Copper uptake by yeast-like cells, hyphae, and chlamydospores of Aureobasidium pullulans

Gadd, Geoffrey M.; Mowll, J.L.

doi:10.1016/0147-5975(85)90019-2

Cited by 74 publications

(33 citation statements)

References 30 publications

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“…Metal effects in fungi can also vary a great deal between organisms, strains, the stage of growth and different vegetative and reproductive forms of the same organism (Gadd and Mowll, 1985;Sabie and Gadd, 1990). This was observed in the present study since some fungi species were found in less metal contaminated sites but were not observed in highly metal contaminated sites.…”

Section: Liming Soil Metal Content and Fungi Abundancesupporting

confidence: 62%

Assessing Soil Respiration as an Indicator of Soil Microbial Activity in Reclaimed Metal Contaminated Lands

Goupil

Nkongolo

2014

American Journal of Environmental Sciences

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Mining, roasting as well as smelting of these elements have caused sulphur dioxide fumigations and metal particulate depositions which have led to various detrimental effects on the overall environmental quality of the Greater Sudbury region. Soil amendment and revegetation within the Greater Sudbury Region were initiated to restore the damage land. Several methods have been used to assess the progress made toward full ecosystem recovery. Soil respiration rates are particularly critical in the assessment of soil health. They reflect the complete extent of biological activity of living microorganisms in the soil. Bacterial and fungal the main biological soil components are functionally important and must be properly determined. The objective of the present study was to measure soil respiration and health in limed and unlimed areas in the Northern Ontario (Canada) region. The results confirm that the liming did maintain an increase in soil pH from extremely acid to slightly acid, even 30 to 40 years after dolostone applications. Fungi were more abundant in limed sites compared to unlimed areas. Soil respiration based on CO 2 rate followed the same trend. Respiration rates for the reference sites were similar to those documented for the limed areas. Summer soil respiration rates were associated (r = 0.50) with total fungal abundance in the targeted sites. Overall, the Solvita test of assessing soil respiration and determining microbial mass and soil quality is a reliable and cost effective method.

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Section: Liming Soil Metal Content and Fungi Abundancesupporting

confidence: 62%

Assessing Soil Respiration as an Indicator of Soil Microbial Activity in Reclaimed Metal Contaminated Lands

Goupil

Nkongolo

2014

American Journal of Environmental Sciences

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“…For instance, eumelanin has been reported to have cation exchange and metal sequestration properties (McLean et al, 1998;White, 1958). Cell cultures of the fungus Aureobasidium pullulans that produce eumelanin also show increased adsorption to numerous metals and tributyltin chloride relative to non-melanized cells (Gadd et al, 1990;Gadd and Mowll, 1985;Gadd et al, 1987). Uranium accumulation has also been reported in the eumelanin containing lichen Trapelia involuta when grown on uranium minerals (McLean et al, 1998).…”

Section: Microbial Exploitation Of Pyomelaninmentioning

confidence: 89%

Properties and Function of Pyomelanin

Turick¹,

Knox²,

Becnel³

et al. 2010

Biopolymers

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“…Hence, microbial melanin has a role to play in bioremediation (McLean et al, 1998) and melanin production offers tremendous untapped potential for immobilization of metals and radionuclides because of its electron shuttling (Turick et al, 2002) and metal sequestration capacities (McLean et al, 1998). For instance microbial melanin is responsible for enhanced adsorption of numerous metals and tributyltin chloride with the fungus Aureobasidium pullulans (Gadd and Mowll, 1985;Gadd et al, 1987Gadd et al, , 1990, Fe(III) reduction and subsequent Fe(II) assimilation by the yeast Cryptococcus neoformans (Nyhus et al, 1997) and U accumulation by a melanin-containing fungus associated with the lichen Trapelia involuta (McLean et al, 1998).…”

Section: Introductionmentioning

confidence: 97%

In situ uranium stabilization by microbial metabolites

Turick

Knox

Leverette

et al. 2008

Journal of Environmental Radioactivity

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Soil contaminated with U was the focus of this study in order to develop in-situ, U bio-immobilization technology. We have demonstrated microbial production of a metal chelating biopolymer, pyomelanin, in U contaminated soil from the Tims Branch area of the Department of Energy (DOE) Savannah River Site (SRS) as a result of tyrosine amendments. Bacterial densities of pyomelanin producers were >106 cells/g wet soil.Pyomelanin demonstrated U chelating and mineral binding capacities at pH 4 and 7. In laboratory studies, in the presence of goethite or illite, pyomelanin enhanced U sequestration by these minerals. Tyrosine amended soils in field tests demonstrated increased U sequestration capacity following pyomelanin production up to 13 months after tyrosine treatments.

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Copper uptake by yeast-like cells, hyphae, and chlamydospores of Aureobasidium pullulans

Cited by 74 publications

References 30 publications

Assessing Soil Respiration as an Indicator of Soil Microbial Activity in Reclaimed Metal Contaminated Lands

Assessing Soil Respiration as an Indicator of Soil Microbial Activity in Reclaimed Metal Contaminated Lands

Properties and Function of Pyomelanin

In situ uranium stabilization by microbial metabolites

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