globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12153
Scopus记录号: 2-s2.0-84955641892
论文题名:
Ordinary stoichiometry of extraordinary microorganisms
作者: Neveu M.; Poret-Peterson A.T.; Anbar A.D.; Elser J.J.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2016
卷: 14, 期:1
起始页码: 33
结束页码: 53
语种: 英语
Scopus关键词: cells and cell components ; chemotrophy ; Earth ; extremophile ; microorganism ; nutrient limitation ; photoautotrophy ; physicochemical property ; stoichiometry ; trace element ; United States ; Yellowstone National Park ; element ; archaeon ; bacterium ; chemistry ; DNA sequence ; genetics ; isolation and purification ; microbiology ; molecular genetics ; pH ; recreational park ; temperature ; thermal spring ; United States ; Archaea ; Bacteria ; Elements ; Hot Springs ; Hydrogen-Ion Concentration ; Molecular Sequence Data ; Parks, Recreational ; Sequence Analysis, DNA ; Temperature ; United States
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: All life on Earth seems to be made of the same chemical elements in relatively conserved proportions (stoichiometry). Whether this stoichiometry is conserved in settings that differ radically in physicochemical conditions (extreme environments) from those commonly encountered elsewhere on the planet provides insight into possible stoichiometries for putative life beyond Earth. Here, we report measurements of elemental stoichiometry for extremophile microbes from hot springs of Yellowstone National Park (YNP). Phototrophic and chemotrophic microbes were collected in locations spanning large ranges of temperature (24 °C to boiling), pH (1.6-9.6), redox (0.1-7.2 mg L-1 dissolved oxygen), and nutrient concentrations (0.01-0.25 mg L-1 NO2- , 0.7-12.9 mg L-1 NO3- , 0.01-42 mg L-1 NH4 +, 0.003-1.1 mg L-1 P mostly as phosphate). Despite these extreme conditions, the microbial cells sampled had a major and trace element stoichiometry within the ranges commonly encountered for microbes living in the more moderate environments of lakes and surface oceans. The cells did have somewhat high C:P and N:P ratios that are consistent with phosphorus (P) limitation. Furthermore, chemotrophs and phototrophs had similar compositions with the exception of Mo content, which was enriched in cells derived from chemotrophic sites. Thus, despite the extraordinary physicochemical and biological diversity of YNP environments, life in these settings, in a stoichiometric sense, remains much the same as we know it elsewhere. Copyright © 2016 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85117
Appears in Collections:影响、适应和脆弱性

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作者单位: School of Earth and Space Exploration, Arizona State University, Tempe, AZ, United States; Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, United States; School of Life Sciences, Arizona State University, Tempe, AZ, United States

Recommended Citation:
Neveu M.,Poret-Peterson A.T.,Anbar A.D.,et al. Ordinary stoichiometry of extraordinary microorganisms[J]. Geobiology,2016-01-01,14(1)
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