文献类型： 外文期刊
作者： Jia, Mengjie 1 ; Yang, Lijun 3 ; Zhang, Wei 4 ; Rosewarne, Garry 5 ; Li, Junhui 1 ; Yang, Enian 7 ; Chen, Ling 1 ; Wang, 1 ;
作者机构： 1.Hubei Acad Agr Sci, Hubei Engn & Technol Res Ctr Wheat Wheat Dis Biol, Hubei Key Lab Food Crop Germplasm & Genet Improve, Food Crops Inst, Wuhan 430064, Peoples R China
2.Wuhan Univ, Coll Life Sci, Wuhan 430072, Peoples R China
3.Hubei Acad Agr Sci, Inst Plant Protect & Soil Sci, Wuhan 430064, Peoples R China
4.North Dakota State Univ, Dept Plant Sci, Fargo, ND 58108 USA
5.Agr Victoria, Dept Jobs Precincts & Reg, 110 Natimuk Rd, Horsham, Vic 3400, Australia
6.Int Maize & Wheat Improvement Ctr CIMMYT, Apdo Postal 6-641, Mexico City 06600, DF, Mexico
7.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Peoples R China
8.Yangtze Univ, Hubei Collaborat Innovat Ctr Grain Ind, Jingzhou 434025, Peoples R China
关键词： Marker-trait association; Single nucleotide polymorphism (SNP); Triticum aestivum; Yellow rust
期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）
ISSN： 1471-2229
年卷期： 2020 年 20 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundStripe rust (yellow rust) is a significant disease for bread wheat (Triticum aestivum L.) worldwide. A genome-wide association study was conducted on 240 Chinese wheat cultivars and elite lines genotyped with the wheat 90K single nucleotide polymorphism (SNP) arrays to decipher the genetic architecture of stripe rust resistance in Chinese germplasm.ResultsStripe rust resistance was evaluated at the adult plant stage in Pixian and Xindu in Sichuan province in the 2015-2016 cropping season, and in Wuhan in Hubei province in the 2013-2014, 2016-2017 and 2018-2019 cropping seasons. Twelve stable loci for stripe rust resistance were identified by GWAS using TASSEL and GAPIT software. These loci were distributed on chromosomes 1B, 1D, 2A, 2B, 3A, 3B, 4B (3), 4D, 6D, and 7B and explained 3.6 to 10.3% of the phenotypic variation. Six of the loci corresponded with previously reported genes/QTLs, including Sr2/Yr30/Lr27, while the other six (QYr.hbaas-1BS, QYr.hbaas-2BL, QYr.hbaas-3AL, QYr.hbaas-4BL.3, QYr.hbaas-4DL, and QYr.hbaas-6DS) are probably novel. The results suggest high genetic diversity for stripe rust resistance in this population. The resistance alleles of QYr.hbaas-2AS, QYr.hbaas-3BS, QYr.hbaas-4DL, and QYr.hbaas-7BL were rare in the present panel, indicating their potential use in breeding for stripe rust resistance in China. Eleven penta-primer amplification refractory mutation system (PARMS) markers were developed from SNPs significantly associated with seven mapped QTLs. Twenty-seven genes were predicted for mapped QTLs. Six of them were considered as candidates for their high relative expression levels post-inoculation.ConclusionThe resistant germplasm, mapped QTLs, and PARMS markers developed in this study are resources for enhancing stripe rust resistance in wheat breeding.
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