Electron acceptor redox potential globally regulates transcriptomic profiling in Shewanella decolorationis S12

• DOI: 10.1038/srep31143
• Publication Date: 2016-08-09T09:42:47Z
• Authors: Yingli Lian; Yonggang Yang; Jun Guo; Yan Wang; Xiaojing Li; Yun Fang; Lixia Gan; Meiying Xu
• Keywords: Electron acceptor; Metabolic pathway; Shewanella; Tricarboxylic acid; Microbial Metabolism

Abstract Electron acceptor redox potential (EARP) was presumed to be a determining factor for microbial metabolism in many natural and engineered processes. However, little is known about the potentially global effects of EARP on bacteria. In this study, we compared physiological transcriptomic properties Shewanella decolorationis S12 respiring with different EARPs electrochemical systems avoid caused by other physicochemical real electron acceptor. Results showed that metabolic activities strain were nonlinear responses EARP. The tricarboxylic acid cycle central carbon down-regulated while glyoxylate shunt up-regulated at 0.8 V 0.2 −0.2 V, which suggested an important but not only determinant pathways S12. Moreover, few cytochrome c genes differentially expressed EARPs. energy intensive flagella assembly assimilatory sulfur significantly enriched had stronger electrokinesis behavior oxidative stress-response high This study provides first information regulations metabolism, will helpful understanding microorganism respiration.