Taylor B L, Miller J B, Warrick H M, Koshland D E
J Bacteriol. 1979 Nov;140(2):567-73. doi: 10.1128/jb.140.2.567-573.1979.
Salmonella typhimurium and Escherichia coli from anaerobic cultures displayed tactic responses to gradients of nitrate, fumarate, and oxygen when the appropriate electron transport pathway was present. Such responses were named "electron acceptor taxis" because they are elicited by terminal electron acceptors. Mutant strains of S. typhimurium and E. coli were used to establish that functioning electron transport pathways to nitrate and fumarate are required for taxis to these compounds. Aerotaxis in S. typhimurium was blocked by 1.0 mM KCN, which inhibited oxygen uptake. Similarly, a functioning electron transport pathway was shown to be essential for the tumbling response of S. typhimurium and E. coli to intense light (290 to 530 nm). Some inhibitors and uncouplers of respiration were repellents of S. typhimurium. We propose that behavioral responses to light or electron acceptors involve electron transport-mediated perturbations of the proton motive force.
当存在适当的电子传递途径时，来自厌氧培养物的鼠伤寒沙门氏菌和大肠杆菌对硝酸盐、富马酸盐和氧气梯度表现出趋化反应。这种反应被称为“电子受体趋化性”，因为它们是由末端电子受体引发的。利用鼠伤寒沙门氏菌和大肠杆菌的突变菌株确定，对于这些化合物的趋化性，需要有通向硝酸盐和富马酸盐的功能性电子传递途径。鼠伤寒沙门氏菌的好氧趋化性被1.0 mM的KCN阻断，KCN抑制了氧气摄取。同样，已证明功能性电子传递途径对于鼠伤寒沙门氏菌和大肠杆菌对强光（290至530 nm）的翻滚反应至关重要。一些呼吸抑制剂和解偶联剂是鼠伤寒沙门氏菌的驱避剂。我们提出，对光或电子受体的行为反应涉及电子传递介导的质子动力势扰动。
