Photosynthetic Picoeukaryotes Diversity in the Underlying Ice Waters of the White Sea, Russia

Photosynthetic Picoeukaryotes Diversity in the Underlying Ice Waters of the White Sea, Russia

The White Sea is a unique basin combining features of temperate and arctic seas. The current state of its biocenoses can serve as a reference point in assessing the expected desalination of the ocean as a result of climate change. A metagenomic study of under-ice ice photosynthetic picoeukaryotes (P...

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Bibliographic Details
Published in:Diversity (Basel) Vol. 12; no. 3; p. 93
Main Authors: Belevich, Tatiana A., Ilyash, Ludmila V., Milyutina, Irina A., Logacheva, Maria D., Troitsky, Aleksey V.
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-03-2020
Subjects:
18s rdna
Algae
Annealing
Biocenoses
Biomass
Climate change
Cyanobacteria
Deoxyribonucleic acid
Desalination
DNA
Environmental changes
Environmental conditions
Flow cytometry
high-throughput sequencing
Ice
Laboratories
mantoniella
Metagenomics
micromonas
Microscopy
Next-generation sequencing
Photosynthesis
picoeukaryotes
Plankton
Salinity
Taxonomy
under-ice water
Water temperature
white sea
Canada
White Sea
United States > US
Arctic region
Arctic Ocean
Germany
Russia
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Summary:The White Sea is a unique basin combining features of temperate and arctic seas. The current state of its biocenoses can serve as a reference point in assessing the expected desalination of the ocean as a result of climate change. A metagenomic study of under-ice ice photosynthetic picoeukaryotes (PPEs) was undertaken by Illumina high-throughput sequencing of the 18S rDNA V4 region from probes collected in March 2013 and 2014. The PPE biomass in samples was 0.03–0.17 µg C·L−1 and their abundance varied from 10 cells·mL−1 to 140 cells·mL−1. There were representatives of 16 algae genera from seven classes and three supergroups, but Chlorophyta, especially Mamiellophyceae, dominated. The most represented genera were Micromonas and Mantoniella. For the first time, the predominance of Mantoniella (in four samples) and Bolidophyceae (in one sample) was observed in under-ice water. It can be assumed that a change in environmental conditions will lead to a considerable change in the structure of arctic PPE communities.
ISSN:1424-2818
1424-2818
DOI:10.3390/d12030093