University of Adelaide Library

Adelaide Research and Scholarship : Schools and Disciplines : School of Earth and Environmental Sciences : Geology & Geophysics : Geology & Geophysics publications

Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/74508

Type: Journal article
Title: Influence of geogenic factors on microbial communities in metallogenic Australian soils
Author: Reith, F.
Brugger, J.
Zammit, C.
Gregg, A.
Goldfarb, K.
Andersen, G.
DeSantis, T.
Piceno, Y.
Brodie, E.
Lu, Z.
He, Z.
Zhou, J.
Wakelin, S.
Citation: The ISME Journal, 2012; 6(11):2107-2118
Publisher: Nature Publishing Group
Issue Date: 2012
ISSN: 1751-7362
1751-7370
Statement of
Responsibility: 
Frank Reith, Joel Brugger, Carla M Zammit, Adrienne L Gregg, Katherine C Goldfarb, Gary L Andersen, Todd Z DeSantis, Yvette M Piceno, Eoin L Brodie, Zhenmei Lu, Zhili He, Jizhong Zhou and Steven A Wakelin
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.
Keywords: soil; landform; bacteria; gold; microarray; Australia
Rights: © 2012 International Society for Microbial Ecology All rights reserved 1751-7362/12
RMID: 0020122512
DOI: 10.1038/ismej.2012.48
Appears in Collections:Geology & Geophysics publications
Environment Institute publications
View citing articles in: Web of Science
Google Scholar
Scopus

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

© 2008 The University of Adelaide
library@adelaide.edu.au
CRICOS Provider Number 00123M
Service Charter | Copyright | Privacy | Disclaimer