| Item type |
琉球大学リポジトリ登録用アイテムタイプ(1) |
| 公開日 |
2024-01-30 |
| タイトル |
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|
タイトル |
Abundant production of dimethylsulfoniopropionate as a cryoprotectant by freshwater phytoplanktonic dinoflagellates in ice-covered Lake Baikal |
|
言語 |
en |
| 作成者 |
Toda, Kei
Obolkin, Vladimir
Ohira, Shin-Ichi
Saeki, Kentaro
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| アクセス権 |
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|
アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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言語 |
en |
|
権利情報 |
© The Author(s) 2023 |
| 権利情報 |
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|
言語 |
en |
|
権利情報Resource |
https://creativecommons.org/licenses/by/4.0/ |
|
権利情報 |
This article is licensed under a Creative Commons Attribution 4.0 International License |
| 内容記述 |
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|
内容記述タイプ |
Abstract |
|
内容記述 |
Phytoplanktonic dinoflagellates form colonies between vertical ice crystals during the icemelting season in Lake Baikal, but how the plankton survive the freezing conditions is not known. Here we show that the phytoplankton produces large amounts of dimethylsulfoniopropionate (DMSP), which is best-known as a marine compound. Lake-water DMSP concentrations in the spring season are comparable with those in the oceans, and colony water in ice exhibits extremely high concentrations. DMSP concentration of surface water correlates with plankton density and reaches a maximum in mid-April, with temperature-dependent fluctuations. DMSP is released from plankton cells into water in warm days. DMSP is a characteristic osmolyte of marine algae; our results demonstrate that freshwater plankton, Gymnodinium baicalense, has DMSP-producing ability, and efficiently uses the limited sulfur resource (only 1/500 of sea sulfate) to survive in freshwater ice. Plankton in Lake Baikal do not need an osmolyte, and our results clearly indicate that DMSP plays a cryoprotective role. DMSP, although a characteristic marine compound, could also be an important zwitterion for algae of other boreal lakes, alpine snow, and glaciers. |
|
言語 |
en |
| 出版者 |
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出版者 |
Springer Nature |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 識別子 |
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|
識別子 |
https://doi.org/10.1038/s42003-023-05573-9 |
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識別子タイプ |
DOI |
| 収録物識別子 |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
2399-3642 |
| 収録物名 |
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収録物名 |
communications biology |
|
言語 |
en |
| 書誌情報 |
号 6,
p. 1-10,
発行日 2023-11-24
|
T_No6p0.pdf (2 MB)
