Genetic Divergence and Chemotype Diversity in the Fusarium Head Blight Pathogen Fusarium poae.

ABSTRACT: Fusarium head blight is a disease caused by a complex of Fusarium species. F. poae is omnipresent throughout Europe in spite of its low virulence. In this study, we assessed a geographically diverse collection of F. poae isolates for its genetic diversity using AFLP (Amplified Fragment Length Polymorphism). Furthermore, studying the mating type locus and chromosomal insertions, we identified hallmarks of both sexual recombination and clonal spread of successful genotypes in the population. Despite the large genetic variation found, all F. poae isolates possess the nivalenol chemotype based on Tri7 sequence analysis. Nevertheless, Tri gene clusters showed two layers of genetic variability. Firstly, the Tri1 locus was highly variable with mostly synonymous

SUBMITTER: Vanheule A 

PROVIDER: S-EPMC5618188 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature