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DOI	10.1126/science.aal2981
	The complex effects of ocean acidification on the prominent N2-fixing cyanobacterium Trichodesmium
	Hong H.; Shen R.; Zhang F.; Wen Z.; Chang S.; Lin W.; Kranz S.A.; Luo Y.-W.; Kao S.-J.; Morel F.M.M.; Shi D.
发表日期	2017
ISSN	0036-8075
起始页码	527
结束页码	531
卷号	356 期号:6337
英文摘要	Acidification of seawater caused by anthropogenic carbon dioxide (CO2) is anticipated to influence the growth of dinitrogen (N2)-fixing phytoplankton, which contribute a large fraction of primary production in the tropical and subtropical ocean. We found that growth and N2-fixation of the ubiquitous cyanobacterium Trichodesmium decreased under acidified conditions, notwithstanding a beneficial effect of high CO2. Acidification resulted in low cytosolic pH and reduced N2-fixation rates despite elevated nitrogenase concentrations. Low cytosolic pH required increased proton pumping across the thylakoid membrane and elevated adenosine triphosphate production. These requirements were not satisfied under field or experimental iron-limiting conditions, which greatly amplified the negative effect of acidification. © 2017, American Association for the Advancement of Science. All rights reserved.
英文关键词	adenosine triphosphate; carbon dioxide; sea water; trace metal; iron; nitrogen; nitrogenase; proton pump; sea water; carbon dioxide; concentration (composition); cyanobacterium; enzyme activity; nitrogen fixation; ocean acidification; phytoplankton; seawater; subtropical region; acidification; Article; bacterial growth; cell membrane; down regulation; electron transport; heavy metal poisoning; homeostasis; nonhuman; partial pressure; pH; photosystem II; phytoplankton; priority journal; sea; thylakoid; thylakoid membrane; Trichodesmium; upregulation; chemistry; deficiency; growth, development and aging; metabolism; microbiology; nitrogen fixation; sea; Trichodesmium; Trichodesmium; Carbon Dioxide; Hydrogen-Ion Concentration; Iron; Nitrogen; Nitrogen Fixation; Nitrogenase; Oceans and Seas; Proton Pumps; Seawater; Trichodesmium
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244052
作者单位	State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, Fujian, China; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, United States; Department of Geosciences, Princeton University, Princeton, NJ 08544, United States
推荐引用方式 GB/T 7714	Hong H.,Shen R.,Zhang F.,et al. The complex effects of ocean acidification on the prominent N2-fixing cyanobacterium Trichodesmium[J],2017,356(6337).
APA	Hong H..,Shen R..,Zhang F..,Wen Z..,Chang S..,...&Shi D..(2017).The complex effects of ocean acidification on the prominent N2-fixing cyanobacterium Trichodesmium.Science,356(6337).
MLA	Hong H.,et al."The complex effects of ocean acidification on the prominent N2-fixing cyanobacterium Trichodesmium".Science 356.6337(2017).