Open AccessThe presence, type and role of N ‐acyl homoserine lactone quorum sensing in fluorescent Pseudomonas originally isolated from rice rhizospheres are unpredictable
Author(s) -
Steindler Laura,
Bertani Iris,
De Sordi Luisa,
Bigirimana Joseph,
Venturi Vittorio
Publication year - 2008
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.1574-6968.2008.01344.x
Subject(s) - quorum sensing , rhizosphere , pseudomonas , homoserine , biology , bacteria , microbiology and biotechnology , pseudomonas aeruginosa , genetics , biofilm
In Gram‐negative bacteria, a typical quorum‐sensing (QS) system involves the production and response to N ‐acyl homoserine lactones (AHLs). It still remains unclear as to how pivotal and conserved AHL QS is in root‐colonizing rhizosphere Pseudomonas . We, therefore, performed a systematic study of AHL QS on a set of 50 rice rhizosphere Pseudomonas isolates. We also isolated the AHL QS genes in two representative strains and analyzed the role of AHL QS regulation of various phenotypes. Our results are discussed with the current knowledge of AHL QS of rhizosphere Pseudomonas , implicating a lack of conservation and an unpredictable role played by AHL QS in this group of bacteria.