Electron shuttle-dependent biofilm formation and biocurrent generation: Concentration effects and mechanistic insights.

ABSTRACT:

Introduction

Electron shuttles (ESs) play a key role in extracellular electron transfer (EET) in Shewanella oneidensis MR-1. However, the quantification relationship between ES concentration, biofilm formation, and biocurrent generation has not been clarified.

Methods

In this study, 9,10-anthraquinone-2-sulfonic acid (AQS)-mediated EET and biofilm formation were evaluated at different AQS concentrations in bioelectrochemical systems (BESs) with S. oneidensis MR-1.

Results and discussion

Both the biofilm biomass (9- to 17-fold) and biocurrent (21- to 80-fold) were substantially enhanced by exogenous AQS, suggesting the dual ability of AQS to promote both biofilm formation and electron shuttling. Nevertheless, biofilms barely grew without the addition of e

SUBMITTER: Zhu X 

PROVIDER: S-EPMC10016380 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature