Features of metabolic regulation revealed by transcriptomic adaptions driven by long-term elevated pCO(2) in Chaetoceros muelleri
文献类型： 外文期刊
作者： Liang, Chengwei 1 ; Zhang, Yufei 1 ; Wang, Lu 1 ; Shi, Lei 1 ; Xu, Dong 3 ; Zhang, Xiaowen 3 ; Ye, Naihao 3 ;
作者机构： 1.Qingdao Univ Sci & Technol, Qingdao, Peoples R China
2.Shandong Prov Key Lab Biochem Engn, Qingdao, Peoples R China
3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao, Peoples R China
4.Natl Oceanog Ctr, Qingdao, Peoples R China
关键词： Chaetoceros muelleri; elevated CO2; long term; transcriptomic
期刊名称：PHYCOLOGICAL RESEARCH （ 影响因子：1.675； 五年影响因子：1.87 ）
ISSN： 1322-0829
年卷期：
页码：
收录情况： SCI
摘要： Ocean acidification caused by the rise of anthropogenic emissions of carbon dioxide (CO2) is expected to influence many marine species, especially phytoplankton. Diatoms, a key group of phytoplankton, play vital roles in global carbon fixation and natural food webs. Currently, little is known about their adaptive responses to long-term acidification. In this study, physiological and transcriptomic approaches were combined to explore the mechanisms by which Chaetoceros muelleri can endure long-term acidification. Physiological changes were significantly affected by long-term elevated partial pressure of CO2 (pCO(2)) levels. Drastic changes in lipid content and composition were observed under both short- and long-term high-pCO(2) stresses. Changes in the transcriptome revealed that a wide range of cellular and metabolic processes were differentially affected. A global upregulation of genes involved in the Calvin cycle, glycolysis, fatty acid synthesis and nitrogen metabolism occurred under long-term acidification. Thus, C. muelleri may have evolved new features to adapt to the elevated pCO(2) level. Calvin cycle and nitrogen metabolic mechanisms may play roles in new molecular strategies to survive increasingly acidified waters in the future.
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