Heavy metal tolerance and biotransformation of toxic metal compounds by new isolates of wood-rotting fungi from Thailand

Benjawan Kaewdoung; Thanawat Sutjaritvorakul; Geoffrey M. Gadd; Anthony J S Whalley; Prakitsin Sihanonth

doi:10.1080/01490451.2015.1048394

Heavy metal tolerance and biotransformation of toxic metal compounds by new isolates of wood-rotting fungi from Thailand

Benjawan Kaewdoung, Thanawat Sutjaritvorakul (Lead / Corresponding author), Geoffrey M. Gadd, Anthony J S Whalley, Prakitsin Sihanonth

Molecular Microbiology

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Eighteen isolates of wood-rotting fungi isolated from Thailand were screened for the ability to produce metal-containing crystals from zinc, copper, cadmium and lead salts-amended culture medium. Five isolates (MR40, KYO, WR3, WR4 and WR5) were able to produce mycogenic crystals in 0.5% (w/v) heavy metal compound amended plates. The crystals were further investigated by scanning electron microscopy equipped with energy dispersive X-ray microanalysis (SEM-EDXA) and identified by X-ray powder diffraction (XRPD). The selected fungi were found to be capable of transforming zinc sulfate (ZnSO₄·7H₂O) into zinc oxalate dihydrate (C₂O₂Zn·2H₂O), copper sulfate (CuSO₄·5H₂O) into copper oxalate hydrate (C₂CuO₄·xH₂O), cadmium sulfate (3CdSO₄·8H₂O) into cadmium oxalate trihydrate (C₂CdO₄·3H₂O) and lead nitrate (Pb(NO₃)₂) into lead oxalate (PbC₂O₄). Two of the selected strains (Fomitopsis cf. meliae and Ganoderma aff. steyaertanum) have not been previously reported to have heavy metal compound transformation abilities. These results provide further evidence that wood-rotting fungi can remove heavy metals from a metal-amended substrate by precipitation as metal oxalates: wood-rotting fungi could therefore be applied for detoxification of heavy metal pollution.

Original language	English
Pages (from-to)	283-288
Number of pages	6
Journal	Geomicrobiology Journal
Volume	33
Issue number	3-4
Early online date	25 Feb 2016
DOIs	https://doi.org/10.1080/01490451.2015.1048394
Publication status	Published - 15 Mar 2016

Keywords

Bioremediation
biotransformation
heavy metal
wood-rotting fungi

ASJC Scopus subject areas

Earth and Planetary Sciences (miscellaneous)
Microbiology
General Environmental Science
Environmental Chemistry

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10.1080/01490451.2015.1048394

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title = "Heavy metal tolerance and biotransformation of toxic metal compounds by new isolates of wood-rotting fungi from Thailand",

abstract = "Eighteen isolates of wood-rotting fungi isolated from Thailand were screened for the ability to produce metal-containing crystals from zinc, copper, cadmium and lead salts-amended culture medium. Five isolates (MR40, KYO, WR3, WR4 and WR5) were able to produce mycogenic crystals in 0.5% (w/v) heavy metal compound amended plates. The crystals were further investigated by scanning electron microscopy equipped with energy dispersive X-ray microanalysis (SEM-EDXA) and identified by X-ray powder diffraction (XRPD). The selected fungi were found to be capable of transforming zinc sulfate (ZnSO4·7H2O) into zinc oxalate dihydrate (C2O2Zn·2H2O), copper sulfate (CuSO4·5H2O) into copper oxalate hydrate (C2CuO4·xH2O), cadmium sulfate (3CdSO4·8H2O) into cadmium oxalate trihydrate (C2CdO4·3H2O) and lead nitrate (Pb(NO3)2) into lead oxalate (PbC2O4). Two of the selected strains (Fomitopsis cf. meliae and Ganoderma aff. steyaertanum) have not been previously reported to have heavy metal compound transformation abilities. These results provide further evidence that wood-rotting fungi can remove heavy metals from a metal-amended substrate by precipitation as metal oxalates: wood-rotting fungi could therefore be applied for detoxification of heavy metal pollution.",

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AU - Whalley, Anthony J S

AU - Sihanonth, Prakitsin

PY - 2016/3/15

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Heavy metal tolerance and biotransformation of toxic metal compounds by new isolates of wood-rotting fungi from Thailand

Abstract

Keywords

ASJC Scopus subject areas

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COG3: The Geology, Geometallurgy and Geomicrobiology of Cobalt Resources Leading to New Product Streams (joint with Natural History Museum and Universities of Manchester, Bangor, Exeter, Loughborough and Southampton and Industrial Partner)

Tellurium and Selenium Cycling and Supply (Joint with Universities of Leicester, Durham, Edinburgh, Cardiff, Aberdeen and Open University and Natural History Museum)

Cite this

Heavy metal tolerance and biotransformation of toxic metal compounds by new isolates of wood-rotting fungi from Thailand

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Projects

COG3: The Geology, Geometallurgy and Geomicrobiology of Cobalt Resources Leading to New Product Streams (joint with Natural History Museum and Universities of Manchester, Bangor, Exeter, Loughborough and Southampton and Industrial Partner)

Tellurium and Selenium Cycling and Supply (Joint with Universities of Leicester, Durham, Edinburgh, Cardiff, Aberdeen and Open University and Natural History Museum)

Cite this