Virulence structure and its genetic diversity analyses of Blumeria graminis f. sp. tritici isolates in China.

ABSTRACT:

Background

Blumeria graminis f. sp. tritici (Bgt), the causal agent of wheat powdery mildew severely affects yield security wheat production in China. Understanding the virulence structure and genetic variations of this pathogen is important for breeding wheat lines resistant to wheat powdery mildew. However, information related to genes controlling resistance remains elusive. This study analyzes the virulence structure and the genetic diversity of pathogenic Bgt populations isolated from northeastern (Liaoning, Heilongjiang) and northwestern (Gansu) China, two representative wheat producing areas, on 37 wheat cultivars each carrying a known powdery mildew resistance (Pm) gene.

Results

Bgt isolates from northeastern China show higher frequencies of virulence genes than popul

SUBMITTER: Wu XX 

PROVIDER: S-EPMC6751876 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature