A core Plasmopara viticola effector attenuates the DNA-binding activity of bZIP transcription factor to compromise plant immunity.

ABSTRACT: Grapevine (Vitis vinifera L.) frequently faces challenges from various pathogens, among which Plasmopara viticola is the most devastating one hindering grape production. During infection, P. viticola secretes a series of effectors into host cells to manipulate plant immune responses. Here, an RXLR effector of P. viticola, PvRXLR13, was identified as one that could disrupt immune processes and thus promote pathogen colonization. PvRXLR13 contained a functional signal peptide and was highly conserved across different destructive oomycetes. PvRXLR13 was significantly induced during P. viticola infection and could suppress elicitor chitin-induced reactive oxygen species (ROS), callose deposition, and INF1-triggered cell death. Furthermore, PvRXLR13 could also inhibit P. viticola- and P. capsic

SUBMITTER: Liu J 

PROVIDER: S-EPMC12038878 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature