Genetic diversity and habitats of two enigmatic marine alveolate lineages

15 pages, 4 figures, 1 table

Detalles Bibliográficos
Autores: Groisillier, Agnès, Massana, Ramon, Valentin, Klaus, Vaulot, Daniel, Guillou, Laure
Tipo de recurso: artículo
Fecha de publicación:2006
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/27410
Acceso en línea:http://hdl.handle.net/10261/27410
Access Level:acceso abierto
Palabra clave:Alveolates
rRNA environmental sequences
Group I and Group II
Dinoflagellates
Syndiniales
Biogeography
rRNA
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spelling Genetic diversity and habitats of two enigmatic marine alveolate lineagesGroisillier, AgnèsMassana, RamonValentin, KlausVaulot, DanielGuillou, LaureAlveolatesrRNA environmental sequencesGroup I and Group IIDinoflagellatesSyndinialesBiogeographyrRNA15 pages, 4 figures, 1 tableSystematic sequencing of environmental SSU rDNA genes amplified from different marine ecosystems has uncovered novel eukaryotic lineages, in particular within the alveolate and stramenopile radiations. The ecological and geographic distribution of 2 novel alveolate lineages (called Group I and II in previous papers) is inferred from the analysis of 62 different environmental clone libraries from freshwater and marine habitats. These 2 lineages have been, up to now, retrieved exclusively from marine ecosystems, including oceanic and coastal waters, sediments, hydrothermal vents, and permanent anoxic deep waters and usually represent the most abundant eukaryotic lineages in environmental genetic libraries. While Group I is only composed of environmental sequences (118 clones), Group II contains, besides environmental sequences (158 clones), sequences from described genera (8) (Hematodinium and Amoebophrya) that belong to the Syndiniales, an atypical order of dinoflagellates exclusively composed of marine parasites. This suggests that Group II could correspond to Syndiniales, although this should be confirmed in the future by examining the morphology of cells from Group II. Group II appears to be abundant in coastal and oceanic ecosystems, whereas permanent anoxic waters and hydrothermal ecosystems are usually dominated by Group I. Based upon the similarity of partial sequences, we organized these 2 groups into clusters. The diversity of Group II (16 clusters) is wider than that of Group I (5 clusters). Two clusters from Group I have a widespread distribution and are found in all explored marine habitats. In contrast, all other clusters seem to be limited to specific marine habitats. For example, some clusters belonging to Group I and Group II are only detected in extreme environments (anoxic and hydrothermal vents), whereas many clusters from Group II have only been retrieved from coastal waters. We determined near-complete SSU rRNA gene sequences for 26 environmental clones, selected in order to obtain at least one complete sequence per cluster. Phylogenetic analyses (maximum likelihood, neighbor joining, maximum parsimony, and Bayesian reconstruction) based upon complete sequences all concurred to place both Group I and II as sister lineages of dinoflagellates. This result contradicts several published studies, which placed both groups within dinoflagellatesThe work was supported by the EU project PICODIV (EVK3-CT1999-00021), as well as a project funded by the "Centre de Ressources Biologiques" and the GIS "Génomique Marine" from FrancePeer reviewedInter Research201020102006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65015867 bytesapplication/pdfhttp://hdl.handle.net/10261/27410reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3354/ame042277info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/274102026-05-22T06:33:51Z
dc.title.none.fl_str_mv Genetic diversity and habitats of two enigmatic marine alveolate lineages
title Genetic diversity and habitats of two enigmatic marine alveolate lineages
spellingShingle Genetic diversity and habitats of two enigmatic marine alveolate lineages
Groisillier, Agnès
Alveolates
rRNA environmental sequences
Group I and Group II
Dinoflagellates
Syndiniales
Biogeography
rRNA
title_short Genetic diversity and habitats of two enigmatic marine alveolate lineages
title_full Genetic diversity and habitats of two enigmatic marine alveolate lineages
title_fullStr Genetic diversity and habitats of two enigmatic marine alveolate lineages
title_full_unstemmed Genetic diversity and habitats of two enigmatic marine alveolate lineages
title_sort Genetic diversity and habitats of two enigmatic marine alveolate lineages
dc.creator.none.fl_str_mv Groisillier, Agnès
Massana, Ramon
Valentin, Klaus
Vaulot, Daniel
Guillou, Laure
author Groisillier, Agnès
author_facet Groisillier, Agnès
Massana, Ramon
Valentin, Klaus
Vaulot, Daniel
Guillou, Laure
author_role author
author2 Massana, Ramon
Valentin, Klaus
Vaulot, Daniel
Guillou, Laure
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alveolates
rRNA environmental sequences
Group I and Group II
Dinoflagellates
Syndiniales
Biogeography
rRNA
topic Alveolates
rRNA environmental sequences
Group I and Group II
Dinoflagellates
Syndiniales
Biogeography
rRNA
description 15 pages, 4 figures, 1 table
publishDate 2006
dc.date.none.fl_str_mv 2006
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/27410
url http://hdl.handle.net/10261/27410
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3354/ame042277
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 5867 bytes
application/pdf
dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
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score 15.811543

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