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X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi

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X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi. / Fomina, Marina; Charnock, John; Bowen, Andrew D.; Gadd, Geoffrey M.

In: Environmental Microbiology, Vol. 9, No. 2, 2007, p. 308-321.

Research output: Contribution to journalArticle

Harvard

Fomina, M, Charnock, J, Bowen, AD & Gadd, GM 2007, 'X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi' Environmental Microbiology, vol 9, no. 2, pp. 308-321.

APA

Fomina, M., Charnock, J., Bowen, A. D., & Gadd, G. M. (2007). X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi. Environmental Microbiology, 9(2), 308-321doi: 10.1111/j.1462-2920.2006.01139.x

Vancouver

Fomina M, Charnock J, Bowen AD, Gadd GM. X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi. Environmental Microbiology. 2007;9(2):308-321.

Author

Fomina, Marina; Charnock, John; Bowen, Andrew D.; Gadd, Geoffrey M. / X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi.

In: Environmental Microbiology, Vol. 9, No. 2, 2007, p. 308-321.

Research output: Contribution to journalArticle

Bibtex - Download

@article{6bf688b61d1b42ddafded8f77325863c,
title = "X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi",
author = "Marina Fomina and John Charnock and Bowen, {Andrew D.} and Gadd, {Geoffrey M.}",
note = "dc.publisher: Wiley-Blackwell",
year = "2007",
volume = "9",
number = "2",
pages = "308--321",
journal = "Environmental Microbiology",
issn = "1462-2912",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - X-ray absorption spectroscopy (XAS) of toxic metal mineral transformations by fungi

A1 - Fomina,Marina

A1 - Charnock,John

A1 - Bowen,Andrew D.

A1 - Gadd,Geoffrey M.

AU - Fomina,Marina

AU - Charnock,John

AU - Bowen,Andrew D.

AU - Gadd,Geoffrey M.

PY - 2007

Y1 - 2007

N2 - Fungi can be highly efficient biogeochemical agents and accumulators of soluble and particulate forms of metals. This work aims to understand some of the physico-chemical mechanisms involved in toxic metal transformations focusing on the speciation of metals accumulated by fungi and mycorrhizal associations. The amorphous state or poor crystallinity of metal complexes within biomass and relatively low metal concentrations make the determination of metal speciation in biological systems a challenging problem but this can be overcome by using synchrotron-based element-specific X-ray absorption spectroscopy (XAS) techniques. In this research, we have exposed fungi and ectomycorrhizas to a variety of copper-, zinc- and lead-containing minerals. X-ray absorption spectroscopy studies revealed that oxygen ligands (phosphate, carboxylate) played a major role in toxic metal coordination within the fungal and ectomycorrhizal biomass during the accumulation of mobilized toxic metals. Coordination of toxic metals within biomass depended on the fungal species, initial mineral composition, the nitrogen source, and the physiological state/age of the fungal mycelium.

AB - Fungi can be highly efficient biogeochemical agents and accumulators of soluble and particulate forms of metals. This work aims to understand some of the physico-chemical mechanisms involved in toxic metal transformations focusing on the speciation of metals accumulated by fungi and mycorrhizal associations. The amorphous state or poor crystallinity of metal complexes within biomass and relatively low metal concentrations make the determination of metal speciation in biological systems a challenging problem but this can be overcome by using synchrotron-based element-specific X-ray absorption spectroscopy (XAS) techniques. In this research, we have exposed fungi and ectomycorrhizas to a variety of copper-, zinc- and lead-containing minerals. X-ray absorption spectroscopy studies revealed that oxygen ligands (phosphate, carboxylate) played a major role in toxic metal coordination within the fungal and ectomycorrhizal biomass during the accumulation of mobilized toxic metals. Coordination of toxic metals within biomass depended on the fungal species, initial mineral composition, the nitrogen source, and the physiological state/age of the fungal mycelium.

KW - X-ray absorption spectroscopy (XAS)

KW - Toxic metal

KW - Physico-chemical mechanisms

U2 - 10.1111/j.1462-2920.2006.01139.x

DO - 10.1111/j.1462-2920.2006.01139.x

M1 - Article

JO - Environmental Microbiology

JF - Environmental Microbiology

SN - 1462-2912

IS - 2

VL - 9

SP - 308

EP - 321

ER -

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