Research Article Quorum Sensing Activity of Mesorhizobium sp. F7 Isolated from Potable Water

License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. We isolated a bacterial isolate (F7) from potable water. The strain was identified as Mesorhizobium sp. by 16S rDNA gene phylogenetic analysis and screened for N-acyl homoserine lactone (AHL) production by an AHL biosensor. The AHL profile of the isolate was further analyzed using high resolution triple quadrupole liquid chromatography mass spectrometry (LC/MS) which confirmed the production of multiple AHLs, namely, N-3-oxo-octanoyl-L-homoserine lactone (3-oxo-C8-HSL) and N-3-oxo-decanoyl-L-homoserine lactone (3-oxo-C10-HSL).These findingswill open the perspective to study the function of theseAHLs in plant-microbe interactions. 1