supported by the National Natural Science Foundation of China(31171832);the Jiangsu Agriculture Science and Technology Innovation Fund,China(CX(11)4056)
The sigma factor 54(σ^(54)) controls the expression of many genes in response to nutritional and environmental conditions. There are two σ^(54) genes, rpo N1(XAC1969) and rpo N2(XAC2972), in Xanthomonas ci...