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Wang H, Wang Y, Liu J, Zhang H, He R, Yang F, Guo Y, Bai B. A Combination of Resistance Genes Confers High and Durable Resistance Against Stripe Rust in Wheat Cultivar Lantian 26. PLANT DISEASE 2024; 108:2550-2557. [PMID: 38587804 DOI: 10.1094/pdis-01-24-0137-re] [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: 04/09/2024]
Abstract
'Lantian 26', a leading elite winter wheat cultivar in Gansu Province since its release in 2010, exhibits high resistance or immunization to stripe rust in the adult-plant stage under a high disease pressure in Longnan (southeastern Gansu). Identifying the resistance genes in 'Lantian 26' could provide a basis for enhanced durability and high levels of resistance in wheat cultivars. Here, a segregating population was developed from a cross between a highly susceptible wheat cultivar Mingxian 169 and the highly stripe rust-resistant 'Lantian 26'. The F2 and F2:3 progenies of the cross were inoculated with multiple prevalent virulent races of stripe rust for adult-plant-stage-resistance evaluation in two different environments. Exon sequence alignment analysis revealed that a stripe rust resistance gene on the 718.4- to 721.2-Mb region of chromosome 7BL, tentatively named as YrLT26, and a cosegregation sequence-tagged site (STS) marker GY17 was developed and validated using the F2:3 population and 103 wheat cultivars. The other two resistance genes, Yr9 and Yr30, were also identified in 'Lantian 26' using molecular markers. Therefore, the key to high and durable resistance to stripe rust at the adult stage is the combination of Yr9, Yr30, and YrLT26 genes in 'Lantian 26'. This could be a considerable strategy for improving the wheat cultivars with effective and durable resistance in the high-pressure region for stripe rust.
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Affiliation(s)
- Hongmei Wang
- Institute of Biotechnology, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
| | - Yamei Wang
- School of Agriculture, Sun Yat-Sen University, Shenzhen 518107, China
| | - Jindong Liu
- Institute of Crop Science, National Wheat Improvement Center, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Huaizhi Zhang
- Institute of Genetics and Developmental Biology, China Academy of Sciences/The Inovative Academy of Seed Design, Beijing 100101, China
| | - Rui He
- Wheat Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
| | - Fangping Yang
- Wheat Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
| | - Ying Guo
- Wheat Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
| | - Bin Bai
- Wheat Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
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Woudstra Y, Tumas H, van Ghelder C, Hung TH, Ilska JJ, Girardi S, A’Hara S, McLean P, Cottrell J, Bohlmann J, Bousquet J, Birol I, Woolliams JA, MacKay JJ. Conifers Concentrate Large Numbers of NLR Immune Receptor Genes on One Chromosome. Genome Biol Evol 2024; 16:evae113. [PMID: 38787537 PMCID: PMC11171428 DOI: 10.1093/gbe/evae113] [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: 11/15/2023] [Revised: 04/23/2024] [Accepted: 05/21/2024] [Indexed: 05/25/2024] Open
Abstract
Nucleotide-binding domain and leucine-rich repeat (NLR) immune receptor genes form a major line of defense in plants, acting in both pathogen recognition and resistance machinery activation. NLRs are reported to form large gene clusters in limber pine (Pinus flexilis), but it is unknown how widespread this genomic architecture may be among the extant species of conifers (Pinophyta). We used comparative genomic analyses to assess patterns in the abundance, diversity, and genomic distribution of NLR genes. Chromosome-level whole genome assemblies and high-density linkage maps in the Pinaceae, Cupressaceae, Taxaceae, and other gymnosperms were scanned for NLR genes using existing and customized pipelines. The discovered genes were mapped across chromosomes and linkage groups and analyzed phylogenetically for evolutionary history. Conifer genomes are characterized by dense clusters of NLR genes, highly localized on one chromosome. These clusters are rich in TNL-encoding genes, which seem to have formed through multiple tandem duplication events. In contrast to angiosperms and nonconiferous gymnosperms, genomic clustering of NLR genes is ubiquitous in conifers. NLR-dense genomic regions are likely to influence a large part of the plant's resistance, informing our understanding of adaptation to biotic stress and the development of genetic resources through breeding.
