掃碼二維碼觀看直播

入會(huì)暗號(hào)?

直播時(shí)間：2023年4月20日 9:00am（北京時(shí)間）

Zoom會(huì)議ID：816 9975 7155

Bilibili鏈接：

https://live.bilibili.com/25002335?broadcast_type=0&;is_room_feed=1&spm_id_from=333.999.0.0（生態(tài)環(huán)境健康EEH）

本期主題

微生物細(xì)胞外電子轉(zhuǎn)移的

分子機(jī)制及其生物技術(shù)應(yīng)用

本期主持：

高旭波 教授

EEH期刊預(yù)備編委

中國(guó)地質(zhì)大學(xué)（武漢）環(huán)境學(xué)院

特邀主講：

石良?教授

中國(guó)地質(zhì)大學(xué)（武漢）

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.

報(bào)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.