Effects of small increases in copper levels on culturable basidiomycetous yeasts in low-nutrient soils

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dc.contributor.authorVreulink J.-M.
dc.contributor.authorStone W.
dc.contributor.authorBotha A.
dc.date.accessioned2011-05-15T15:59:22Z
dc.date.available2011-05-15T15:59:22Z
dc.date.issued2010
dc.description.abstractAims: Investigating the effect of perturbations, with relatively low Cu concentrations, on yeast community composition in low-nutrient virgin soil. Methods and Results: Culturable soil yeast populations were monitored at an experimental site treated with the fungicide copper oxychloride (10 mg Cu per kg soil). Yeast numbers were unaffected by additional Cu; however, a shift in yeast community composition from Hymenomycetes to Urediniomycetes species occurred. Subsequent growth experiments conducted with a synthetic liquid medium revealed that hymenomycetous and urediniomycetous yeasts were affected differently by 1 and 10 mg l-1 Cu. Soil microcosm experiments then indicated that additional 10 mg kg-1 Cu may improve the competitive ability of urediniomycetous yeasts in the presence of hymenomycetous yeasts. Conclusions: The shift from hymenomycetous to urediniomycetous yeasts, as a result of slightly increased soil Cu levels, may be because of hymenomycetous yeasts being more sensitive to elevated Cu levels and urediniomycetous yeasts having an improved competitive ability in the presence of elevated Cu levels. Significance and Impact of the Study: Yeast community composition of pristine low-nutrient soils may change as a result of perturbations with relatively low concentrations of Cu. Urediniomycetous yeasts should be studied as potential bio-indicators of Cu perturbations. © 2010 The Society for Applied Microbiology.
dc.description.versionArticle
dc.identifier.citationJournal of Applied Microbiology
dc.identifier.citation109
dc.identifier.citation4
dc.identifier.issn13645072
dc.identifier.other10.1111/j.1365-2672.2010.04770.x
dc.identifier.urihttp://hdl.handle.net/10019.1/11147
dc.subjectcopper
dc.subjectbioindicator
dc.subjectcommunity composition
dc.subjectcopper
dc.subjectfungicide
dc.subjectmicrocosm
dc.subjectsoil microorganism
dc.subjectsoil nutrient
dc.subjectyeast
dc.subjectarticle
dc.subjectBasidiomycetes
dc.subjectcontrolled study
dc.subjectfungal community
dc.subjectfungus growth
dc.subjectfungus isolation
dc.subjectnonhuman
dc.subjectnucleotide sequence
dc.subjectnutrient supply
dc.subjectsoil microflora
dc.subjectHymenomycetes
dc.subjectUrediniomycetes
dc.titleEffects of small increases in copper levels on culturable basidiomycetous yeasts in low-nutrient soils
dc.typeArticle
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