboratory, St. Paul, MN 55108; second author: Department of Agronomy, and third author: Department of Plant Pathology, Kansas State University, Manhattan 66506; fourth author: USDA-ARS, Hard Red Winter Wheat Genetics Research, Manhattan KS, 66506; and fifth author: USDA-ARS, Cereal Crops Research Unit, Fargo, ND 58102
| | - Z Su
- First author: United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Cereal Disease Laboratory, St. Paul, MN 55108; second author: Department of Agronomy, and third author: Department of Plant Pathology, Kansas State University, Manhattan 66506; fourth author: USDA-ARS, Hard Red Winter Wheat Genetics Research, Manhattan KS, 66506; and fifth author: USDA-ARS, Cereal Crops Research Unit, Fargo, ND 58102
| | - A Bernardo
- First author: United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Cereal Disease Laboratory, St. Paul, MN 55108; second author: Department of Agronomy, and third author: Department of Plant Pathology, Kansas State University, Manhattan 66506; fourth author: USDA-ARS, Hard Red Winter Wheat Genetics Research, Manhattan KS, 66506; and fifth author: USDA-ARS, Cereal Crops Research Unit, Fargo, ND 58102
| | - G Bai
- First author: United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Cereal Disease Laboratory, St. Paul, MN 55108; second author: Department of Agronomy, and third author: Department of Plant Pathology, Kansas State University, Manhattan 66506; fourth author: USDA-ARS, Hard Red Winter Wheat Genetics Research, Manhattan KS, 66506; and fifth author: USDA-ARS, Cereal Crops Research Unit, Fargo, ND 58102
| | - S Chao
- First author: United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Cereal Disease Laboratory, St. Paul, MN 55108; second author: Department of Agronomy, and third author: Department of Plant Pathology, Kansas State University, Manhattan 66506; fourth author: USDA-ARS, Hard Red Winter Wheat Genetics Research, Manhattan KS, 66506; and fifth author: USDA-ARS, Cereal Crops Research Unit, Fargo, ND 58102
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Kthiri D, Loladze A, N’Diaye A, Nilsen KT, Walkowiak S, Dreisigacker S, Ammar K, Pozniak CJ. Mapping of Genetic Loci Conferring Resistance to Leaf Rust From Three Globally Resistant Durum Wheat Sources. FRONTIERS IN PLANT SCIENCE 2019; 10:1247. [PMID: 31649708 PMCID: PMC6792298 DOI: 10.3389/fpls.2019.01247] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 09/06/2019] [Indexed: 05/21/2023]
Abstract
Genetic resistance in the host plant is the most economical and environmentally friendly strategy for controlling wheat leaf rust, caused by Puccinia triticina Eriks. The durum wheat lines Gaza (Middle East), Arnacoris (France) and Saragolla (Italy) express high levels of resistance to the Mexican races of P. triticina. Three recombinant inbred line (RIL) populations, derived from crosses of each of these resistance sources to the susceptible line ATRED #2, were evaluated for leaf rust reactions at CIMMYT's leaf rust nurseries in Mexico. Genetic analyses of host reactions suggested oligogenic control of resistance in all populations. The F8 RILs from each cross were genotyped using the Illumina iSelect 90K array, and high-density genetic maps were constructed for each population. Using composite interval mapping, a total of seven quantitative trait loci (QTL) that provide resistance to leaf rust were identified. Two QTL designated as QLr.usw-6BS and QLr.usw-6BL were identified on chromosome 6B in Gaza, which explained up to 78.5% and 21.3% of the observed leaf rust severity variance, respectively. A major QTL designated as QLr.usw-7BL was detected on the long arm of chromosome 7B in Arnacoris, which accounted for up to 65.9% of the disease severity variance. Arnacoris also carried a minor QTL on chromosome 1BL, designated as QLr.usw-1BL.1 that explained up to 17.7% of the phenotypic variance. Three QTL conferred leaf rust resistance in Saragolla, namely QLr.usw-2BS, QLr.usw-3B, and QLr.usw-1BL.2, which accounted for up to 42.3, 9.4, and 7.1% of the phenotypic variance, respectively. Markers flanking each QTL were physically mapped against the durum wheat reference sequence and candidate genes involved in disease resistance were identified within the QTL intervals. The QTL identified in this study and their closely linked markers are useful resources for gene pyramiding and breeding for durable leaf rust resistance in durum wheat.
