电子穿梭体介导微生物还原铁氧化物的研究进展
Review on Electron-Shuttle-Mediated Microbial Reduction of Iron Oxides Minerals

微生物还原铁氧化物矿物是铁元素生物地球化学循环的重要组成，而利用具有氧化还原活性的电子穿梭体介导生物产生的电子向矿物的传递，促进Fe(III)还原是生物还原含铁矿物的一种重要方式. 基于对国内外相关研究成果的归纳整理，本文系统综述了影响腐殖质、醌、硫物种、生物自分泌化合物及固相碳材料等不同类型电子穿梭体参与微生物还原转化铁氧化物的因素及介导电子传递机理，展望了电子穿梭体在环境地质科学研究中有待进一步解决的问题.
Microbial reduction of iron oxides minerals is an essential component of the biogeochemical cycle of iron. The use of redox active electron shuttles to mediate the transfer of biogenic electrons to minerals and accelerate Fe(III) reduction is an important pathway for iron bioreduction. Based on sorting the outcomes in related fields at home and abroad, the impacts of different electron shuttles (humic substances, quinones, sulfur species, cell-secreted compounds and solid carbon materials, etc.) on microbial reduction of iron oxides and their respective mechanisms are reviewed systematically in this paper. And key issues regarding electron shuttles in environmental geology to be solved are~suggested