Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications

Geobacter and Shewanella spp. were discovered in late 1980s as dissimilatory metal-reducing microorganisms that can transfer electrons from cytoplasmic respiratory oxidation reactions to external metal-containing minerals. In addition to mineral-based electron acceptors, Geobacter and Shewanella spp...

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Autores principales:	Yidan Hu, Yinghui Wang, Xi Han, Yawei Shan, Feng Li, Liang Shi
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	Geobacter Shewanella exoelectrogen biofilm biofilm engineering microbial fuel cells Biotechnology TP248.13-248.65
Acceso en línea:	https://doaj.org/article/31307661bb5f451799ef860e3be24d9c
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spelling	oai:doaj.org-article:31307661bb5f451799ef860e3be24d9c2021-12-03T07:03:24ZBiofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications2296-418510.3389/fbioe.2021.786416https://doaj.org/article/31307661bb5f451799ef860e3be24d9c2021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fbioe.2021.786416/fullhttps://doaj.org/toc/2296-4185Geobacter and Shewanella spp. were discovered in late 1980s as dissimilatory metal-reducing microorganisms that can transfer electrons from cytoplasmic respiratory oxidation reactions to external metal-containing minerals. In addition to mineral-based electron acceptors, Geobacter and Shewanella spp. also can transfer electrons to electrodes. The microorganisms that have abilities to transfer electrons to electrodes are known as exoelectrogens. Because of their remarkable abilities of electron transfer, Geobacter and Shewanella spp. have been the two most well studied groups of exoelectrogens. They are widely used in bioelectrochemical systems (BESs) for various biotechnological applications, such as bioelectricity generation via microbial fuel cells. These applications mostly associate with Geobacter and Shewanella biofilms grown on the surfaces of electrodes. Geobacter and Shewanella biofilms are electrically conductive, which is conferred by matrix-associated electroactive components such as c-type cytochromes and electrically conductive nanowires. The thickness and electroactivity of Geobacter and Shewanella biofilms have a significant impact on electron transfer efficiency in BESs. In this review, we first briefly discuss the roles of planktonic and biofilm-forming Geobacter and Shewanella cells in BESs, and then review biofilm biology with the focus on biofilm development, biofilm matrix, heterogeneity in biofilm and signaling regulatory systems mediating formation of Geobacter and Shewanella biofilms. Finally, we discuss strategies of Geobacter and Shewanella biofilm engineering for improving electron transfer efficiency to obtain enhanced BES performance.Yidan HuYinghui WangXi HanYawei ShanFeng LiLiang ShiLiang ShiLiang ShiLiang ShiFrontiers Media S.A.articleGeobacterShewanellaexoelectrogenbiofilmbiofilm engineeringmicrobial fuel cellsBiotechnologyTP248.13-248.65ENFrontiers in Bioengineering and Biotechnology, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geobacter Shewanella exoelectrogen biofilm biofilm engineering microbial fuel cells Biotechnology TP248.13-248.65
spellingShingle	Geobacter Shewanella exoelectrogen biofilm biofilm engineering microbial fuel cells Biotechnology TP248.13-248.65 Yidan Hu Yinghui Wang Xi Han Yawei Shan Feng Li Liang Shi Liang Shi Liang Shi Liang Shi Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications
description	Geobacter and Shewanella spp. were discovered in late 1980s as dissimilatory metal-reducing microorganisms that can transfer electrons from cytoplasmic respiratory oxidation reactions to external metal-containing minerals. In addition to mineral-based electron acceptors, Geobacter and Shewanella spp. also can transfer electrons to electrodes. The microorganisms that have abilities to transfer electrons to electrodes are known as exoelectrogens. Because of their remarkable abilities of electron transfer, Geobacter and Shewanella spp. have been the two most well studied groups of exoelectrogens. They are widely used in bioelectrochemical systems (BESs) for various biotechnological applications, such as bioelectricity generation via microbial fuel cells. These applications mostly associate with Geobacter and Shewanella biofilms grown on the surfaces of electrodes. Geobacter and Shewanella biofilms are electrically conductive, which is conferred by matrix-associated electroactive components such as c-type cytochromes and electrically conductive nanowires. The thickness and electroactivity of Geobacter and Shewanella biofilms have a significant impact on electron transfer efficiency in BESs. In this review, we first briefly discuss the roles of planktonic and biofilm-forming Geobacter and Shewanella cells in BESs, and then review biofilm biology with the focus on biofilm development, biofilm matrix, heterogeneity in biofilm and signaling regulatory systems mediating formation of Geobacter and Shewanella biofilms. Finally, we discuss strategies of Geobacter and Shewanella biofilm engineering for improving electron transfer efficiency to obtain enhanced BES performance.
format	article
author	Yidan Hu Yinghui Wang Xi Han Yawei Shan Feng Li Liang Shi Liang Shi Liang Shi Liang Shi
author_facet	Yidan Hu Yinghui Wang Xi Han Yawei Shan Feng Li Liang Shi Liang Shi Liang Shi Liang Shi
author_sort	Yidan Hu
title	Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications
title_short	Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications
title_full	Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications
title_fullStr	Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications
title_full_unstemmed	Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications
title_sort	biofilm biology and engineering of geobacter and shewanella spp. for energy applications
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/31307661bb5f451799ef860e3be24d9c
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Biofilm Biology and Engineering of Geobacter and Shewanella spp. for Energy Applications

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