%0 Journal Article
%T Quorum Sensing Activity of Enterobacter asburiae Isolated from Lettuce Leaves
%A Yin Yin Lau
%A Joanita Sulaiman
%A Jian Woon Chen
%A Wai-Fong Yin
%A Kok-Gan Chan
%J Sensors
%D 2013
%I MDPI AG
%R 10.3390/s131014189
%X Bacterial communication or quorum sensing (QS) is achieved via sensing of QS signaling molecules consisting of oligopeptides in Gram-positive bacteria and N-acyl homoserine lactones (AHL) in most Gram-negative bacteria. In this study, Enterobacteriaceae isolates from Batavia lettuce were screened for AHL production. Enterobacter asburiae, identified by matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF-MS) was found to produce short chain AHLs. High resolution triple quadrupole liquid chromatography mass spectrometry (LC/MS) analysis of the E. asburiae spent supernatant confirmed the production of N-butanoyl homoserine lactone (C4-HSL) and N¨Chexanoyl homoserine lactone (C6-HSL). To the best of our knowledge, this is the first report of AHL production by E. asburiae.
%K Enterobacter asburiae
%K MALDI-TOF
%K mass spectrometry
%K N-acyl homoserine lactone
%K N¨Chexanoyl homoserine lactone
%K N-butanoyl homoserine lactone
%K quorum sensing
%K lettuce
%K food spoilage
%K food microbiology
%K food safety
%U http://www.mdpi.com/1424-8220/13/10/14189