数字农科院2.0

Virulence Characterization of Puccinia striiformis f. sp. tritici in China in 2020 Using Wheat Yr Single-Gene Lines

文献类型： 外文期刊

作者： Jie Huang;Xingzong Zhang;Wenjing Tan;Yi Wu;Hai Xu;Shuwaner Wang;Sajid Mehmood;Xinli Zhou;Suizhuang Yang;Meinan Wang;Xianming Chen;Wanquan Chen;Taiguo Liu;Xin Li;Chongjing Xia

作者机构：

关键词： pathogen;race identification;resistance genes;stripe rust;Triticum aestivum;virulence diversity

期刊名称： Journal of Fungi

ISSN： 2309-608X

年卷期： 2025 年 11 卷 6 期

页码：

收录情况： SCIE（2025版）

摘要： Wheat stripe (yellow) rust, caused by the fungus Puccinia striiformis f. sp. tritici (Pst), is one of the most threatening wheat diseases worldwide. Monitoring the virulence of Pst population is essential for managing wheat stripe rust. In this study, 18 wheat Yr single-gene lines were used to identify the virulence patterns of 67 isolates collected from 13 provinces in China in 2020, from which 33 Pst races were identified. The frequency of virulence to different Yr genes varied from 1.49% to 97.01%, with 4.48% to Yr1, 26.87% to Yr6, 11.94% to Yr7, 95.52% to Yr8, 19.40% to Yr9, 11.94% to Yr17, 2.99% to Yr24, 35.82% to Yr27, 38.81% to Yr43, 97.01% to Yr44, 8.96% to YrSP, 1.49% to Yr85, 95.52% to YrExp2, and 7.46% to Yr76. None of the isolates were virulent to Yr5, Yr10, Yr15, and Yr32. Among the 33 races, PstCN-062 (with virulence to Yr8, Yr44, and YrExp2) and PstCN-001 (with virulence to Yr8, Yr43, Yr44, and YrExp2) were the prevalent races, with frequencies of 28.36% and 11.94%, respectively. These results provide valuable information for breeding resistant wheat cultivars for controlling stripe rust.

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