The pico-sized Mamiellophyceae and a novel Bathycoccus clade from the summer plankton of Russian Arctic Seas and adjacent waters
| Autor: | Galina A Abyzova, A. V. Troitsky, Irina A. Milyutina, T. A. Belevich |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
010504 meteorology & atmospheric sciences Oceans and Seas 01 natural sciences Applied Microbiology and Biotechnology Microbiology Ostreococcus tauri Bathycoccus Russia Ostreococcus 03 medical and health sciences Chlorophyta Phytoplankton Seawater Picoplankton 0105 earth and related environmental sciences Micromonas Ecology biology Arctic Regions Plankton biology.organism_classification 030104 developmental biology Oceanography Arctic |
| Zdroj: | FEMS microbiology ecology. 97(2) |
| ISSN: | 1574-6941 |
| Popis: | Global climate changes and anthropogenic activity greatly impact Arctic marine biodiversity including phytoplankton which contribute greatly to atmospheric oxygen production. Thus the study of microalgae has rising topicality. Class Mamiellophyceae is an important component of phototrophic picoplankton. To gain more knowledge about Mamiellophyceae distribution and diversity special studies were performed in such remote areas as the Russian Arctic seas. A metabarcoding of pico-sized Mamiellophyceae was undertaken by high-throughput sequencing of the 18S rRNA gene sequence V4 region from samples collected in July–September 2017 in the Barents, Kara and Laptev seas, and in the adjacent waters of the Norwegian Sea. Our study is the first to show that Mamiellophyceae among the summer picoplankton of Russian Arctic seas are diverse and represented by 16 algae species/phylotypes. We discovered a new candidate species of Bathycoccus assigned to a new Bathycoccus clade A—uncultured Bathycoccus Kara 2017. It was found that several Micromonas species can co-exist, with Micromonas polaris dominating north of 72°N. The presence of Ostreococcus tauri, Ostreococcus lucimarinus and Ostreococcus mediterraneus at high latitudes beyond 65°N was documented for the first time, similar to findings for some other taxa. Our results will be important for obtaining a global view of Mamiellophyceae community dynamics. |
| Databáze: | OpenAIRE |
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