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A Large Silicon Pool in Small Picophytoplankton

文献类型： 外文期刊

作者： Wei, Yuqiu 1 ; Sun, Jun 3 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr & Rural Affairs, Qingdao, Peoples R China

2.Lab Marine Fisheries Sci & Food Prod Proc, Pilot Natl Lab Marine Sci & Technol, Qingdao, Peoples R China

3.Tianjin Univ Sci & Technol, Res Ctr Indian Ocean Ecosyst, Tianjin, Peoples R China

4.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan, Peoples R China

关键词： biogeochemical cycles; silicon cycle; carbon cycle; Si accumulation; picophytoplankton

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：6.064； 五年影响因子：6.843 ）

ISSN：

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Marine picophytoplankton (<2 mu m) play a key role in supporting food web and energy flow in the ocean, and are major contributors to the global marine carbon (C) cycle. In recent years, picophytoplankton have been found to have significant silica (Si) accumulation, a finding which provides a new sight into the interaction of marine C and Si cycles and questions the overwhelming role of large diatoms (>2 mu m) in the Si cycle. As picophytoplankton have high cell abundance and wide distribution in the open ocean, exploring their influences on the C and Si cycles as well as other element cycles are becoming new scientific hotspots. However, there are still few studies on the physiology and ecology of picophytoplankton, especially their potential roles in the biogeochemical Si cycle at present. Thus, it is necessary to accurately evaluate and quantify the contributions of picophytoplankton to the C and Si cycles, and to further understand their C and Si sinking mechanisms. In this review, we expect to have a novel understanding of picophytoplankton Si pool and regulation mechanism by conducting targeted studies on these scientific issues. This also provides a premise foundation and theoretical framework for further study of the role of small cells in the global ocean Si cycle and the coupling of C and Si cycles.

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