Sorption of heavy metals by the soil fungi Aspergillus niger and Mucor rouxii

Mullen, Michael D.; Wolf, D. C.; Beveridge, Terry J.; Bailey, George W.

doi:10.1016/0038-0717(92)90268-3

Cited by 133 publications

(53 citation statements)

References 21 publications

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“…In accordance with Ledin et al (1999) and Chanmugatas and Bollag (1987) the microbial biomass could bind into its cell walls the part of heavy metals which could be released a�er the death of microbial communities and their subsequent autolysis. The heavy metal binding onto microbial cells was described also by Mullen et al (1992). In our experiment, the highest heavy metal content was o�en obtained at the second day of incubation when microbial biomass already decreased a�er its maximum which was reached during the first day of the experiment.…”

Section: Resultssupporting

confidence: 65%

The availability of Cd, Pb and Zn and their relationships with soil pH and microbial biomass in soils amended by natural clinoptilolite

Mühlbachová¹,

Šimon²,

Pechová³

2005

Plant Soil Environ.

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The relationships among soil microbial biomass, pH and available of heavy metal fractions were evaluated in longterm contaminated soils during an incubation experiment with the amendment of zeolite (natural clinoptilolite) and the subsequent addition of glucose. The values of pH a�er the addition of glucose decreased during the first day of incubation approximately at about one unit and corresponded with the maximum increase of microbial biomass. The available heavy metal contents extracted by H 2 O, 1 mol/l NH 4 NO 3 and 0.005 mol/l DTPA increased during the first two days of incubation. Only a few significant relationships were found between the available metal contents and pH or microbial biomass. This fact could be ascribed to the different dynamics of the microbial biomass, pH and metal availability a�er glucose addition, when the highest metal contents during the incubation were usually reached one day later in respect to the greatest changes of pH and microbial activity. In comparison to soils without zeolite addition, the variants with natural clinoptilolite showed lower heavy metal contents in all used extractants with the exception of Cd which in H 2 O extracts tended to increase.

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Section: Resultssupporting

confidence: 65%

The availability of Cd, Pb and Zn and their relationships with soil pH and microbial biomass in soils amended by natural clinoptilolite

Mühlbachová¹,

Šimon²,

Pechová³

2005

Plant Soil Environ.

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“…Mucor rouxii (1-3 mg Cu g À1 ) (Mullen et al, 1992;Kapoor and Viraraghavan, 1995), Rhizopus arrhizus (1.5 mg Cu g À1 ), Trichoderma viride (2.2 mg Cu g À1 ) (Morley and Gadd, 1995) and G. mosseae (3-14 mg Cu g À1 ) (Gonzalez-Chavez et al, 2002). A higher Cu-sorption capacity was observed in the cell walls of mycorrhizal roots compared to non-mycorrhizal roots, which may reflect differences in cell wall chemistry (Gadd, 1993;Kapoor and Viraraghavan, 1995).…”

Section: Characteristics Of Cu Binding In Cell Wallsmentioning

confidence: 99%

Arbuscular mycorrhizal colonisation increases copper binding capacity of root cell walls of Oryza sativa L. and reduces copper uptake

Zhang

Lin

Gao

et al. 2009

Soil Biology and Biochemistry

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a b s t r a c tThere is evidence that colonisation by mycorrhizal fungi can protect host plants from toxic concentrations of heavy metals. The mechanism by which protection is provided by the fungus for any particular metal is poorly understood. Rice (Oryza sativa L.) plants were inoculated with Glomus mosseae and grown for 4 weeks to ensure strong colonisation. The plants were then exposed to low to toxic concentrations of copper (Cu) and the uptake and distribution were examined. The effect of mycorrhizal colonisation on the cell wall composition and Cu binding capacity of roots was also investigated. Mycorrhizal plants showed moderate reductions in Cu concentrations in roots but large reductions in shoots. In roots, mycorrhizal plants accumulated more Cu in cell walls but much less in the symplasm compared to nonmycorrhizal plants. The differences in cell wall binding of Cu could be partly explained by changes in the composition of the cell wall. The mechanistic basis for the reduced Cu accumulation and the potential beneficial consequences of mycorrhizal associations on plant growth in Cu toxic soil are discussed.

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“…Metabolismindependent association of metal species to fungal walls may include ion exchange, adsorption, complexation, precipitation and crystallization (Mullen et al, 1992). 'Biosorption' is a term that is frequently used to describe such non-directed physico-chemical interactions between metals (including radionuclide) species and microbial biomass, particularly in a biotechnological context (Shumate & Strandberg, 1985).…”

Section: Metal Binding To Cell Wallsmentioning

confidence: 99%

Interactions of fungi with toxic metals

1993

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SUMMARY This review details the major interactions of fungi with toxic metal species. Physico‐chemical and biological aspects are discussed including definitions and classification of metals in biological contexts, mechanisms of metal fungitoxicity, resistance and tolerance, environmental influences and the occurrence of fungi in metal‐polluted habitats. Cellular interactions include extracellular precipitation and complexation, binding to cell walls, transport of monovalent and divalent metal cations, intracellular fates of toxic metal species (including metal‐binding proteins and peptides, and vacuolar compartmentation), and metal transformations including organometal(loid) synthesis. Significant interactions between metals and mycorrhizal fungi and macrofungi are summarized with reference to the amelioration of plant phytotoxicity and metal accumulation respectively. Biotechnological aspects of metal‐fungal interactions relate to the biological treatment of metal‐contaminated effluents and waste streams for metal removal/recovery and environmental protection.

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Sorption of heavy metals by the soil fungi Aspergillus niger and Mucor rouxii

Cited by 133 publications

References 21 publications

The availability of Cd, Pb and Zn and their relationships with soil pH and microbial biomass in soils amended by natural clinoptilolite

The availability of Cd, Pb and Zn and their relationships with soil pH and microbial biomass in soils amended by natural clinoptilolite

Arbuscular mycorrhizal colonisation increases copper binding capacity of root cell walls of Oryza sativa L. and reduces copper uptake

Interactions of fungi with toxic metals

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