The plant pathogen Erwinia amylovora produces acyl-homoserine lactone signal molecules in vitro and in planta

Bacteriology Group, International Centre for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, 34012 Trieste, Italy.
FEMS Microbiology Letters (Impact Factor: 2.72). 01/2005; 241(2):179-83. DOI: 10.1016/j.femsle.2004.10.015
Source: PubMed

ABSTRACT We report for the first time the production of acyl homoserine lactones (AHLs) by Erwina amylovora, an important quarantine bacterial pathogen that causes fire blight in plants. E. amylovora produces one N-acyl homoserine lactone [a N-(3-oxo-hexanoyl)-homoserine lactone or a N-(3-hydroxy-hexanoyl)-homoserine lactone] quorum sensing signal molecule both in vitro and in planta (pear plant). Given the involvement of AHLs in plant pathogenesis, we speculate that AHL-dependent quorum sensing could play an important role in the regulation of E. amylovora virulence.

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