globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-013-9906-5
Scopus记录号: 2-s2.0-84891902368
论文题名:
Extracellular enzymes in terrestrial, freshwater, and marine environments: Perspectives on system variability and common research needs
作者: Arnosti C.; Bell C.; Moorhead D.L.; Sinsabaugh R.L.; Steen A.D.; Stromberger M.; Wallenstein M.; Weintraub M.N.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 117, 期:1
起始页码: 5
结束页码: 21
语种: 英语
英文关键词: Aquatic ; Extracellular enzymes ; Marine ; Microbial communities ; Soil ; Terrestrial
Scopus关键词: biogeochemistry ; enzyme activity ; freshwater environment ; marine environment ; microbial community ; pH ; reaction kinetics ; research work ; terrestrial environment
英文摘要: Extracellular enzymes produced by heterotrophic microbial communities are major drivers of carbon and nutrient cycling in terrestrial, freshwater, and marine environments. Although carbon and nutrient cycles are coupled on global scales, studies of extracellular enzymes associated with terrestrial, freshwater, and marine microbial communities are not often compared across ecosystems. In part, this disconnect arises because the environmental parameters that control enzyme activities in terrestrial and freshwater systems, such as temperature, pH, and moisture content, have little explanatory power for patterns of enzyme activities in marine systems. Instead, factors such as the functional diversity of microbial communities may explain varying patterns of enzyme activities observed in the ocean to date. In any case, many studies across systems focus on similar issues that highlight the commonalities of microbial community organization. Examples include the effective lifetime of enzymes released into the environment; the extent to which microbial communities coordinate enzyme expression to decompose complex organic substrates; and the influence of microbial community composition on enzyme activities and kinetics. Here we review the often-disparate research foci in terrestrial, freshwater, and marine environments. We consider the extent to which environmental factors may regulate extracellular enzyme activities within each ecosystem, and highlight commonalities and current methodological challenges to identify research questions that may aid in integrating cross-system perspectives in the future. © 2013 Springer Science+Business Media Dordrecht.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83634
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Department of Marine Sciences, University of North Carolina-Chapel Hill, 3117A Venable Hall CB #3300, Chapel Hill, NC, 27599-3300, United States; Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, United States; Department of Environmental Sciences, University of Toledo, Toledo, OH, United States; University of New Mexico, Albuquerque, NM, United States; Department of Microbiology, University of Tennessee, Knoxville, TN, United States; Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, United States; Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States

Recommended Citation:
Arnosti C.,Bell C.,Moorhead D.L.,et al. Extracellular enzymes in terrestrial, freshwater, and marine environments: Perspectives on system variability and common research needs[J]. Biogeochemistry,2014-01-01,117(1)
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