Bacterial cells communicate with each other through their specific chemical languages, by which bacteria regulate a set of genes in a multicellular behavior, including antibiotics, biofilm, motility, and virulence. The twitter communication in Gram positive bacteria is mediated by diffusible signal molecules, N-acyl homoserine lactones (HSLs), that differ with respect to the length, saturation and substitutions of the side-chain. In Gram negative bacteria, diffusible peptides control the physiological phenotypes. In this presentation, some general examples of bacterial twitter communication, such as Vibrio fischeri, Burkholderia glumae, Agrobacterium tumefaciens, and Serratia marcescens will be presented. The contribution of bacterial communication to pathogenicity of Pantoea ananatis, our model bacterium causing bacterial rice sheath rot and onion center rot diseases, will mainly be discussed.

• Okhee Choi(Institute of Agriculture & Life Science)
• Byeongsam Kang(Division of Applied Life Science, Gyeongsang National University)
• Yeyeong Lee(Division of Applied Life Science, Gyeongsang National University)
• Jinwoo Kim(Institute of Agriculture & Life Science, Division of Applied Life Science, Gyeongsang National University)