The Two-Component System RstA/RstB Regulates Expression of Multiple Efflux Pumps and Influences Anaerobic Nitrate Respiration in Pseudomonas fluorescens oleh Di-Yin Li, Jian-Ting Han, Meng-Yuan Zhang, Xu Yan, Nannan Zhang, Honghua Ge, Zhiping Wang, Yong-Xing He