文献类型： 外文期刊
作者： Yu, Ziyang 1 ; Xiao, Luning 1 ; Su, Fuyu 1 ; Liu, Wei 2 ; Luo, Fuyi 3 ; Han, Ran 4 ; Mu, Yanjun 1 ; Zhang, Wenjing 1 ; Wu, Liru 1 ; Liang, Xiao 1 ; Sun, Nina 2 ; Li, Linzhi 2 ; Ma, Pengtao 1 ;
作者机构： 1.Yantai Univ, Coll Life Sci, Yantai, Peoples R China
2.Yantai Acad Agr Sci, Inst Grain & Oil Crops, Yantai, Peoples R China
3.Dezhou Agr Technol Extens & Seed Ind Ctr, Dezhou, Peoples R China
4.Shandong Acad Agr Sci, Crop Res Inst, Jinan, Peoples R China
关键词： wheat; powdery mildew; Pm2; MAS; diagnostic KASP marker
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Powdery mildew of wheat, caused by Blumeria graminis f. sp. tritici (Bgt), is a devastating disease that seriously reduces yield and quality worldwide. Utilization of plant resistance genes is an attractive and effective strategy for controlling this disease. Among the reported powdery mildew (Pm) resistance genes, Pm2 exhibits a diverse resistance spectrum among its multiple alleles. It has been widely used in China for resistance breeding for powdery mildew. To mine more Pm2 alleles and clarify their distribution, we screened 33 wheat cultivars/breeding lines carrying Pm2 alleles from 641 wheat genotypes using diagnostic and Pm2-linked markers. To further investigate the relationships within the Pm2 alleles, we compared their resistance spectra, polymorphism of marker alleles and gene sequences, and found that they have identical marker alleles and gene sequences but diverse resistance spectra. In addition, the diagnostic kompetitive allele-specific PCR (KASP) marker, YTU-KASP-Pm2, was developed and was shown to detect all the Pm2 alleles in the different genetic backgrounds. These findings provide valuable information for the distribution and rational use of Pm2 alleles, push forward their marker-assisted breeding (MAS), and hence improve the control of wheat powdery mildew.
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