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SAR11 dominance among metabolically active low nucleic acid bacterioplankton in surface waters along an Atlantic Meridional Transect

Mary, I.; Heywood, J.L.; Fuchs, B.M.; Amann, R.; Tarran, G.A.; Burkill, P.H.; Zubkov, M.V.. 2006 SAR11 dominance among metabolically active low nucleic acid bacterioplankton in surface waters along an Atlantic Meridional Transect. Aquatic Microbial Ecology, 45 (2). 107-113.

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Abstract/Summary

Low nucleic acid (LNA) bacterioplankton (sorted by flow cytometry) were characterised in surface water samples along a meridional transect from 48°N to 40° S across the Atlantic Ocean. The LNA bacterioplankton abundance and metabolic activity, assessed by their 35S-methionine uptake rate, were similar along the transect, representing 36 ± 6 and 36 ± 11% of total bacterioplankton, respectively. Fluorescence in situ hybridisation analysis of the flow-sorted cells revealed that the LNA bacterioplankton population was dominated (59 ± 4%) by and contained virtually all the identifiable SAR11 clade cells throughout the Atlantic Ocean. Therefore, the present study provides ecological characterisation of this flow-sorted group and suggests both phylogenetic and functional constancy of the LNA bacterioplankton at the basin-scale.

Item Type: Publication - Article
ISSN: 0948-3055
Additional Keywords: flow cytometry sorting, cell metabolic activity, SAR11 clade, CARD-FISH, radioactive tracer labelling, Atlantic Ocean
Date made live: 02 Feb 2007 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/143952

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