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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Bacterial diversity in three different antarctic cold desert mineral soils
Microbial Ecology, Volume 51, No. 4, Year 2006
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Description
A bacterial phylogenetic survey of three environmentally distinct Antarctic Dry Valley soil biotopes showed a high proportion of so-called "uncultured" phylotypes, with a relatively low diversity of identifiable phylotypes. Cyanobacterial phylotypic signals were restricted to the high-altitude sample, whereas many of the identifiable phylotypes, such as the members of the Actinobacteria, were found at all sample sites. Although the presence of Cyanobacteria and Actinobacteria is consistent with previous culture-dependent studies of microbial diversity in Antarctic Dry Valley mineral soils, many phylotypes identified by 16S rDNA analysis were of groups that have not hitherto been cultured from Antarctic soils. The general belief that such "extreme" environments harbor a relatively low species diversity was supported by the calculation of diversity indices. The detection of a substantial number of uncultured bacterial phylotypes showing low BLAST identities (<95%) suggests that Antarctic Dry Valley mineral soils harbor a pool of novel psychrotrophic taxa. © Springer Science+Business Media, Inc. 2006.
Authors & Co-Authors
Smith, Jacques J.
South Africa, Bellville
University of the Western Cape
Tow, Lemese Ah
South Africa, Bellville
University of the Western Cape
Stafford, William Herbert Lee
South Africa, Bellville
University of the Western Cape
Cary, Stephen Craig
New Zealand, Hamilton
The University of Waikato
United States, Newark
College of Earth, Ocean and Environment
Cowan, Don A.
South Africa, Bellville
University of the Western Cape
Statistics
Citations: 226
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1007/s00248-006-9022-3
ISSN:
00953628
Study Design
Cross Sectional Study
Study Approach
Quantitative