The electrochemical behavior and electro-autotrophy of a halo-alkaliphilic chemo-autotrophic Ectothiorhodospiraceae isolated from a soda lake, Thioalkalivibrio nitratireducens, were investigated using electrochemical methods and confocal fluorescence microscopy. The electrocatalysis of oxygen reduction was observed at −0.25 V/Ag/AgCl (−0.055 V/ SHE) with bioelectrodes polarized at −0.3 V/Ag/AgCl (−0.105 V/SHE), displaying a maximum catalytic current density of −620 mA m⁻² (voltammetry). No catalytic signal toward nitrate reduction was observed under anaerobia. The microscopic observation of the polarized electrodes compared to non-polarized ones, however, revealed a bacterial proliferation both under aerobic and anaerobic conditions, demonstrating the ability of Tv. nitratireducens to grow with the polarized electrode as sole electron source.

电化学行为和卤代嗜碱性化疗自养Ectothiorhodospiraceae的电-自养来自苏打湖，分离Thioalkalivibrio nitratireducens，采用电化学方法和共聚焦荧光显微镜进行了调查。在-0.25 V / Ag / AgCl（-0.055 V / SHE）处观察到氧还原的电催化，生物电极在-0.3 V / Ag / AgCl（-0.105 V / SHE）极化，显示最大催化电流密度为-620 mA m ^-2（伏安法）。在厌氧下没有观察到硝酸盐还原的催化信号。显微镜观察到的极化电极与非极化电极相比，发现细菌在有氧和厌氧条件下均能增殖，证明了其能力。电视。硝化还原体以极化电极作为唯一电子源生长。