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A globally distributed Syndiniales parasite dominates the Southern Ocean micro-eukaryote community near the sea-ice edge

Citation

Clarke, LJ and Bestley, S and Bissett, A and Deagle, BE, A globally distributed Syndiniales parasite dominates the Southern Ocean micro-eukaryote community near the sea-ice edge, ISME Journal, 13, (3) pp. 734-737. ISSN 1751-7362 (2018) [Refereed Article]

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Copyright Statement

Copyright 2018 International Society for Microbial Ecology

Official URL: https://www.nature.com/articles/s41396-018-0306-7

DOI: doi:10.1038/s41396-018-0306-7

Abstract

Syndiniales (Dinophyceae, Alveolata) are a diverse parasitic group common in all marine environments, but their ecological role remains poorly understood. Here we show an unprecedented dominance of a single Syndiniales group I operational taxonomic unit (OTU) across 3000 km of Southern Ocean transects near the sea-ice edge. This super-abundant OTU consistently represented >20%, and in some locations >50%, of eukaryote 18S rDNA sequences. Identical 18S V4 sequences have been isolated from seven Northern Hemisphere locations, and the OTU’s putative V9 rDNA sequence was detected at every station of the global Tara Oceans voyage. Although Syndiniales taxa display some host specificity, our identification of candidate Southern Ocean hosts suggests this OTU associates with distinct phyla in different parts of the world. Our results indicate Syndiniales are key players in surface waters near the vast and dynamic sea-ice edge in the world’s most biologically productive ocean.

Item Details

Item Type:Refereed Article
Keywords:protists, plankton, community composition, sea ice, spatial analysis, generalised dissimilarity modelling, metabarcoding
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Microbial Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Antarctic and Sub-Antarctic Flora, Fauna and Biodiversity
UTAS Author:Clarke, LJ (Dr Laurence Clarke)
UTAS Author:Bestley, S (Dr Sophie Bestley)
ID Code:130404
Year Published:2018
Web of Science® Times Cited:22
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2019-01-23
Last Modified:2019-03-20
Downloads:11 View Download Statistics

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