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Affiliation(s)
- Dhouha Kthiri
- Department of Plant Sciences, Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Alexander Loladze
- International Maize and Wheat Improvement Center (CIMMYT), Mexico City, Mexico
| | - Amidou N’Diaye
- Department of Plant Sciences, Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Kirby T. Nilsen
- Department of Plant Sciences, Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Sean Walkowiak
- Department of Plant Sciences, Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | | | - Karim Ammar
- International Maize and Wheat Improvement Center (CIMMYT), Mexico City, Mexico
| | - Curtis J. Pozniak
- Department of Plant Sciences, Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
- *Correspondence: Curtis J. Pozniak,
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Pinto da Silva GB, Zanella CM, Martinelli JA, Chaves MS, Hiebert CW, McCallum BD, Boyd LA. Quantitative Trait Loci Conferring Leaf Rust Resistance in Hexaploid Wheat. PHYTOPATHOLOGY 2018; 108:1344-1354. [PMID: 30211634 DOI: 10.1094/phyto-06-18-0208-rvw] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Leaf rust, caused by the fungal pathogen Puccinia triticina, is a major threat to wheat production in many wheat-growing regions of the world. The introduction of leaf rust resistance genes into elite wheat germplasm is the preferred method of disease control, being environmentally friendly and crucial to sustained wheat production. Consequently, there is considerable value in identifying and characterizing new sources of leaf rust resistance. While many major, qualitative leaf rust resistance genes have been identified in wheat, a growing number of valuable sources of quantitative resistance have been reported. Here we review the progress made in the genetic identification of quantitative trait loci (QTL) for leaf rust resistance detected primarily in field analyses, i.e., adult plant resistance. Over the past 50 years, leaf rust resistance loci have been assigned to genomic locations through chromosome analyses and genetic mapping in biparental mapping populations, studies that represent 79 different wheat leaf rust resistance donor lines. In addition, seven association mapping studies have identified adult plant and seedling leaf rust resistance marker trait associations in over 4,000 wheat genotypes. Adult plant leaf rust resistance QTL have been found on all 21 chromosomes of hexaploid wheat, with the B genome carrying the greatest number of QTL. The group 2 chromosomes are also particularly rich in leaf rust resistance QTL. The A genome has the lowest number of QTL for leaf rust resistance. Copyright © 2018 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license .
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Affiliation(s)
- Gerarda Beatriz Pinto da Silva
- First and third author: Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712. Porto Alegre, RS, Brazil; second and seventh authors: NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK; fourth author: Empresa Brasileira de Pesquisa Agropecuária-Embrapa Clima Temperado, Rodovia BR-392, Km 78, Pelotas, RS, Brazil; and fifth and sixth authors: Cereal Research Centre, Agriculture and Agri-Food Canada, 101 Route 100, Morden, MB R6M 1Y5, Canada
| | - Camila Martini Zanella
- First and third author: Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712. Porto Alegre, RS, Brazil; second and seventh authors: NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK; fourth author: Empresa Brasileira de Pesquisa Agropecuária-Embrapa Clima Temperado, Rodovia BR-392, Km 78, Pelotas, RS, Brazil; and fifth and sixth authors: Cereal Research Centre, Agriculture and Agri-Food Canada, 101 Route 100, Morden, MB R6M 1Y5, Canada
| | - José Antônio Martinelli
- First and third author: Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712. Porto Alegre, RS, Brazil; second and seventh authors: NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK; fourth author: Empresa Brasileira de Pesquisa Agropecuária-Embrapa Clima Temperado, Rodovia BR-392, Km 78, Pelotas, RS, Brazil; and fifth and sixth authors: Cereal Research Centre, Agriculture and Agri-Food Canada, 101 Route 100, Morden, MB R6M 1Y5, Canada
| | - Márcia Soares Chaves
