Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihica
Exploring extracellular electron transfer (EET) is important to promote the applications of electrochemically active bacteria (EAB). Shewanella loihica PV-4, which is a model EAB capable of bidirectional EET, has shown promising application prospects in water quality monitoring and nitrogen removal....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-03-01
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| Series: | Electrochemistry Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248121000503 |
| _version_ | 1818622917575966720 |
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| author | Yue Yi Ting Zhao Yuxuan Zang Beizhen Xie Hong Liu |
| author_facet | Yue Yi Ting Zhao Yuxuan Zang Beizhen Xie Hong Liu |
| author_sort | Yue Yi |
| collection | DOAJ |
| description | Exploring extracellular electron transfer (EET) is important to promote the applications of electrochemically active bacteria (EAB). Shewanella loihica PV-4, which is a model EAB capable of bidirectional EET, has shown promising application prospects in water quality monitoring and nitrogen removal. However, its bidirectional EET mechanism is not clear yet. This study focused on the electrochemical characteristics and electron transfer processes of S. loihica PV-4 bidirectional EET. Results revealed that riboflavin (RF) facilitates both the outward and inward EET, and the enhancement mechanism depends on EET direction. When S. loihica PV-4 performs outward EET, free RF acts as a redox mediator to promote electricity production. When the EET direction is reversed, bound RF is involved in electricity consumption. These results elucidated the effect of RF on S. loihica PV-4 bidirectional EET, providing a basis for the enhancement of S. loihica PV-4 EET. |
| first_indexed | 2024-12-16T18:32:47Z |
| format | Article |
| id | doaj.art-18219f234988423fb4cdf438c341ed5c |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-16T18:32:47Z |
| publishDate | 2021-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-18219f234988423fb4cdf438c341ed5c2022-12-21T22:21:15ZengElsevierElectrochemistry Communications1388-24812021-03-01124106966Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihicaYue Yi0Ting Zhao1Yuxuan Zang2Beizhen Xie3Hong Liu4Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China; Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; International Joint Research Center of Aerospace Biotechnology & Medical Engineering, Beihang University, Beijing 100083, China; School of Aviation Science and Engineering, Beihang University, Beijing 100083, ChinaBeijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China; Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; International Joint Research Center of Aerospace Biotechnology & Medical Engineering, Beihang University, Beijing 100083, ChinaBeijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China; Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; International Joint Research Center of Aerospace Biotechnology & Medical Engineering, Beihang University, Beijing 100083, ChinaBeijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China; Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; International Joint Research Center of Aerospace Biotechnology & Medical Engineering, Beihang University, Beijing 100083, China; Corresponding author at: School of Biological Science and Medical Engineering, Beihang University, 37 Xueyuan RD, Haidian DIST, Beijing 100191, China.Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China; Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; International Joint Research Center of Aerospace Biotechnology & Medical Engineering, Beihang University, Beijing 100083, ChinaExploring extracellular electron transfer (EET) is important to promote the applications of electrochemically active bacteria (EAB). Shewanella loihica PV-4, which is a model EAB capable of bidirectional EET, has shown promising application prospects in water quality monitoring and nitrogen removal. However, its bidirectional EET mechanism is not clear yet. This study focused on the electrochemical characteristics and electron transfer processes of S. loihica PV-4 bidirectional EET. Results revealed that riboflavin (RF) facilitates both the outward and inward EET, and the enhancement mechanism depends on EET direction. When S. loihica PV-4 performs outward EET, free RF acts as a redox mediator to promote electricity production. When the EET direction is reversed, bound RF is involved in electricity consumption. These results elucidated the effect of RF on S. loihica PV-4 bidirectional EET, providing a basis for the enhancement of S. loihica PV-4 EET.http://www.sciencedirect.com/science/article/pii/S1388248121000503Electrochemically active bacteriaBidirectional extracellular electron transferInward extracellular electron transferBioelectrochemical systemMicrobial electrochemical system |
| spellingShingle | Yue Yi Ting Zhao Yuxuan Zang Beizhen Xie Hong Liu Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihica Electrochemistry Communications Electrochemically active bacteria Bidirectional extracellular electron transfer Inward extracellular electron transfer Bioelectrochemical system Microbial electrochemical system |
| title | Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihica |
| title_full | Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihica |
| title_fullStr | Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihica |
| title_full_unstemmed | Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihica |
| title_short | Different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of Shewanella loihica |
| title_sort | different mechanisms for riboflavin to improve the outward and inward extracellular electron transfer of shewanella loihica |
| topic | Electrochemically active bacteria Bidirectional extracellular electron transfer Inward extracellular electron transfer Bioelectrochemical system Microbial electrochemical system |
| url | http://www.sciencedirect.com/science/article/pii/S1388248121000503 |
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