Microbial Manganese Oxide Formation and Interaction with Toxic Metal Ions

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Author(s)

Abstract

Diverse bacteria and fungi oxidize Mn(II) enzymatically and produce insoluble Mn(III, IV) oxides, and these organisms are considered to be the primal agents for the occurrence of natural Mn oxide phases in most environments. Biogenic Mn oxides have a high sorption capacity for metal cations and an ability to oxidize numerous inorganic and organic compounds, owing to their structural and redox features. Thus, the microbial process is of significance in both biogeochemical and biotechnological contexts. In this article we summarize the enzymatic Mn(II) oxidation and interactions of biogenic Mn oxides with toxic metal and metalloid ions. Although Mn oxide formation by fungi has not been fully characterized yet, recent researches with ascomycetes emphasize the similarity between the bacterial and fungal Mn(II) oxidation with respect to the involved catalyst (<i>i.e.</i>, multicopper oxidase-type enzymes) and the reaction product [<i>i.e.</i>, layer-type Mn(IV) oxides]. Laboratory cultures of bacterial and fungal Mn oxidizers are expected to provide fundamental knowledge in their potential use for remediation of environments and effluents contaminated with toxic metal(loid) ions.<br>

Journal

  • Journal of Bioscience and Bioengineering

    Journal of Bioscience and Bioengineering 104(1), 1-8, 2007-07-25

    The Society for Biotechnology, Japan

References:  71

Cited by:  3

Codes

  • NII Article ID (NAID)
    110006368800
  • NII NACSIS-CAT ID (NCID)
    AA11307678
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    13891723
  • NDL Article ID
    8828150
  • NDL Source Classification
    ZP15(科学技術--化学・化学工業--醗酵・微生物工学)
  • NDL Call No.
    Z53-S65
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE  Crossref 
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