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Newly discovered deep-branching marine plastid lineages are numerically rare but globally distributed

DRS at CSIR-National Institute of Oceanography

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Title Newly discovered deep-branching marine plastid lineages are numerically rare but globally distributed
 
Creator Choi, C.J.
Bachy, C.
Jaeger, G.S.
Poirier, C.
Sudek, L.
Sarma, V.V.S.S.
Mahadevan, A.
Giovannoni, S.J.
Worden, A.Z.
 
Subject Aquatic communities
Aquatic ecology, productivity
 
Description Ocean surface warming is resulting in an expansion of stratified, low-nutrient environments, a process referred to as ocean desertification [1]. A challenge for assessing the impact of these changes is the lack of robust baseline information on the biological communities that carry out marine photosynthesis. Phytoplankton perform half of global biological CO2 uptake, fuel marine food chains, and include diverse eukaryotic algae that have photosynthetic organelles (plastids) acquired through multiple evolutionary events 1, 2 and 3. While amassing data from ocean ecosystems for the Baselines Initiative (6,177 near full-length 16S rRNA gene sequences and 9.4 million high-quality 16S V1-V2 amplicons) we identified two deep-branching plastid lineages based on 16S rRNA gene data. The two lineages have global distributions, but do not correspond to known phytoplankton. How the newly discovered phytoplankton lineages contribute to food chains and vertical carbon export to the deep sea remains unknown, but their prevalence in expanding, low nutrient surface waters suggests they will have a role in future oceans
 
Date 2017-03-01T09:40:03Z
2017-03-01T09:40:03Z
2017
 
Type Journal Article
 
Identifier Current Biology (1); 2017; R15-R16.
http://drs.nio.org/drs/handle/2264/5086
 
Language en
 
Rights This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
 
Publisher Current Biology