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. and 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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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.
|Keywords:||flow cytometry sorting, cell metabolic activity, SAR11 clade, CARD-FISH, radioactive tracer labelling, Atlantic Ocean|
|Subjects:||Q Science > QH Natural history > QH301 Biology|
|Divisions:||University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
University Structure - Pre August 2011 > National Oceanography Centre (NERC)
|Date Deposited:||02 Feb 2007|
|Last Modified:||01 Jun 2011 04:39|
|Contributors:||Mary, I. (Author)
Heywood, J.L. (Author)
Fuchs, B.M. (Author)
Amann, R. (Author)
Tarran, G.A. (Author)
Burkill, P.H. (Author)
Zubkov, M.V. (Author)
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