Open AccessDoes M icrocystis aeruginosa have quorum sensing?
Author(s) -
Zhai Chunmei,
Zhang Ping,
Shen Fei,
Zhou Changxin,
Liu Changhong
Publication year - 2012
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2012.02650.x
Subject(s) - quorum sensing , axenic , microcystis aeruginosa , homoserine , bacteria , microbiology and biotechnology , autoinducer , bioassay , chemistry , metabolite , cell signaling , pseudomonas aeruginosa , biology , virulence , biochemistry , signal transduction , cyanobacteria , gene , genetics
Quorum sensing ( QS ) is a system of cell‐to‐cell communication by means of intercellular signaling molecules to coordinate a set of targeted gene expression or repression in many Gram‐negative bacteria; it plays important roles for bacteria in adaptation to adverse environmental conditions. In this study, we first demonstrated that M icrocystis aeruginosa PCC ‐7820 could produce QS ‐related signal acylated homoserine lactones ( AHL s) among the metabolite of axenic M . aeruginosa , based on bioassay and liquid chromatography–mass spectrometry ( LC ‐ MS ) analysis. The concentration of the AHL s in the culture medium was cell density dependent and reached a maximum of 18 nM at 1.03 × 10 7 cells mL −1 , 30 days after inoculation. The regulation mechanism of QS in M . aeruginosa and its possible role in bloom formation are discussed.