Xanthomonas axonopodis pv. citri uses a plant natriuretic peptide-like protein to modify host homeostasis.

ABSTRACT: Plant natriuretic peptides (PNPs) are a class of extracellular, systemically mobile molecules that elicit a number of plant responses important in homeostasis and growth. The bacterial citrus pathogen, Xanthomonas axonopodis pv. citri, also contains a gene encoding a PNP-like protein, XacPNP, that shares significant sequence similarity and identical domain organization with plant PNPs but has no homologues in other bacteria. We have expressed and purified XacPNP and demonstrated that the bacterial protein alters physiological responses including stomatal opening in plants. Although XacPNP is not expressed under standard nutrient rich culture conditions, it is strongly induced under conditions that mimic the nutrient poor intercellular apoplastic environment of leaves, as well as in infecte

SUBMITTER: Gottig N 

PROVIDER: S-EPMC2587547 | biostudies-literature | 2008 Nov

REPOSITORIES: biostudies-literature