Molecular Mapping of Yr85 and Comparison with Other Genes for Resistance to Stripe Rust on Wheat Chromosome 1B
文献类型： 外文期刊
作者： Feng, Junyan 1 ; Yao, Fangjie 2 ; Wang, Meinan 2 ; See, Deven R. 2 ; Chen, Xianming 2 ;
作者机构： 1.Sichuan Acad Agr Sci, Biotechnol & Nucl Technol Res Inst, Chengdu 610061, Sichuan, Peoples R China
2.Washington State Univ, Dept Plant Pathol, Pullman, WA 99164 USA
3.Sichuan Acad Agr Sci, Crop Res Inst, Key Lab Wheat Biol & Genet Improvement Southwester, Chengdu 610061, Sichuan, Peoples R China
4.ARS, Wheat Hlth Genet & Qual Res Unit, USDA, Pullman, WA 99164 USA
关键词： Puccinia striiformis f. sp. tritici; resistance gene; wheat
期刊名称：PLANT DISEASE （ 影响因子：4.5； 五年影响因子：5.0 ）
ISSN： 0191-2917
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici, is one of the most serious plant diseases worldwide. Resistant cultivars are the most effective way to control the disease. YrTr1 is an important stripe rust resistance gene that has been used in wheat breeding programs and is represented in the host differential set to identify P. striiformis f. sp. tritici races in the United States. To map YrTr1, AvSYrTr1NIL was backcrossed to its recurrent parent Avocet S (AvS). Seedlings of BC7F2, BC7F3, and BC8F1 populations were tested with YrTr1-avirulent races under controlled conditions, and BC7F2 plants were genotyped using simple sequence repeat (SSR) and single nucleotide polymorphism (SNP) markers. YrTr1 was mapped to the short arm of chromosome 1B using four SSR and seven SNP markers. The genetic distances of YrTr1 from the nearest flanking markers IWA2583 and IWA7480 were 1.8 and 1.3 centimorgans (cM), respectively. DNA amplification of a set of 21 Chinese Spring (CS) nulli-tetrasomic lines and seven CS 1B deletion lines with three SSR markers confirmed the chromosome arm location and further placed the gene in chromosomal bin region 1BS18 (0.5). The gene was determined to be about 7.4 cM proximal to Yr10. Based on multirace response array and chromosomal location, YrTr1 was determined to be different from other permanently named stripe rust resistance genes in chromosome arm 1BS and was named Yr85.
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