A phospholipase effector of the type VI secretion system modulates plant reproduction.

ABSTRACT: Phytobacteria play diverse roles in plant biology, ranging from promoting health to causing diseases that threaten global food security and the economy. In contrast to the extensive studies of phytopathogens targeting leaves and roots, their impact on plant reproductive processes has been largely overlooked. Here, we demonstrate that a bacterial effector TleB of the type VI secretion system in Xanthomonas oryzae can modulate seed production of Arabidopsis thaliana. Using biochemical, structural, and physiological analyses, we determined TleB as a phospholipase that mediates interspecies microbial competition in X. oryzae. Additionally, TleB plays a key role in the infection of inflorescences by X. oryzae, which leads to significantly reduced seed production. Lip

SUBMITTER: Tan Z-M 

PROVIDER: S-EPMC12421835 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature