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Title: | Long-distance electron transfer in a filamentous Gram-positive bacterium | Authors: | Wang, Zegao Gan, Cuifen Klausen, Lasse Hyldgaard BONNE, Robin Kong, Guannan Luo, Dizhou Zhu, Chunjie Sun, Guoping Guo, Jun Ma, Yuxin Bjerg, Jesper Tataru MANCA, Jean Xu, Meiying Nielsen, Lars Peter Dong, Mingdong Meert, Mathijs Yang, Yonggang |
Issue Date: | 2021 | Publisher: | NATURE RESEARCH | Source: | Nature Communications, 12 (1) (Art N° 1709) | Abstract: | Long-distance extracellular electron transfer has been observed in Gram-negative bacteria and plays roles in both natural and engineering processes. The electron transfer can be mediated by conductive protein appendages (in short unicellular bacteria such as Geobacter species) or by conductive cell envelopes (in filamentous multicellular cable bacteria). Here we show that Lysinibacillus varians GY32, a filamentous unicellular Gram-positive bacterium, is capable of bidirectional extracellular electron transfer. In microbial fuel cells, L. varians can form centimetre-range conductive cellular networks and, when grown on graphite electrodes, the cells can reach a remarkable length of 1.08mm. Atomic force microscopy and microelectrode analyses suggest that the conductivity is linked to pili-like protein appendages. Our results show that long-distance electron transfer is not limited to Gram-negative bacteria. Long-distance extracellular electron transfer has been observed in Gram-negative bacteria. Here, Yang et al. show that a filamentous, unicellular Gram-positive bacterium is capable of bidirectional extracellular electron transfer, and forms centimetre-range conductive networks consisting of 1mm-long cells and conductive appendages. | Notes: | Xu, MY (corresponding author), Guangdong Acad Sci, Inst Microbiol, Guangzhou, Peoples R China.; Xu, MY (corresponding author), State Key Lab Appl Microbiol Southern China, Guangzhou, Peoples R China.; Xu, MY (corresponding author), Guangdong Prov Key Lab Microbial Culture Collect, Guangzhou, Peoples R China.; Dong, MD (corresponding author), Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, Sino Danish Ctr Educ & Res SDC, Aarhus, Denmark. xumy@gdim.cn; dong@inano.au.dk |
Other: | Xu, MY (corresponding author), Guangdong Acad Sci, Inst Microbiol, Guangzhou, Peoples R China ; State Key Lab Appl Microbiol Southern China, Guangzhou, Peoples R China ; Guangdong Prov Key Lab Microbial Culture Collect, Guangzhou, Peoples R China ; Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, Sino Danish Ctr Educ & Res SDC, Aarhus, Denmark. xumy@gdim.cn; dong@inano.au.dk | Keywords: | Bacillaceae;Bioelectric Energy Sources;Electric Conductivity;Electrodes;Electron Transport;Fimbriae, Bacterial;Gram-Positive Bacteria;Graphite;Microscopy, Atomic Force;Nanowires | Document URI: | http://hdl.handle.net/1942/34175 | e-ISSN: | 2041-1723 | DOI: | 10.1038/s41467-021-21709-z | ISI #: | WOS:000630420900008 | Rights: | The Author(s) 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
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s41467-021-21709-z.pdf | Published version | 2.22 MB | Adobe PDF | View/Open |
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