A high-resolution haplotype collection uncovers somatic hybridization, recombination and intercontinental movement in oat crown rust.

ABSTRACT: The population structure and evolution of basidiomycetes like rust fungi are influenced by complex reproductive cycles and dikaryotic life stages where two independent nuclear haplotypes are present in the cell. The ability to alternate between asexual (clonal) and sexual reproduction increases the evolutionary capacity in these species. Furthermore, exchange of intact nuclei (somatic hybridization) in rust fungi can allow for rapid generation of genetic variability outside of the sexual cycle. Puccinia coronata f. sp. avenae (Pca), the causal agent of oat crown rust, is a pathogen of global economic importance that is difficult to control due to rapid breakdown of host genetic resistance. The contribution of sexuality, clonality, and migration to virulence evolution varies across Pca popu

SUBMITTER: Henningsen EC 

PROVIDER: S-EPMC11642970 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature