Acta Chim. Sinica ›› 2017, Vol. 75 ›› Issue (6): 583-593.DOI: 10.6023/A17010021 Previous Articles     Next Articles

Special Issue: 铁环境化学



邱轩a, 石良a,b   

  1. a 中国地质大学(武汉)生物地质与环境地质国家重点实验室 武汉 430074;
    b 中国地质大学(武汉)环境学院生物科学与技术系 武汉 430074
  • 投稿日期:2017-01-13 发布日期:2017-02-23
  • 通讯作者: 石良
  • 基金资助:


Electrical Interplay between Microorganisms and Iron-bearing Minerals

Qiu Xuana, Shi Lianga,b   

  1. a State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074;
    b Department of Biological Sciences and Technology, School of Environmental Studies, China University of Geosciences, Wuhan 430074
  • Received:2017-01-13 Published:2017-02-23
  • Contact: 10.6023/A17010021
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 41502317 & 41630318) and the Open Fund of the State Key Laboratory of Environmental Geology and Biogeology (No. GBL21503).

Iron-bearing minerals are widespread in soil and subsurface environment where they support microbial growth and metabolisms by serving as the terminal electron acceptors for microbial anaerobic respiration; the electron donors and energy sources for microbial autotrophic growth; the conductors for mediating electron transfer between microbial cells and the electron storage materials. Because microbial cell envelope is neither permeable to iron-bearing minerals nor electrical conductive, microorganisms have evolved capabilities to exchange electrons between the microbial cytoplasmic membrane and the minerals external to the microbial cells (i.e., microbial extracellular electron transfer). Microbial extracellular electron transfer differs fundamentally from the microbial electron transport chain for aerobic respiration. In this review, we discussed the molecular underpinnings of microbial extracellular electron transfer with iron-bearing minerals and applications of the related microorganisms in remediation of environmental contaminants, production of novel nano-materials, biomining and bioenergy production.

Key words: extracellular electron transfer, microorganism, mineral, iron, mechanism