Evidence for intragenic recombination and selective sweep in an effector gene of Phytophthora infestans.

ABSTRACT: Effectors, a group of small proteins secreted by pathogens, play a critical role in the antagonistic interaction between plant hosts and pathogens through their dual functions in regulating host immune systems and pathogen infection capability. In this study, evolution in effector genes was investigated through population genetic analysis of Avr3a sequences generated from 96 Phytophthora infestans isolates collected from six locations representing a range of thermal variation and cropping systems in China. We found high genetic variation in the Avr3a gene resulting from diverse mechanisms extending beyond point mutations, frameshift, and defeated start and stop codons to intragenic recombination. A total of 51 nucleotide haplotypes encoding 38 amino acid isoforms were detected in th

SUBMITTER: Yang L 

PROVIDER: S-EPMC6099815 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature