Details

Autor(en) / Beteiligte

• Zhou, Aihong
• Wang, Jie
• Chen, Xianming
• Xia, Minghao
• Feng, Yaoxuan
• Ji, Fan
• Huang, Lili
• Kang, Zhensheng
• Zhan, Gangming

Titel

Virulence Characterization of Puccinia striiformis f. sp. tritici in China Using the Chinese and Yr Single-Gene Differentials

Ist Teil von

• Plant disease, 2024-03, Vol.108 (3), p.671

Ort / Verlag

United States

Erscheinungsjahr

2024

Quelle

MEDLINE

Beschreibungen/Notizen

• Stripe rust, caused by f. sp. ( ), is one of the most important diseases of wheat. Identifying races is essential for developing resistant cultivars and managing the disease. In this study, 608 isolates collected from China in 2021 were tested with the Chinese set of 19 wheat variety differentials and the set of 18 single-gene differentials. Of the 119 races detected with the Chinese set of differentials, 94 were new. A higher number (149) of races were identified using the single-gene differentials. The frequencies of virulence factors to 17 of the 19 Chinese differential varieties and to 10 of the 18 single-gene differentials were high (>60%). None of the isolates were virulent to the differentials Zhong 4 ( genes unknown) and Album ( ) in the Chinese set and the and lines in the single-gene set of differentials, indicating that these genes or varieties are effective against the population detected in 2021. Using Nei's genetic distance, the 16 provincial populations were clustered into six groups based on the Chinese set and eight groups based on the single-gene set of differentials. In addition, we found that the same races identified using the Chinese differentials could be further differentiated into different races using the single-gene differentials, suggesting a higher differential capability than the Chinese set of differentials. The results provide a scientific basis for monitoring populations and guiding resistance breeding in China.