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Erwinia psidii

Erwinia psidii is a Gram-negative bacterium and a phytopathogen of the common guava (Psidium guajava), causing rot in branches, flowers and fruits. Recently,[1] it was demonstrated that this species produces two acyl-homoserine lactones (S-(-)-N-hexanoyl- and N-heptanoyl-homoserine lactone), widely recognized bacterial quorum sensing signaling substances, and employed in bacterial cell-to-cell communication systems.

Erwinia psidii
Scientific classification
Domain: Bacteria
Phylum: Proteobacteria
Class: Gammaproteobacteria
Order: Enterobacteriales
Family: Enterobacteriaceae
Genus: Erwinia
Species: E. psidii
Binomial name
Erwinia psidii
Rodrigues Neto et al. 1988


  1. ^ Pomini AM; Manfio GP; Araújo WL; Marsaioli AJ. (2005). "Acyl-homoserine lactones from Erwinia psidii R. IBSBF 435T, a guava phytopathogen (Psidium guajava L.)". Journal of Agricultural and Food Chemistry. 53 (16): 6262–6265. doi:10.1021/jf050586e. PMID 16076103.

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