Discriminant haplotypes of avirulence genes of Phytophthora sojae lead to a molecular assay to predict phenotypes.

ABSTRACT: The soybean-Phytophthora sojae interaction operates on a gene-for-gene relationship, where the product of a resistance gene (Rps) in the host recognizes that of an avirulence gene (Avr) in the pathogen to generate an incompatible reaction. To exploit this form of resistance, one must match with precision the appropriate Rps gene with the corresponding Avr gene. Currently, this association is evaluated by phenotyping assays that are labour-intensive and often imprecise. To circumvent this limitation, we sought to develop a molecular assay that would reveal the avirulence allele of the seven main Avr genes (Avr1a, Avr1b, Avr1c, Avr1d, Avr1k, Avr3a, and Avr6) in order to diagnose with precision the pathotypes of P. sojae isolates. For this purpose, we analysed the genomic regions of these Avr

SUBMITTER: Dussault-Benoit C 

PROVIDER: S-EPMC7036360 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature