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Analysis of photosynthetic picoeukaryote community structure along an extended Ellett Line transect in the northern North Atlantic reveals a dominance of novel prymnesiophyte and prasinophyte phylotypes

Analysis of photosynthetic picoeukaryote community structure along an extended Ellett Line transect in the northern North Atlantic reveals a dominance of novel prymnesiophyte and prasinophyte phylotypes
Analysis of photosynthetic picoeukaryote community structure along an extended Ellett Line transect in the northern North Atlantic reveals a dominance of novel prymnesiophyte and prasinophyte phylotypes
Photosynthetic picoeukaryotes (PPEs) of a size <3 ?m can contribute significantly to primary production. Here, PPE community structure was analysed along an extended Ellett Line transect, an area in the North Atlantic well studied by physical oceanographers but largely neglected in the field of microalgal ecology. Distribution patterns of specific PPE classes were determined using dot-blot hybridization analysis, while the taxonomic composition of specific PPE classes was revealed by phylogenetic analysis of plastid 16S rRNA gene sequences. In addition, we performed fluorescent in situ hybridization (FISH) analysis of seawater samples collected along the transect to provide a PCR-independent survey of class level PPE distribution patterns. We found the PPE community was dominated by members of the Prymnesiophyceae, Prasinophyceae and Mamiellophyceae. Interestingly, phylogenetic analysis revealed several novel Prymnesiophyceae and Prasinophyceae phylotypes (with only 85–96% identity to neighbouring sequences) within lineages for which cultured counterparts are unknown.
Photosynthetic picoeukaryotes, Community structure, Prymnesiophytes, Prasinophytes
0967-0637
733-744
Kirkham, Amy R.
8cb13d52-8333-4997-99e4-f2a048a72c1e
Jardillier, Ludwig E.
66cafc57-e5d3-4ea3-98db-d009ee5514ae
Holland, Ross
bad57856-1362-4bec-b0b8-b600d9de6b3a
Zubkov, Mikhail V.
b1dfb3a0-bcff-430c-9031-358a22b50743
Scanlan, Dave J.
a65fd107-a314-4e42-b473-05f67a01accc
Kirkham, Amy R.
8cb13d52-8333-4997-99e4-f2a048a72c1e
Jardillier, Ludwig E.
66cafc57-e5d3-4ea3-98db-d009ee5514ae
Holland, Ross
bad57856-1362-4bec-b0b8-b600d9de6b3a
Zubkov, Mikhail V.
b1dfb3a0-bcff-430c-9031-358a22b50743
Scanlan, Dave J.
a65fd107-a314-4e42-b473-05f67a01accc

Kirkham, Amy R., Jardillier, Ludwig E., Holland, Ross, Zubkov, Mikhail V. and Scanlan, Dave J. (2011) Analysis of photosynthetic picoeukaryote community structure along an extended Ellett Line transect in the northern North Atlantic reveals a dominance of novel prymnesiophyte and prasinophyte phylotypes. Deep Sea Research Part I: Oceanographic Research Papers, 58 (7), 733-744. (doi:10.1016/j.dsr.2011.05.004).

Record type: Article

Abstract

Photosynthetic picoeukaryotes (PPEs) of a size <3 ?m can contribute significantly to primary production. Here, PPE community structure was analysed along an extended Ellett Line transect, an area in the North Atlantic well studied by physical oceanographers but largely neglected in the field of microalgal ecology. Distribution patterns of specific PPE classes were determined using dot-blot hybridization analysis, while the taxonomic composition of specific PPE classes was revealed by phylogenetic analysis of plastid 16S rRNA gene sequences. In addition, we performed fluorescent in situ hybridization (FISH) analysis of seawater samples collected along the transect to provide a PCR-independent survey of class level PPE distribution patterns. We found the PPE community was dominated by members of the Prymnesiophyceae, Prasinophyceae and Mamiellophyceae. Interestingly, phylogenetic analysis revealed several novel Prymnesiophyceae and Prasinophyceae phylotypes (with only 85–96% identity to neighbouring sequences) within lineages for which cultured counterparts are unknown.

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More information

Published date: July 2011
Keywords: Photosynthetic picoeukaryotes, Community structure, Prymnesiophytes, Prasinophytes
Organisations: Marine Biogeochemistry

Identifiers

Local EPrints ID: 195759
URI: http://eprints.soton.ac.uk/id/eprint/195759
ISSN: 0967-0637
PURE UUID: cfffb11d-0c37-40ad-a9bb-7a106f03c0d8

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Date deposited: 26 Aug 2011 10:47
Last modified: 14 Mar 2024 04:05

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Contributors

Author: Amy R. Kirkham
Author: Ludwig E. Jardillier
Author: Ross Holland
Author: Mikhail V. Zubkov
Author: Dave J. Scanlan

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