A New Aspect for Quorum Sensing in several Halophilic Bacteria from Salt Lake in Central Anatolia

Quorum sensing (qs) is the system that is used to improve common behavior with other population member in their environment. Salt Lake in Turkey that considered an extreme environment because of salt density, teem in plankton and bacteria. Especially, it is an important field for halophilic bacteria whereas it provides suitable growth conditions. In this study, it was determined that 20 halophilic bacteria strain isolated from Salt Lake could produce qs signal molecules which are N-acyl homoserine lactone (HSL) derivatives. Detection of these bacterial signal molecules, was utilized thin layer chromatography with using Chromobacterium violaceum cv026 and Agrobacterium tumefaciens A136 that are biosensor bacteria strains. Genomic analysis of strains that produce signal molecules was carried out via 16s rRNA. Halobacterium salinarium, Salicola sp., Halovibrio and Halomonas were found to be common in Tuz Lake. It was also observed that these strains could produce C6-HSL and C8-HSL signaling molecules and produce biofilms.