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Affiliation(s)
| | - Hayley Tumas
- Department of Biology, University of Oxford, Oxford OX1 3RB, UK
| | - Cyril van Ghelder
- INRAE, Université Côte d’Azur, CNRS, ISA, Sophia Antipolis 06903, France
| | - Tin Hang Hung
- Department of Biology, University of Oxford, Oxford OX1 3RB, UK
| | - Joana J Ilska
- The Roslin Institute, Royal (Dick) School of Veterinary Science, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - Sebastien Girardi
- Canada Research Chair in Forest Genomics, Forest Research Centre, Université Laval, Québec, QC, Canada G1V 0A6
- Institute for Systems and Integrative Biology, Université Laval, Québec, QC, Canada GIV 0A6
| | - Stuart A’Hara
- Forest Research, Northern Research Station, Roslin, Midlothian EH25 9SY, UK
| | - Paul McLean
- Forest Research, Northern Research Station, Roslin, Midlothian EH25 9SY, UK
| | - Joan Cottrell
- Forest Research, Northern Research Station, Roslin, Midlothian EH25 9SY, UK
| | - Joerg Bohlmann
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada V6T 1Z4
| | - Jean Bousquet
- Canada Research Chair in Forest Genomics, Forest Research Centre, Université Laval, Québec, QC, Canada G1V 0A6
| | - Inanc Birol
- Canada's Michael Smith Genome Sciences Centre, Vancouver, BC, Canada V5Z 4S6
| | - John A Woolliams
- The Roslin Institute, Royal (Dick) School of Veterinary Science, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - John J MacKay
- Department of Biology, University of Oxford, Oxford OX1 3RB, UK
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Zhang G, Liu W, Wang L, Cheng X, Tian X, Du Z, Kang Z, Zhao J. Evaluation of the Potential Risk of the Emerging Yr5-Virulent Races of Puccinia striiformis f. sp. tritici to 165 Chinese Wheat Cultivars. PLANT DISEASE 2022; 106:1867-1874. [PMID: 35021876 DOI: 10.1094/pdis-11-21-2622-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In 2017, a new race (TSA-6) of the wheat stripe rust pathogen, Puccinia striiformis f. sp. tritici, virulent to resistance gene Yr5, was detected in China. However, whether Chinese wheat cultivars are resistant to the new race was unknown. In this study, two isolates (TSA-6 and TSA-9) with virulence to Yr5 were tested on other wheat Yr gene lines for their avirulence and virulence patterns and used, together with prevalent races CYR32 and CYR34 without the Yr5 virulence, to evaluate 165 major Chinese wheat cultivars for their reactions. Isolates TSA-6 and TSA-9 had similar but different virulence spectra and therefore should be considered two different races. Their avirulence and virulence patterns were remarkably different from that of CYR34 but quite similar to that of CYR32. Of the 165 wheat cultivars, 21 had all-stage resistance to TSA-6, 34 to TSA-9, and 20 to both races. Adult plant resistance (APR) was detected in 35 cultivars to TSA-6 and 27 to TSA-9, but only three cultivars showed APR to both new races. Slow rusting resistance was observed in 24 cultivars to TSA-6 and 33 to TSA-9. Analysis of variance of disease index indicated a significant difference between cultivars but not between the four races. Based on the molecular marker data, a low percentage of wheat cultivars carried Yr5, Yr7, Yr10, Yr15, Yr26, or YrSP. Because TSA-6 and TSA-9 can be a serious threat to wheat production in China, continual monitoring of TSA-6, TSA-9, and other races is needed.
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Affiliation(s)
- Gensheng Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wei Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Lin Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiangrui Cheng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaxia Tian
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zhimin Du
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jie Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
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Kokhmetova A, Rsaliyev A, Malysheva A, Atishova M, Kumarbayeva M, Keishilov Z. Identification of Stripe Rust Resistance Genes in Common Wheat Cultivars and Breeding Lines from Kazakhstan. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10112303. [PMID: 34834666 PMCID: PMC8619625 DOI: 10.3390/plants10112303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/20/2021] [Accepted: 10/24/2021] [Indexed: 05/18/2023]
Abstract
Stripe (yellow) rust, caused by Puccinia striiformis f.sp. tritici (Pst), is a fungal disease that presents one of the most serious threats to the wheat crops, causing severe yield losses worldwide, including Kazakhstan. The objectives of this study were to: (1) evaluate a winter wheat collection for stripe rust resistance during an adult plant growth stage, (2) identify the presence of selected Yr genes using linked molecular markers in wheat germplasm, (3) identify potentially useful resistant wheat genotypes among leading cultivars and advanced breeding lines. This study evaluated 70 winter wheat genotypes for stripe rust resistance. According to the field reactions, 42 entries (60%) had R or MR reactions including 27 breeding lines (38.6%) and 15 (21.4%) cultivars. Twenty-eight breeding lines/cultivars (40.0%) were susceptible in both years. According to the average coefficient of infection value (ACI) six genotypes were regarded as possessing high level of adult plant resistance. Cultivars/lines carrying Yr10 alone or in combination with other Yr resistance genes provided resistance to stripe rust. Eleven breeding lines showed <5% disease severity in both years. Linked marker analysis revealed the presence of several gene and gene complexes (Yr5, Yr10, Yr15, Yr17/Lr37/Sr38 and Yr18/Lr34). Among a collection of 70 winter wheat breeding lines and cultivars produced in Kazakhstan three stripe rust resistance genes (Yr10, Yr5 and Yr15) demonstrated high frequency occurrence (31.4%, 14.0% and 7.0%, respectively). The most abundant was gene Yr10 identified in 22 genotypes. It was followed by the Yr5 gene, which conferred resistance in 14 lines (20%) and Yr18 gene-11 lines (15.7%). Yr15 was identified in 7 genotypes. Yr17/Lr37/Sr38 gene complex was found in 2 entries. Among 70 evaluated germplasm sources, 42 disease resistant entries are potentially useful resistant wheat genotypes. These carriers of different Yr genes can be used directly in breeding programs to improve stripe rust resistance of winter wheat. Marker-assisted selection can be efficiently applied to develop wheat cultivars with effective gene combinations that would directly assist in developing durable resistance in Kazakhstan.
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Affiliation(s)
- Alma Kokhmetova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (A.M.); (M.A.); (M.K.); (Z.K.)
- Correspondence: ; Tel.: +7-727-394-75-52
| | - Aralbek Rsaliyev
- Research Institute of Biological Safety Problems, Gvardeiskiy 080409, Kazakhstan;
| | - Angelina Malysheva
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (A.M.); (M.A.); (M.K.); (Z.K.)
| | - Makpal Atishova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (A.M.); (M.A.); (M.K.); (Z.K.)
| | - Madina Kumarbayeva
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (A.M.); (M.A.); (M.K.); (Z.K.)
| | - Zhenis Keishilov
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (A.M.); (M.A.); (M.K.); (Z.K.)
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Pirko YV, Karelov AV, Kozub NO, Ivashchuk BV, Sozinov IA, Topchii TV, Morgun VV, Blume YB. Identification of Genes for Resistance to Yellow Rust of Asian Origin in Winter Wheat Cultivars and Lines. CYTOL GENET+ 2021. [DOI: 10.3103/s0095452721030075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhang D, Zhu K, Dong L, Liang Y, Li G, Fang T, Guo G, Wu Q, Xie J, Chen Y, Lu P, Li M, Zhang H, Wang Z, Zhang Y, Sun Q, Liu Z. Wheat powdery mildew resistance gene Pm64 derived from wild emmer (Triticum turgidum var. dicoccoides) is tightly linked in repulsion with stripe rust resistance gene Yr5. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.cj.2019.03.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Evaluating stripe rust resistance in Indian wheat genotypes and breeding lines using molecular markers. C R Biol 2019; 342:154-174. [PMID: 31239197 DOI: 10.1016/j.crvi.2019.04.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 11/21/2022]
Abstract
Stripe rust (yellow rust), caused by Puccinia striiformis f. sp. tritici (Pst), is a serious disease of wheat worldwide, including India. Growing resistant cultivars is the most cost-effective and eco-friendly approach to manage the disease. In this study, 70 publically available molecular markers were used to identify the distribution of 35 Yr genes in 68 wheat genotypes. Out of 35 Yr genes, 25 genes amplified the loci associated with Yr genes. Of the 35, 18 were all-stage resistance ASR (All-stage resistance) genes and 7 (Yr16, Yr18, Yr29, Yr30, Yr36, Yr46 &Yr59) were APR (Adult-plant resistance) genes. In the field tests, evaluation for stripe rust was carried out under artificial inoculation of Pst. Fifty-three wheat genotypes were found resistant to yellow rust (ITs 0), accounting for 77.94% of total entries. Coefficients of infection ranged from 0 to 60 among all wheat genotypes. Two genotypes (VL 1099 & VL 3002) were identified with maximum 15 Yr genes followed by 14 genes in VL 3010 and HI8759, respectively. Maximum number of all-stage resistance genes were identified in RKD 292 (11) followed by ten genes in DBW 216, WH 1184 and VL 3002. Maximum number of adult-plant resistance gene was identified in VL 3009 (6), HI 8759 (5) and Lassik (4) respectively. Genes Yr26 (69.2%), Yr2 (69.1%), Yr64 (61.7%), Yr24 (58.9%), Yr7 (52.9%), Yr10 (50%) and Yr 48 (48.5%) showed high frequency among selected wheat genotypes, while Yr9 (2.94%), Yr36 (2.94%), Yr60 (1.47%) and Yr32 (8.8%) were least frequent in wheat genotypes. In future breeding programs, race specific genes and non-race specific genes should be utilised to pyramid with other effective genes to develop improved wheat cultivars with high-level and durable resistance to stripe rust. Proper deployment of Yr genes and utilizing the positive interactions will be helpful for resistance breeding in wheat.
