Advances in mechanisms and engineering of electroactive biofilms

文献类型： 外文期刊

第一作者： You, Zixuan

作者： You, Zixuan;Wang, Yuxuan;Li, Feng;Song, Hao;You, Zixuan;Wang, Yuxuan;Li, Feng;Song, Hao;You, Zixuan;Wang, Yuxuan;Li, Feng;Song, Hao;Li, Jianxun;Wu, Deguang

作者机构：

关键词： Electroactive biofilm; Biofilm formation; Extracellular electron transfer; Synthetic biology

期刊名称：BIOTECHNOLOGY ADVANCES （ 影响因子：16.0； 五年影响因子：16.8 ）

ISSN： 0734-9750

年卷期： 2023 年 66 卷

页码：

收录情况： SCI

摘要： Electroactive biofilms (EABs) are electroactive microorganisms (EAMs) encased in conductive polymers that are secreted by EAMs and formed by the accumulation and cross-linking of extracellular polysaccharides, proteins, nucleic acids, lipids, and other components. EABs are present in the form of multicellular aggregates and play a crucial role in bioelectrochemical systems (BESs) for diverse applications, including biosensors, microbial fuel cells for renewable bioelectricity production and remediation of wastewaters, and microbial electrosynthesis of valuable chemicals. However, naturally occurred EABs are severely limited owing to their low electrical con-ductivity that seriously restrict the electron transfer efficiency and practical applications. In the recent decade, synthetic biology strategies have been adopted to elucidate the regulatory mechanisms of EABs, and to enhance the formation and electrical conductivity of EABs. Based on the formation of EABs and extracellular electron transfer (EET) mechanisms, the synthetic biology-based engineering strategies of EABs are summarized and reviewed as follows: (i) Engineering the structural components of EABs, including strengthening the synthesis and secretion of structural elements such as polysaccharides, eDNA, and structural proteins, to improve the formation of biofilms; (ii) Enhancing the electron transfer efficiency of EAMs, including optimizing the distri-bution of c-type cytochromes and conducting nanowire assembly to promote contact-based EET, and enhancing electron shuttles' biosynthesis and secretion to promote shuttle-mediated EET; (iii) Incorporating intracellular signaling molecules in EAMs, including quorum sensing systems, secondary messenger systems, and global regulatory systems, to increase the electron transfer flux in EABs. This review lays a foundation for the design and construction of EABs for diverse BESs applications.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序