- First and third author: Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712. Porto Alegre, RS, Brazil; second and seventh authors: NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK; fourth author: Empresa Brasileira de Pesquisa Agropecuária-Embrapa Clima Temperado, Rodovia BR-392, Km 78, Pelotas, RS, Brazil; and fifth and sixth authors: Cereal Research Centre, Agriculture and Agri-Food Canada, 101 Route 100, Morden, MB R6M 1Y5, Canada
| | - Colin W Hiebert
- First and third author: Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712. Porto Alegre, RS, Brazil; second and seventh authors: NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK; fourth author: Empresa Brasileira de Pesquisa Agropecuária-Embrapa Clima Temperado, Rodovia BR-392, Km 78, Pelotas, RS, Brazil; and fifth and sixth authors: Cereal Research Centre, Agriculture and Agri-Food Canada, 101 Route 100, Morden, MB R6M 1Y5, Canada
| | - Brent D McCallum
- First and third author: Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712. Porto Alegre, RS, Brazil; second and seventh authors: NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK; fourth author: Empresa Brasileira de Pesquisa Agropecuária-Embrapa Clima Temperado, Rodovia BR-392, Km 78, Pelotas, RS, Brazil; and fifth and sixth authors: Cereal Research Centre, Agriculture and Agri-Food Canada, 101 Route 100, Morden, MB R6M 1Y5, Canada
| | - Lesley Ann Boyd
- First and third author: Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712. Porto Alegre, RS, Brazil; second and seventh authors: NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK; fourth author: Empresa Brasileira de Pesquisa Agropecuária-Embrapa Clima Temperado, Rodovia BR-392, Km 78, Pelotas, RS, Brazil; and fifth and sixth authors: Cereal Research Centre, Agriculture and Agri-Food Canada, 101 Route 100, Morden, MB R6M 1Y5, Canada
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23
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Kolmer JA, Su Z, Bernardo A, Bai G, Chao S. Mapping and characterization of the new adult plant leaf rust resistance gene Lr77 derived from Santa Fe winter wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:1553-1560. [PMID: 29696297 DOI: 10.1007/s00122-018-3097-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/08/2018] [Indexed: 05/09/2023]
Abstract
A new gene for adult plant leaf rust resistance in wheat was mapped to chromosome 3BL. This gene was designated as Lr77. 'Santa Fe' is a hard red winter cultivar that has had long-lasting resistance to the leaf rust fungus, Puccinia triticina. The objective of this study was to determine the chromosome location of the adult plant leaf rust resistance in Santa Fe wheat. A partial backcross line of 'Thatcher' (Tc) wheat with adult plant leaf rust resistance derived from Santa Fe was crossed with Thatcher to develop a Thatcher//Tc*2/Santa Fe F6 recombinant inbred line (RIL) population. The RIL population and parental lines were evaluated for segregation of leaf rust resistance in three field plot tests and in an adult plant greenhouse test. A genetic map of the RIL population was constructed using 90,000 single-nucleotide polymorphism (SNP) markers with the Illumina Infinium iSelect 90K wheat bead array. A significant quantitative trait locus for reduction of leaf rust severity in all four tests was found on chromosome 3BL that segregated as a single adult plant resistance gene. The RILs with the allele from the resistant parent for SNP marker IWB10344 had lower leaf rust severity and a moderately resistant to moderately susceptible response compared to the susceptible RILs and Thatcher. The gene derived from Santa Fe on chromosome 3BL was designated as Lr77. Kompetitive allele-specific polymerase chain reaction assay markers linked to Lr77 on 3BL should be useful for selection of wheat germplasm with this gene.
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Affiliation(s)
- James A Kolmer
- Cereal Disease Laboratory, Agricultural Research Service, United States Department of Agriculture, St. Paul, MN, 55108, USA.
| | - Zhenqi Su
- Department of Agronomy, Kansas State University, Manhattan, KS, 66506, USA
| | - Amy Bernardo
- Department of Agronomy, Kansas State University, Manhattan, KS, 66506, USA
| | - Guihua Bai
- Hard Red Winter Wheat Genetics Research, Agricultural Research Service, United States Department of Agriculture, Manhattan, KS, 66506, USA
| | - Shiaoman Chao
- Cereal Crops Research Unit, Agricultural Research Service, United States Department of Agriculture, Fargo, ND, 58102, USA
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