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Klindworth DL, Saini J, Long Y, Rouse MN, Faris JD, Jin Y, Xu SS. Physical mapping of DNA markers linked to stem rust resistance gene Sr47 in durum wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2017; 130:1135-1154. [PMID: 28286900 DOI: 10.1007/s00122-017-2875-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 02/07/2017] [Indexed: 06/06/2023]
Abstract
Markers linked to stem rust resistance gene Sr47 were physically mapped in three small Aegilops speltoides chromosomal bins. Five markers, including two PCR-based SNP markers, were validated for marker-assisted selection. In durum wheat (Triticum turgidum subsp. durum), the gene Sr47 derived from Aegilops speltoides conditions resistance to race TTKSK (Ug99) of the stem rust pathogen (Puccinia graminis f. sp. tritici). Sr47 is carried on small interstitial translocation chromosomes (Ti2BL-2SL-2BL·2BS) in which the Ae. speltoides chromosome 2S segments are divided into four bins in genetic stocks RWG35, RWG36, and RWG37. Our objective was to physically map molecular markers to bins and to determine if any of the molecular markers would be useful in marker-assisted selection (MAS). Durum cultivar Joppa was used as the recurrent parent to produce three BC2F2 populations. Each BC2F2 plant was genotyped with markers to detect the segment carrying Sr47, and stem rust testing of BC2F3 progeny with race TTKSK confirmed the genotyping. Forty-nine markers from published sources, four new SSR markers, and five new STARP (semi-thermal asymmetric reverse PCR) markers, were evaluated in BC2F2 populations for assignment of markers to bins. Sr47 was mapped to bin 3 along with 13 markers. No markers were assigned to bin 1; however, 7 and 13 markers were assigned to bins 2 and 4, respectively. Markers Xrwgs38a, Xmag1729, Xwmc41, Xtnac3119, Xrwgsnp1, and Xrwgsnp4 were found to be useful for MAS of Sr47. However, STARP markers Xrwgsnp1 and Xrwgsnp4 can be used in gel-free systems, and are the preferred markers for high-throughput MAS. The physical mapping data from this study will also be useful for pyramiding Sr47 with other Sr genes on chromosome 2B.
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Affiliation(s)
- Daryl L Klindworth
- USDA-ARS, Northern Crop Science Laboratory, Cereal Crops Research Unit, Red River Valley Agricultural Research Center, 1605 Albrecht Blvd. North, Fargo, ND, 58102-2765, USA
| | - Jyoti Saini
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - Yunming Long
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - Matthew N Rouse
- USDA-ARS, Cereal Disease Laboratory, and Department of Plant Pathology, University of Minnesota, St. Paul, MN, 55108, USA
| | - Justin D Faris
- USDA-ARS, Northern Crop Science Laboratory, Cereal Crops Research Unit, Red River Valley Agricultural Research Center, 1605 Albrecht Blvd. North, Fargo, ND, 58102-2765, USA
| | - Yue Jin
- USDA-ARS, Cereal Disease Laboratory, and Department of Plant Pathology, University of Minnesota, St. Paul, MN, 55108, USA
| | - Steven S Xu
- USDA-ARS, Northern Crop Science Laboratory, Cereal Crops Research Unit, Red River Valley Agricultural Research Center, 1605 Albrecht Blvd. North, Fargo, ND, 58102-2765, USA.
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Begum S, Iqbal M, Ahmed I, Fayyaz M, Shahzad A, Ali GM. Allelic variation at loci controlling stripe rust resistance in spring wheat. J Genet 2014; 93:579-86. [PMID: 25189263 DOI: 10.1007/s12041-014-0413-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sania Begum
- Department of Plant Genomics and Biotechnology, PARC Institute of Advanced Studies in Agriculture, National Agricultural Research Centre, Islamabad 45500, Pakistan.
