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A global perspective on marine photosynthetic picoeukaryote community structure
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Kirkham, Amy R., Lepère, Cécile, Jardillier, Ludwig, Not, Fabrice, Bouman, Heather, Mead, A. (Andrew) and Scanlan, David J. (2013) A global perspective on marine photosynthetic picoeukaryote community structure. The ISME Journal, Volume 7 (Number 5). pp. 922-936. doi:10.1038/ismej.2012.166 ISSN 1751-7362.
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Official URL: http://dx.doi.org/10.1038/ismej.2012.166
Abstract
A central goal in ecology is to understand the factors affecting the temporal dynamics and spatial distribution of microorganisms and the underlying processes causing differences in community structure and composition. However, little is known in this respect for photosynthetic picoeukaryotes (PPEs), algae that are now recognised as major players in marine CO2 fixation. Here, we analysed dot blot hybridisation and cloning–sequencing data, using the plastid-encoded 16S rRNA gene, from seven research cruises that encompassed all four ocean biomes. We provide insights into global abundance, α- and β-diversity distribution and the environmental factors shaping PPE community structure and composition. At the class level, the most commonly encountered PPEs were Prymnesiophyceae and Chrysophyceae. These taxa displayed complementary distribution patterns, with peak abundances of Prymnesiophyceae and Chrysophyceae in waters of high (25:1) or low (12:1) nitrogen:phosphorus (N:P) ratio, respectively. Significant differences in phylogenetic composition of PPEs were demonstrated for higher taxonomic levels between ocean basins, using Unifrac analyses of clone library sequence data. Differences in composition were generally greater between basins (interbasins) than within a basin (intrabasin). These differences were primarily linked to taxonomic variation in the composition of Prymnesiophyceae and Prasinophyceae whereas Chrysophyceae were phylogenetically similar in all libraries. These data provide better knowledge of PPE community structure across the world ocean and are crucial in assessing their evolution and contribution to CO2 fixation, especially in the context of global climate change.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QH Natural history > QH301 Biology | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
| Library of Congress Subject Headings (LCSH): | Marine algae -- Ecology, Marine phytoplankton, Prymnesiophyceae, Chrysophyceae, Molecular microbiology | ||||
| Journal or Publication Title: | The ISME Journal | ||||
| Publisher: | Nature Publishing Group | ||||
| ISSN: | 1751-7362 | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Volume: | Volume 7 | ||||
| Number: | Number 5 | ||||
| Page Range: | pp. 922-936 | ||||
| DOI: | 10.1038/ismej.2012.166 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Date of first compliant deposit: | 24 December 2015 | ||||
| Date of first compliant Open Access: | 24 December 2015 | ||||
| Funder: | Natural Environment Research Council (Great Britain) (NERC) | ||||
| Grant number: | NE/C003160/1 |
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