Widespread occurrence and genetic diversity of marine parasitoids belonging to Syndiniales ( Alveolata )

Autor: Aurélie Chambouvet, Laure Guillou, Alexandra Z. Worden, Amy R. Kirkham, Ramon Massana, Rory M. Welsh, Dave J. Scanlan, Manon Viprey
Přispěvatelé: Adaptation et diversité en milieu marin (AD2M), Station biologique de Roscoff [Roscoff] (SBR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] (ICM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Institut des Neurosciences de Montpellier - Déficits sensoriels et moteurs (INM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)
Jazyk: angličtina
Rok vydání: 2008
Předmět:
0106 biological sciences
[SDV.BID]Life Sciences [q-bio]/Biodiversity
DNA
Ribosomal
01 natural sciences
Microbiology
Alveolate
[SDV.MP.PRO]Life Sciences [q-bio]/Microbiology and Parasitology/Protistology
18S ribosomal RNA
03 medical and health sciences
Monophyly
Phylogenetics
Mediterranean Sea
RNA
Ribosomal
18S
Animals
Cluster Analysis
Seawater
[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology
14. Life underwater
Clade
Atlantic Ocean
Phylogeny
Ecology
Evolution
Behavior and Systematics
ComputingMilieux_MISCELLANEOUS
030304 developmental biology
0303 health sciences
biology
Ecology
010604 marine biology & hydrobiology
Eukaryota
Genes
rRNA
Biodiversity
Sequence Analysis
DNA
DNA
Protozoan
biology.organism_classification
[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology
Evolutionary biology
Taxonomy (biology)
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Syndiniales
Dinophyceae
Zdroj: Environmental Microbiology
Environmental Microbiology, 2008, 10 (12), pp.3349-3365. ⟨10.1111/j.1462-2920.2008.01731.x⟩
Environmental Microbiology, Society for Applied Microbiology and Wiley-Blackwell, 2008, 10 (12), pp.3349-3365. ⟨10.1111/j.1462-2920.2008.01731.x⟩
ISSN: 1462-2912
1462-2920
DOI: 10.1111/j.1462-2920.2008.01731.x⟩
Popis: Summary Syndiniales are a parasitic order within the eukaryotic lineage Dinophyceae (Alveolata). Here, we analysed the taxonomy of this group using 43655 18S rRNA gene sequences obtained either from environmental data sets or cultures, including 6874 environmental sequences from this study derived from Atlantic and Mediterranean waters. A total of 5571 out of the 43655 sequences analysed fell within the Dinophyceae. Both bayesian and maximum likelihood phylogenies placed Syndiniales in five main groups (I‐V), as a monophyletic lineage at the base of ‘core’ dinoflagellates (all Dinophyceae except Syndiniales), although the latter placement was not bootstrap supported. Thus, the two uncultured novel marine alveolate groups I and II, which have been highlighted previously, are confirmed to belong to the Syndiniales. These groups were the most diverse and highly represented in environmental studies. Within each, 8 and 44 clades were identified respectively. Co-evolutionary trends between parasitic Syndiniales and their putative hosts were not clear, suggesting they may be relatively ‘general’ parasitoids. Based on the overall distribution patterns of the Syndinialesaffiliated sequences, we propose that Syndiniales are exclusively marine. Interestingly, sequences belonging to groups II, III and V were largely retrieved from the photic zone, while Group I dominated samples from anoxic and suboxic ecosystems. Nevertheless, both groups I and II contained specific clades preferentially, or exclusively, retrieved from these latter ecosystems. Given the broad distribution of Syndiniales, our work indicates that parasitism may be a major force in ocean food webs, a force that is neglected in current conceptualizations of the marine carbon cycle.
Databáze: OpenAIRE
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