中国地质大学石良教授-微生物细胞外电子转移的分子机制及其生物技术应用
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入会暗号
直播时间：2023年4月20日 9:00am（北京时间）
Zoom会议ID：816 9975 7155
Bilibili链接：
https://live.bilibili.com/25002335?broadcast_type=0&;is_room_feed=1&spm_id_from=333.999.0.0（生态环境健康EEH）
本期主题
微生物细胞外电子转移的
分子机制及其生物技术应用
本期主持：
高旭波 教授
EEH期刊预备编委
中国地质大学（武汉）环境学院
特邀主讲：
石良 教授
中国地质大学（武汉）
Dr. Liang Shi is a distinguished professor at School of Environmental Studies, China University of Geosciences-Wuhan (CUG-Wuhan). He has authored and co-authored 137 peer-reviewed scientific papers of a h-index of 48. In 2002, Dr. Shi joined the Geomicrobiology Group of Pacific Northwest National Laboratory (PNNL), USA as a grade III research scientist and principal investigator. He was then promoted to grade IV and V research scientist in 2006 and 2012, respectively. During his tenure at PNNL, Dr. Shi identified and characterized three different pathways for microbial extracellular electron transfer (EET). After Prof. Shi moved to CUG-Wuhan in 2016, his researches have focused on the molecular mechanisms of microbial EET and biotechnological applications of the microorganisms with EET capability, such as bioremediation, microbial fuel cells and electrobiosynthesis. In 2020 and 2021, Prof. Shi was invited to nominate Nobel Prize in Chemistry by The Royal Swedish Academy of Sciences.
报告摘要
The electron exchanges between redox carriers in the microbial cytoplasmic membrane and extracellular substrates, such as Fe-bearing minerals, are often referred to as microbial extracellular electron transfer. To overcome the electrical and physical barrier external to the cytoplasmic membrane, microorganisms have evolved distinct mechanisms for electron exchange between the cytoplasmic membrane and extracellular substrates via a network of redox and structural proteins. These proteins often form pathways that electrically and physically connect the intracellular metabolic processes with the redox transformations of extracellular substrates. Over the past 20 years, substantial progress has been made in identification and characterization of microbial extracellular electron transfer pathways. Among them, the metal-reducing pathway of Shewanella oneidensis MR-1 is the most rigorously investigated and best characterized microbial extracellular electron transfer pathway. The microorganisms with extracellular electron transfer capabilities have also been employed for a variety of biotechnological applications, such as bioremediation of environmental contaminants, microbial fuel cells and electrobiosynthesis.
In this session of Talk@EEH, I will first report my previous work at Pacific Northwest National Laboratory and then my current work at China University of Geosciences-Wuhan. The latter includes 1) extracellular electron transfer pathway of Acidithiobacillus ferrooxidans for Fe(II) oxidation, 2) extracellular electron transfer pathways of S. oneidensis MR-1for iodate reduction, 3) the roles of nanowires in the co-culture of Geobacter species and 4) biotechnological applications of S. oneidensis MR-1 and Geobacter species.
