Influence of geogenic factors on microbial communities in metallogenic Australian soils

Reith, Frank, Brugger, Joel, Zammit, Carla M., Gregg, Adrienne L., Goldfarb, Katherine C., Andersen, Gary L., Desantis, Todd Z., Piceno, Yvette M., Brodie, Eoin L., Lu, Zhenmei, He, Zhili, Zhou, Jizhong and Wakelin, Steven A. (2012) Influence of geogenic factors on microbial communities in metallogenic Australian soils. ISME Journal, 6 11: 2107-2118. doi:10.1038/ismej.2012.48


Author Reith, Frank
Brugger, Joel
Zammit, Carla M.
Gregg, Adrienne L.
Goldfarb, Katherine C.
Andersen, Gary L.
Desantis, Todd Z.
Piceno, Yvette M.
Brodie, Eoin L.
Lu, Zhenmei
He, Zhili
Zhou, Jizhong
Wakelin, Steven A.
Title Influence of geogenic factors on microbial communities in metallogenic Australian soils
Journal name ISME Journal   Check publisher's open access policy
ISSN 1751-7362
1751-7370
Publication date 2012-01-01
Year available 2012
Sub-type Article (original research)
DOI 10.1038/ismej.2012.48
Volume 6
Issue 11
Start page 2107
End page 2118
Total pages 12
Place of publication London, United Kingdom
Publisher Nature Publishing
Language eng
Abstract Links between microbial community assemblages and geogenic factors were assessed in 187 soil samples collected from four metal-rich provinces across Australia. Field-fresh soils and soils incubated with soluble Au(III) complexes were analysed using three-domain multiplex-terminal restriction fragment length polymorphism, and phylogenetic (PhyloChip) and functional (GeoChip) microarrays. Geogenic factors of soils were determined using lithological-, geomorphological-and soil-mapping combined with analyses of 51 geochemical parameters. Microbial communities differed significantly between landforms, soil horizons, lithologies and also with the occurrence of underlying Au deposits. The strongest responses to these factors, and to amendment with soluble Au(III) complexes, was observed in bacterial communities. PhyloChip analyses revealed a greater abundance and diversity of Alphaproteobacteria (especially Sphingomonas spp.), and Firmicutes (Bacillus spp.) in Au-containing and Au(III)-amended soils. Analyses of potential function (GeoChip) revealed higher abundances of metal-resistance genes in metal-rich soils. For example, genes that hybridised with metal-resistance genes copA, chrA and czcA of a prevalent aurophillic bacterium, Cupriavidus metallidurans CH34, occurred only in auriferous soils. These data help establish key links between geogenic factors and the phylogeny and function within soil microbial communities. In particular, the landform, which is a crucial factor in determining soil geochemistry, strongly affected microbial community structures.
Keyword Australia
Bacteria
Gold
Landform
Microarray
Soil
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID LP100200212
214
DE-AC02-5CH11231
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Earth Sciences Papers
 
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