气候变化领域集成服务门户(CCPortal): Trace Metal Substitution in Marine Phytoplankton

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DOI	10.1146/annurev-earth-053018-060108
	Trace Metal Substitution in Marine Phytoplankton
	Morel F.M.M.; Lam P.J.; Saito M.A.
发表日期	2020
ISSN	0084-6597
起始页码	491
结束页码	517
卷号	48
英文摘要	The sinking of organic matter to the deep ocean leaves extremely low concentrations of major and trace nutrients for photosynthetic organisms at the sunlit surface. As a result, marine phytoplankton make use of alternative sources of essential elements and have evolved to substitute some elements by others in various biochemical processes. A particularly intriguing example is that of Zn, which is used in many biochemical functions but is often depleted down to picomolar concentrations in surface seawater. Laboratory data show that many phytoplankton species are able to achieve high growth rates by replacing Zn with Cd or Co in cultures. One documented biochemical replacement occurs in some carbonic anhydrases that are used in the acquisition of inorganic carbon for photosynthesis. Field data show the existence of such enzymes in surface seawater and indicate a replacement of Zn by Cd and Co in the surface waters of the eastern tropical South Pacific. Those results point at interesting opportunities for future research. squf The dearth of essential elements in surface seawater has caused marine phytoplankton to substitute some trace metals by others in various biochemical processes. Many species can substitute Cd and/or Co for Zn as a metal center in carbonic anhydrase enzymes that are used in the acquisition of inorganic carbon for photosynthesis. Field data show the presence of such enzymes in the sea and indicate a replacement of Zn by Cd and Co in the surface upwelling waters of the eastern tropical South Pacific. New analytical and molecular tools provide opportunities to elucidate the unusual biochemistry of marine phytoplankton. © Copyright 2020 by Annual Reviews. All rights reserved.
关键词	Carbon Carbonic anhydrase Marine biology Photosynthesis Phytoplankton Seawater Tropics Alternative source Biochemical functions Biochemical process Essential elements Low concentrations Marine phytoplankton Photosynthetic organisms Phytoplankton species Trace elements biochemistry concentration (composition)deep sea marine ecosystem organic matter phytoplankton trace metal Pacific Ocean Pacific Ocean (South)
语种	英语
来源机构	Annual Review of Earth and Planetary Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131913
推荐引用方式 GB/T 7714	Morel F.M.M.,Lam P.J.,Saito M.A.. Trace Metal Substitution in Marine Phytoplankton[J]. Annual Review of Earth and Planetary Sciences,2020,48.
APA	Morel F.M.M.,Lam P.J.,&Saito M.A..(2020).Trace Metal Substitution in Marine Phytoplankton.,48.
MLA	Morel F.M.M.,et al."Trace Metal Substitution in Marine Phytoplankton".48(2020).