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High 16S rDNA bacterial diversity in glacial meltwater lake sediment, Bratina Island, Antarctica
University College London, Gower St., London, United Kingdom .ORCID iD: 0000-0002-5802-5126
2003 (English)In: Extremophiles, ISSN 1431-0651, E-ISSN 1433-4909, Vol. 7, no 4, 275-282 p.Article in journal (Refereed) Published
Abstract [en]

The microbial diversity in maritime meltwater pond sediments from Bratina Island, Ross Sea, Antarctica was investigated by 16S rDNA-dependent molecular phylogeny. Investigations of the vertical distribution, phylogenetic composition, and spatial variability of Bacteria and Archaea in the sediment were carried out. Results revealed the presence of a highly diverse bacterial population and a significantly depth-related composition. Assessment of 173 partial 16S rDNA clones analyzed by amplified rDNA restriction analysis (ARDRA) using tetrameric restriction enzymes (HinP1I 5'GdelCGC3'and Msp I. 5'CdelCGG3', BioLabs) revealed 153 different bacterial OTUs (operational taxonomic units). However, only seven archaeal OTUs were detected, indicating low archaeal diversity. Based on ARDRA results, 30 bacterial clones were selected for sequencing and the sequenced clones fell into seven major lineages of the domain Bacteria; the alpha, gamma, and delta subdivisions of Proteobacteria, the Cytophaga-Flavobacterium-Bacteroides, the Spirochaetaceae, and the Actinobacteria. All of the archaeal clones sequenced belonged to the group Crenarchaeota and phylogenetic analysis revealed close relationships with members of the deep-branching Group 1 Marine Archaea.

Place, publisher, year, edition, pages
Japan: Springer Japan KK , 2003. Vol. 7, no 4, 275-282 p.
Keyword [en]
16S rDNA PCR, Antarctica, Archaea, ARDRA, environmental bacteria, microbial diversity, sediment
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:sh:diva-6196DOI: 10.1007/s00792-003-0321-zISI: 000184758800003PubMedID: 12910387Scopus ID: 2-s2.0-2442637807OAI: oai:DiVA.org:sh-6196DiVA: diva2:397118
Available from: 2011-02-11 Created: 2011-02-11 Last updated: 2016-10-07Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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