Clostridium Acetobutylicum’s Connecting World: Cell Appendage Formation in Bioelectrochemical Systems

  • Bacterial cell appendix formation supports cell-cell interaction, cell adhesion and cell movement. Additionally, in bioelectrochemical systems (BES), cell appendages have been shown to participate in extracellular electron transfer. In this work, the cell appendix formation of Clostridium acetobutylicum in biofilms of a BES are imaged and compared with conventional biofilms. Under all observed conditions, the cells possess filamentous appendages with a higher number and density in the BES. Differences in the amount of extracellular polymeric substance in the biofilms of the electrodes lead to the conclusion that the cathode can be used as electron donor and the anode as electron acceptor by C. acetobutylicum. When using conductive atomic force microscopy, a current response of about 15 nA is found for the cell appendages from the BES. This is the first report of conductivity for clostridial cell appendices and represents the basis for further studies on their role for biofilm formation and electron transfer.

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Author:Mareike Engel, André Gemünde, Dirk Holtmann, Christine Müller-Renno, Christiane Ziegler, Nils Tippkötter, Roland UlberORCiD
Parent Title (English):ChemElectroChem
Document Type:Article
Language of publication:English
Date of Publication (online):2024/04/03
Year of first Publication:2020
Publishing Institution:Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau
Date of the Publication (Server):2024/04/03
Page Number:7
First Page:414
Last Page:420
Faculties / Organisational entities:Kaiserslautern - Fachbereich Maschinenbau und Verfahrenstechnik
DDC-Cassification:6 Technik, Medizin, angewandte Wissenschaften / 660 Technische Chemie
Licence (German):Zweitveröffentlichung