Faster growth of the major prokaryotic versus eukaryotic CO2 fixers in the oligotrophic ocean.
Faster growth of the major prokaryotic versus eukaryotic CO2 fixers in the oligotrophic ocean.
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DOI:
10.1038/ncomms4776
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发表时间:
2014-04-29
影响因子:
16.6
通讯作者:
Zubkov, Mikhail V.
中科院分区:
文献类型:
--
作者:
Zubkov, Mikhail V.
Because maintenance of non-scalable cellular components—membranes and chromosomes—requires an increasing fraction of energy as cell size decreases, miniaturization comes at a considerable energetic cost for a phytoplanktonic cell. Consequently, if eukaryotes can use their superior energetic resources to acquire nutrients with more or even similar efficiency compared with prokaryotes, larger unicellular eukaryotes should be able to achieve higher growth rates than smaller cyanobacteria. Here, to test this hypothesis, we directly compare the intrinsic growth rates of phototrophic prokaryotes and eukaryotes from the equatorial to temperate South Atlantic using an original flow cytometric 14CO2-tracer approach. At the ocean basin scale, cyanobacteria double their biomass twice as frequently as the picoeukaryotes indicating that the prokaryotes are faster growing CO2 fixers, better adapted to phototrophic living in the oligotrophic open ocean—the most extensive biome on Earth. After the energetically superior eukaryotes had evolved, prokaryotes appeared to lose control over biological CO2 fixation in all major biomes on Earth. Here the author shows that in the oligotrophic ocean, the most extensive biome on Earth, the prokaryotes fix CO2 twice as fast as eukaryotes.
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影响因子:
5.1
作者:
Frias-Lopez J;Thompson A;Waldbauer J;Chisholm SW
通讯作者:
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DOI:
10.1073/pnas.162216899
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2002-08-06
影响因子:
11.1
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DOI:
10.1073/pnas.2130696100
发表时间:
2003-10-28
影响因子:
11.1
作者:
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通讯作者:
Kamjunke, N