The distribution and activity of sulphate reducing bacteria in estuarine and coastal marine sediments |
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Authors: | Purdy K J Embley T M Nedwell D B |
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Affiliation: | (1) Department of Zoology, Natural History Museum, Cromwell Rd, London, SW7 5BD, UK;(2) Present address: School of Animal and Microbial Sciences, University of Reading, P.O. Box 228, Reading, RG6 6AJ, UK |
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Abstract: | Sulphate-reducing bacteria (SRB) play a vital role both the carbon and sulphur cycles and thus are extremely important components of the global microbial community. However, it is clear that the ecology, the distribution and activity of different SRB groups is poorly understood. Probing of rRNA suggests that different sediments have distinctly different patterns of SRB with complex factors controlling the activity of these organisms. The linking of community structure and function using sediment slurry microcosms suggests that certain groups of SRB, e.g., Desulfobacter and Desulfobulbus, can be linked to the use of specific substrates in situ. However, it is still unclear what environmental substrates are utilised by the majority of known SRBs. The work to date has greatly enhanced our understanding of the ecology of these organisms and is beginning to suggest patterns in their distribution and activity that may be relevant to understanding microbial ecology in general. This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | 16S rRNA estuarine sediments oligonucleotide probes Sulphate reducing bacteria |
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