气候变化领域集成服务门户(CCPortal): Gene expression changes in the coccolithophore Emiliania huxleyi after 500 generations of selection to ocean acidification

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.832536
	Gene expression changes in the coccolithophore Emiliania huxleyi after 500 generations of selection to ocean acidification
	Lohbeck; Kai T; Riebesell; Ulf; Reusch; Thorsten B H
发布日期	2014-05-16
数据集类型	dataset
英文关键词	Bottles or small containers/Aquaria ( 20 L) ; Chromista ; Emiliania huxleyi ; Gene expression (incl. proteomics) ; Haptophyta ; Laboratory experiment ; Laboratory strains ; Not applicable ; Pelagos ; Phytoplankton ; Single species
英文简介	Coccolithophores are unicellular marine algae that produce biogenic calcite scales and substantially contribute to marine primary production and carbon export to the deep ocean. Ongoing ocean acidification particularly impairs calcifying organisms, mostly resulting in decreased growth and calcification. Recent studies revealed that the immediate physiological response in the coccolithophore Emiliania huxleyi to ocean acidification may be partially compensated by evolutionary adaptation, yet the underlying molecular mechanisms are currently unknown. Here, we report on the expression levels of 10 candidate genes putatively relevant to pH regulation, carbon transport, calcification and photosynthesis in E. huxleyi populations short-term exposed to ocean acidification conditions after acclimation (physiological response) and after 500 generations of high CO2 adaptation (adaptive response). The physiological response revealed downregulation of candidate genes, well reflecting the concomitant decrease of growth and calcification. In the adaptive response, putative pH regulation and carbon transport genes were up-regulated, matching partial restoration of growth and calcification in high CO2-adapted populations. Adaptation to ocean acidification in E. huxleyi likely involved improved cellular pH regulation, presumably indirectly affecting calcification. Adaptive evolution may thus have the potential to partially restore cellular pH regulatory capacity and thereby mitigate adverse effects of ocean acidification.
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/217495
推荐引用方式 GB/T 7714	Lohbeck,Kai T,Riebesell,et al. Gene expression changes in the coccolithophore Emiliania huxleyi after 500 generations of selection to ocean acidification.2014-05-16.https://doi.org/10.1594/PANGAEA.832536.