DOI: 10.1111/gcb.14065
Scopus记录号: 2-s2.0-85048237388
论文题名: Adaptive evolution in the coccolithophore Gephyrocapsa oceanica following 1,000 generations of selection under elevated CO2
作者: Tong S. ; Gao K. ; Hutchins D.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 7 起始页码: 3055
结束页码: 3064
语种: 英语
英文关键词: calcification
; coccolithophore
; evolution
; Gephyrocapsa oceanica
; ocean acidification
; plasticity
Scopus关键词: adaptation
; carbon cycle
; evolutionary biology
; ocean acidification
; phytoplankton
; plasticity
; Emiliania huxleyi
; Gephyrocapsa oceanica
; Haptophyceae
英文摘要: Coccolithophores are important oceanic primary producers not only in terms of photosynthesis but also because they produce calcite plates called coccoliths. Ongoing ocean acidification associated with changing seawater carbonate chemistry may impair calcification and other metabolic functions in coccolithophores. While short-term ocean acidification effects on calcification and other properties have been examined in a variety of coccolithophore species, long-term adaptive responses have scarcely been documented, other than for the single species Emiliania huxleyi. Here, we investigated the effects of ocean acidification on another ecologically important coccolithophore species, Gephyrocapsa oceanica, following 1,000 generations of growth under elevated CO2 conditions (1,000 μatm). High CO2-selected populations exhibited reduced growth rates and enhanced particulate organic carbon (POC) and nitrogen (PON) production, relative to populations selected under ambient CO2 (400 μatm). Particulate inorganic carbon (PIC) and PIC/POC ratios decreased progressively throughout the selection period in high CO2-selected cell lines. All of these trait changes persisted when high CO2-grown populations were moved back to ambient CO2 conditions for about 10 generations. The results suggest that the calcification of some coccolithophores may be more heavily impaired by ocean acidification than previously predicted based on short-term studies, with potentially large implications for the ocean's carbon cycle under accelerating anthropogenic influences. © 2018 The Authors. Global Change Biology Published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110352
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States
Recommended Citation:
Tong S.,Gao K.,Hutchins D.A.. Adaptive evolution in the coccolithophore Gephyrocapsa oceanica following 1,000 generations of selection under elevated CO2[J]. Global Change Biology,2018-01-01,24(7)