PDF(Pubmed)
Abstract：
Microorganisms are key players in the global biogeochemical sulfur cycle. Among them, some have garnered particular attention due to their electrical activity and ability to perform extracellular electron transfer. A growing body of research has highlighted their extensive phylogenetic and metabolic diversity, revealing their crucial roles in ecological processes. In this review, we delve into the electron transfer process between sulfate-reducing bacteria and anaerobic alkane-oxidizing archaea, which facilitates growth within syntrophic communities. Furthermore, we review the phenomenon of long-distance electron transfer and potential extracellular electron transfer in multicellular filamentous sulfur-oxidizing bacteria. These bacteria, with their vast application prospects and ecological significance, play a pivotal role in various ecological processes. Subsequently, we discuss the important role of the pili/cytochrome for electron transfer and presented cutting-edge approaches for exploring and studying electroactive microorganisms. This review provides a comprehensive overview of electroactive microorganisms participating in the biogeochemical sulfur cycle. By examining their electron transfer mechanisms, and the potential ecological and applied implications, we offer novel insights into microbial sulfur metabolism, thereby advancing applications in the development of sustainable bioelectronics materials and bioremediation technologies.
摘要：
微生物是全球生物地球化学硫循环的关键参与者。其中,由于它们的电活动和进行细胞外电子转移的能力，有些引起了特别的关注。越来越多的研究强调了它们广泛的系统发育和代谢多样性，揭示了它们在生态过程中的关键作用。在这次审查中,我们深入研究了硫酸盐还原细菌和厌氧烷烃氧化古细菌之间的电子转移过程，促进互养群落内的生长。此外，我们回顾了多细胞丝状硫氧化细菌中的长距离电子转移和潜在的细胞外电子转移现象。这些细菌,具有广阔的应用前景和生态意义，在各种生态过程中起着举足轻重的作用。随后，我们讨论了菌毛/细胞色素对电子转移的重要作用，并提出了探索和研究电活性微生物的前沿方法。这篇综述提供了参与生物地球化学硫循环的电活性微生物的全面概述。通过研究它们的电子转移机制，以及潜在的生态和应用影响，我们提供了对微生物硫代谢的新见解，从而推进可持续生物电子材料和生物修复技术的开发应用。
