 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Study on the Acyl-Homoserine Lactone Production of a
Gram-Negative Bacterium Sphingomonas xenophaga
by Co-Cultivation with Variovorax paradoxus) ผู้เขียน: Saranya Phunpruch, Kei Kamino สื่อสิ่งพิมพ์:pdf AbstractAcyl-homoserine lactone is one of the signal molecules produced for the cell-to-cell communication
in Gram-negative bacteria. When bacteria reach the high cell density at a threshold level, they produce
acyl-homoserine lactone. Acyl-homoserine lactone can bind to the receptor and then induce the target
gene expressions resulting in the decrease of the bacterial populations. From the co-cultivation of
Sphingomonas xenophaga that can produce acyl-homoserine lactone and Variovorax paradoxus that can
utilize acyl-homoserine lactone as an energy source, it was found that the optimum conditions for cocultivation
both bacteria were LB medium and incubation temperature at 20?C. In addition, V. paradoxus
could degrade acyl-homoserine lactone produced from S. xenophaga as an energy source resulting in the
increase of the 2-fold higher growth rate. The slower death of S. xenophaga by co-cultivation is due to
the decrease of acyl-homoserine lactone level. |