Plant lectin-like antibacterial proteins from phytopathogens Pseudomonas syringae and Xanthomonas citri.

TitlePlant lectin-like antibacterial proteins from phytopathogens Pseudomonas syringae and Xanthomonas citri.
Publication TypeJournal Article
Year of Publication2012
AuthorsGhequire, M. G. K., W. Li, P. Proost, R. Loris, and R. De Mot
JournalEnviron Microbiol Rep
Volume4
Issue4
Pagination373-80
Date Published2012 Aug
Type of Articlelectins
ISSN1758-2229
Abstract

The genomes of Pseudomonas syringae pv. syringae 642 and Xanthomonas citri pv. malvacearum LMG 761 each carry a putative homologue of the plant lectin-like bacteriocin (llpA) genes previously identified in the rhizosphere isolate Pseudomonas putida BW11M1 and the biocontrol strain Pseudomonas fluorescens Pf-5. The respective purified recombinant proteins, LlpAPss642 and LlpAXcm761 , display genus-specific antibacterial activity across species boundaries. The inhibitory spectrum of the P. syringae bacteriocin overlaps partially with those of the P. putida and P. fluorescens LlpAs. Notably, Xanthomonas axonopodis pv. citri str. 306 secretes a protein identical to LlpAXcm761 . The functional characterization of LlpA proteins from two different phytopathogenic γ-proteobacterial species expands the lectin-like bacteriocin family beyond the Pseudomonas genus and suggests its involvement in competition among closely related plant-associated bacteria with different lifestyles.

DOI10.1111/j.1758-2229.2012.00331.x
Alternate JournalEnviron Microbiol Rep
PubMed ID23760822