Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms

Zhang, Xu; Luther, Amanda K.; Rabaey, Korneel; Prévoteau, Antonin

doi:10.1016/j.bioelechem.2023.108581

Bioelectrochemistry

2024

DOI: 10.1016/j.bioelechem.2023.108581

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Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms

Xu Zhang,

Amanda K. Luther,

Korneel Rabaey

et al.

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2024

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Cited by 2 publications

References 38 publications

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Anode biomass rather than soluble organic matter is fuel for electricity production in microbial fuel cell at longer hydraulic retention time

Tanaka,

Xie,

Ishii

et al. 2024

Journal of Cleaner Production

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Anode biomass rather than soluble organic matter is fuel for electricity production in microbial fuel cell at longer hydraulic retention time

Tanaka,

Xie,

Ishii

et al. 2024

Journal of Cleaner Production

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Interspecies ecological competition rejuvenates decayed Geobacter electroactive biofilm

Ye,

Zhang,

Hong

et al. 2024

The ISME Journal

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Bioelectrochemical systems (BESs) exploit electroactive biofilms (EABs) for promising applications in biosensing, wastewater treatment, energy production, and chemical biosynthesis. However, during the operation of BESs, EABs inevitably decay. Seeking approaches to rejuvenate decayed EABs is critical for the sustainability and practical application of BESs. Prophage induction has been recognized as the primary reason for EAB decay. Herein, we report that introducing a competitive species of Geobacter uraniireducens suspended prophage induction in Geobacter sulfurreducens and thereby rejuvenated the decayed G. sulfurreducens EAB. The transcriptomic profile of G. sulfurreducens demonstrated that the addition of G. uraniireducens significantly affected the expression of metabolism- and stress response system-related genes and in particular suppressed the induction of phage-related genes. Mechanistic analyses revealed that interspecies ecological competition exerted by G. uraniireducens suppressed prophage induction. Our findings not only reveal a novel strategy to rejuvenate decayed EABs, which is significant for the sustainability of BESs, but also provide new knowledge for understanding phage–host interactions from an ecological perspective, with implications for developing therapies to defend against phage attack.

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Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms

Cited by 2 publications

References 38 publications

Anode biomass rather than soluble organic matter is fuel for electricity production in microbial fuel cell at longer hydraulic retention time

Anode biomass rather than soluble organic matter is fuel for electricity production in microbial fuel cell at longer hydraulic retention time

Interspecies ecological competition rejuvenates decayed Geobacter electroactive biofilm

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