A Novel Exoelectrogenic Bacterium Phylogenetically Related to Clostridium sporogenes Isolated from Copper Contaminated Soil. Issue 5 (7th February 2017)

• Record Type: Journal Article
• Authors: Deng, Huan; Xue, Hongjing; Zhong, Wenhui
• Is Part Of: Electroanalysis. Volume 29:Issue 5(2017)
• Page Start: 1294
• Page End: 1300
• Publication Date: 2017-02-07
• Subjects: microbial fuel cells -- cyclic voltammetry -- polarization curve -- Fe(III)-reducing bacteria; Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201600673
• Languages: English
• ISSNs: 1040-0397

Abstract

Abstract: As a vast pool of micro‐organisms, soil might contain diverse exoelectrogenic bacteria. However, soil source exoelectrogenic bacteria were seldom studied. We isolated one exoelectrogenic bacterial strain (designated as R6) from a microbial fuel cell (MFC) operated with copper contaminated soil. Based on phylogenetic analysis of the 16S rRNA gene sequences, along with physiological and morphological characteristics, strain R6 was identified as Clostridium sporogenes, which was not reported as an exoelectrogenic bacterium before. Cyclic voltammetry measurements revealed that strain R6 transferred electrons to anode through direct contact rather than by generating electron shuttles. The voltage curve generated by strain R6 showed that the bacteria was resistant to 10 mg L −1 Cu 2+, but were inhibited with more than 25 mg L −1 Cu 2+ . This study highlights the discovery of more soil source exoelectrogenic bacterial species. Abstract :