Predominance of Roseobacter, Sulfitobacter, Glaciecola and Psychrobacter in seawater collected off Ushuaia, Argentina, Sub-Antarctica

Prabagaran, Solai Ramatchandirane ; Manorama, Ruth ; Delille, Daniel ; Shivaji, Sisinthy (2007) Predominance of Roseobacter, Sulfitobacter, Glaciecola and Psychrobacter in seawater collected off Ushuaia, Argentina, Sub-Antarctica FEMS Microbiology Ecology, 59 (2). pp. 342-355. ISSN 0168-6496

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1574-...

Related URL: http://dx.doi.org/10.1111/j.1574-6941.2006.00213.x

Abstract

Bacterial diversity in sub-Antarctic seawater, collected off Ushuaia, Argentina, was examined using a culture independent approach. The composition of the 16S rRNA gene libraries from seawater and seawater contaminated with the water soluble fraction of crude oil was statistically different (P value 0.001). In both libraries, clones representing the Alphaproteobacteria, Gammaproteobacteria, the Cytophaga-Flavobacterium-Bacteroidetes group and unculturable bacteria were dominant. Clones associated with the genera Roseobacter, Sulfitobacter, Staleya, Glaciecola, Colwellia, Marinomonas, Cytophaga and Cellulophaga were common to both the libraries. However, clones associated with Psychrobacter, Arcobacter, Formosa algae, Polaribacter, Ulvibacter and Tenacibaculum were found only in seawater contaminated with hydrocarbons. Further, the percentage of clones of Roseobacter, Sulfitobacter and Glaceicola was high in seawater (43%, 90% and 12% respectively) compared to seawater contaminated with hydrocarbons (35%, 4% and 9% respectively). One of the clones F2C63 showed 100% similarity with Marinomonas ushuaiensis a bacterium identified by us from the same site.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Ushuaia; Sub-Antarctica; Bacterial Biodiversity; 16S rRNA Gene Clones; Psychrophiles
ID Code:64337
Deposited On:08 Oct 2011 04:08
Last Modified:08 Oct 2011 04:08

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