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Rohozková J, Šebela M, Navrátil M. P1 peptidase of Pea seed-borne mosaic virus contains non-canonical C2H2 zinc finger and may act in a truncated form. ACTA ACUST UNITED AC 2014. [DOI: 10.7243/2050-2389-3-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Xu LS, Wang MN, Cheng P, Kang ZS, Hulbert SH, Chen XM. Molecular mapping of Yr53, a new gene for stripe rust resistance in durum wheat accession PI 480148 and its transfer to common wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2013; 126:523-33. [PMID: 23090143 DOI: 10.1007/s00122-012-1998-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 10/06/2012] [Indexed: 05/22/2023]
Abstract
Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most damaging diseases of wheat worldwide. It is essential to identify new genes for effective resistance against the disease. Durum wheat PI 480148, originally from Ethiopia, was resistant in all seedling tests with several predominant Pst races in the US under controlled greenhouse conditions and at multiple locations subject to natural infection for several years. To map the resistance gene(s) and to transfer it to common wheat, a cross was made between PI 480148 and susceptible common wheat genotype Avocet S (AvS). Resistant F(3) plants with 42 chromosomes were selected cytologically and by testing with Pst race PST-100. A total of 157 F(4) plants from a single F(3) plant with 2n = 42 tested with PST-100 segregated in a 3 resistant: 1 susceptible ratio, indicating that a single dominant gene from PI 480148 conferred resistance. Using the F(3:4) population and the resistance gene-analog polymorphism (RGAP) and simple sequence repeat (SSR) markers, the gene was mapped to the long arm of chromosome 2B. SSR marker Xwmc441 and RGAP marker XLRRrev/NLRRrev ( 350 ) flanked the resistance gene by 5.6 and 2.7 cM, respectively. The effective resistance of the gene to an Australian Pst isolate virulent to Yr5, which is also located on 2BL and confers resistance to all US Pst races, together with an allelism test of the two genes, indicated that the gene from PI 480148 is different from Yr5 and should be a new and useful gene for resistance to stripe rust. Resistant common wheat lines with plant types similar to AvS were selected for use in breeding programs.
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Affiliation(s)
- L S Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
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YIN GH, LI GY, HE ZH, LIU JJ, WANG H, XIA XC. Molecular Mapping of Powdery Mildew Resistance Gene in Wheat Cultivar Jimai 22. ZUOWU XUEBAO 2009. [DOI: 10.3724/sp.j.1006.2009.01425] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Mapping of Wheat Stripe Rust Resistance Gene YrZH84 with RGAP Markers and Its Application. ZUOWU XUEBAO 2009. [DOI: 10.3724/sp.j.1006.2009.01274] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Coram TE, Settles ML, Wang M, Chen X. Surveying expression level polymorphism and single-feature polymorphism in near-isogenic wheat lines differing for the Yr5 stripe rust resistance locus. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2008; 117:401-11. [PMID: 18470504 DOI: 10.1007/s00122-008-0784-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Accepted: 04/26/2008] [Indexed: 05/17/2023]
Abstract
DNA polymorphisms are valuable for several applications including genotyping, molecular mapping and marker-assisted selection. The 55 K Affymetrix Wheat GeneChip was used to survey expression level polymorphisms (ELPs) and single-feature polymorphisms (SFPs) between two near-isogenic wheat genotypes (BC(7):F(4)) that differ for the Yr5 stripe rust resistance locus, with the objective of developing genetic markers linked to Yr5. Ninety-one probe sets showing ELPs and 118 SFP-containing probe sets were identified between isolines, of which just nine ELP probe sets also contained SFPs. The proportion of the transcriptome estimated to be variable between isolines from this analysis was 0.30% for the ELPs and 0.39% for the SFPs, which was highly similar to the theoretical genome difference between isolines of ~0.39%. Using wheat-rice synteny, both ELPs and SFPs mainly clustered on long arms of rice chromosomes four and seven, which are syntenous to wheat chromosomes 2L (Yr5 locus) and 2S, respectively. The strong physical correlation between the two types of polymorphism indicated that the ELPs may be regulated by cis-acting DNA polymorphisms. Twenty SFPs homologous to rice 4L were used to develop additional genetic markers for Yr5. Physical mapping of the probe sets containing SFPs to wheat chromosomes identified nine on the target chromosome 2BL, thus wheat-rice synteny greatly enhanced the selection of SFPs that were located on the desired wheat chromosome. Of these nine, four were converted into polymorphic cleaved amplified polymorphic sequence (CAPS) markers between Yr5 and yr5 isolines, and one was mapped within 5.3 cM of the Yr5 locus. This study represents the first array-based polymorphism survey in near-isogenic genotypes, and the results are applied to an agriculturally important trait.
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Affiliation(s)
- Tristan E Coram
- Wheat Genetics, Quality, Physiology and Disease Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Pullman, WA 99163, USA.
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