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Extracellular polymeric substances in Antarctic environments: A review of their ecological roles and impact on glacier biogeochemical cycles
https://nipr.repo.nii.ac.jp/records/16860
https://nipr.repo.nii.ac.jp/records/168608b4c70f8-2a71-44e6-b1dc-85ba143633a9
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-04-28 | |||||
| タイトル | ||||||
| タイトル | Extracellular polymeric substances in Antarctic environments: A review of their ecological roles and impact on glacier biogeochemical cycles | |||||
| タイトル | ||||||
| タイトル | Extracellular polymeric substances in Antarctic environments: A review of their ecological roles and impact on glacier biogeochemical cycles | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Extracellular Polymeric Substances | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Exopolysaccharides | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Chemical functionalities | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Dissolved organic matter | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Cryoconite | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Nagar, Shipra
× Nagar, Shipra× Antony, Runa× Thamban, Meloth |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Antarctic continent comprises diverse ecosystems like snow, glacier ice, sea ice, melt pools, glacial soils, supraglacial and subglacial lakes that accommodate numerous microbial and algal communities. These biotic groups secrete matrices of biomacromolecules called Extracellular Polymeric Substances (EPSs), which enhance their ability to withstand extreme environmental conditions. EPSs are mainly composed of exopolysaccharides, proteins, lipids and nucleic acids, and exhibit assorted activities due to diverse functionalities of matrix like spatial conformation, molecular weight, rheology, charge, size and affinity. Several protective and ecological functions such as cryoprotection, anti-desiccation, buffering against high salinity and pH, trace metal uptake and binding, sequestration of dissolved organic matter and nutrients, aggregate formation and biofilm production have been attributed to microbial EPSs. They also contribute to production of dissolved and particulate organic matter and hence can influence biogeochemical cycling of elements, especially carbon and iron. Further, they aid in aggregation of dust particles on the glacier surface, substantially reducing the albedo of the ice and thereby accelerate melting of glaciers. This study provides an overview of role of EPSs in Antarctic ecosystems, its ecological significance and chemical functionalities, and discusses the approach for a better understanding of relevance of EPSs in biogeochemistry of Antarctic environments. | |||||
| 書誌情報 |
en : Polar Science 巻 30, p. 100686, 発行日 2021-12 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 18739652 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.polar.2021.100686 | |||||
| 関連名称 | 10.1016/j.polar.2021.100686 | |||||
