期刊
MICROBIOLOGICAL RESEARCH
卷 165, 期 7, 页码 523-530出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.micres.2009.11.005
关键词
Antarctica; Bacterial community composition; Leptolyngbya Cyanobacteria); delta-Proteobacteria; Soil water and chemistry
类别
资金
- Natural Environment Research Council
- Natural Environment Research Council [bas0100025] Funding Source: researchfish
- NERC [bas0100025] Funding Source: UKRI
Bacterial community composition was determined by culture-independent PCR-based methods in two soils differing markedly in their water, C, N and P contents sampled from Mars Oasis on Alexander Island, western Antarctic Peninsula. 16S rRNA sequences of the phyla Actinobacteria, Cyanobacteria, alpha-Proteobacteria and Acidobacteria were commonly (>8% frequency) obtained from soil. Those of beta-, gamma- and delta-Proteobacteria, Chloroflexi, Bacteroidetes, Verrucomicrobia, Planctomycetes, Gemmatimonadetes and Firmicutes were less frequent. Comparisons of slopes of collector's curves and the Shannon-Weiner diversity index indicated no difference in overall bacterial diversity between the two soils, although sequences of delta-Proteobacteria and the cyanobacterial genus Leptolyngbya were more commonly derived from the soil with the higher water and nutrient content. The data suggest that different levels of soil water, C, N and P have only a minor effect on the bacterial community composition of maritime Antarctic soils. (C) 2009 Elsevier GmbH. All rights reserved.
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