Identification of novel sources of partial and incomplete hypersensitive resistance to rust and associated genomic regions in common bean.

ABSTRACT: Common bean (Phaseolus vulgaris) is one of the legume crops most consumed worldwide and bean rust is one of the most severe foliar biotrophic fungal diseases impacting its production. In this work, we searched for new sources of rust resistance (Uromyces appendiculatus) in a representative collection of the Portuguese germplasm, known to have accessions with an admixed genetic background between Mesoamerican and Andean gene pools. We identified six accessions with incomplete hypersensitive resistance and 20 partially resistant accessions of Andean, Mesoamerican, and admixed origin. We detected 11 disease severity-associated single-nucleotide polymorphisms (SNPs) using a genome-wide association approach. Six of the associations were related to partial (incomplete non-hypersensitive) resista

SUBMITTER: Leitao ST 

PROVIDER: S-EPMC10691055 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature