首页|Electroactivity of the magnetotactic bacteria Magnetospirillum magneticum AMB-1 and Magnetospirillum gryphiswaldense MSR-1

Electroactivity of the magnetotactic bacteria Magnetospirillum magneticum AMB-1 and Magnetospirillum gryphiswaldense MSR-1

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Magnetotactic bacteria reside in sediments and stratified water columns.They are named after their ability to synthesize internal magnetic particles that allow them to align and swim along the Earth's magnetic field lines.Here,we show that two magnetotactic species,Magnetospirillum magneticum strain AMB-1 and Magnetospirillum gryphiswaldense strain MSR-1,are electroactive.Both M.magneticum and M.gryphiswaldense were able to generate current in microbial fuel cells with maximum power densities of 27 and 11 μW/m2,respectively.In the presence of the electron shuttle resazurin both species were able to reduce the crystalline iron oxide hematite(Fe2O3).In addition,M.magneticum could reduce poorly crystalline iron oxide(FeOOH).Our study adds M.magneticum and M.gryphiswaldense to the growing list of known electroactive bacteria,and implies that electroactivity might be common for bacteria within the Magnetospirillum genus.

Magnetotactic bacteriaMagnetospirillum magneticumMagnetospirillum gryphiswaldenseExtracellular electron transferMicrobial fuel cells

Mathias Fessler、Qingxian Su、Marlene Mark Jensen、Yifeng Zhang

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Department of Environmental and Resource Engineering,Technical University of Denmark,Copenhagen,DK-2800,Denmark

Carlsberg Foundation Distinguished FellowshipsResearch from VILLUM FONDENIndependent Research Fund DenmarkFunding Note Open access funding provided by Technical University of Denmark

CF18-008400023110DFF-Project 1 1032-00028B

2024

10.1007/s11783-024-1808-3

环境科学与工程前沿
高等教育出版社

环境科学与工程前沿

影响因子：0.545
ISSN：2095-2201
年,卷(期)：2024.18(4)
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