Collaborative Research: Organic Compounds in Hydrothermal Systems: A Framework for Investigating Heterotrophy at High Temperature
合作研究:水热系统中的有机化合物:研究高温异养的框架
基本信息
- 批准号:0221417
- 负责人:
- 金额:$ 17.48万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2002
- 资助国家:美国
- 起止时间:2002-09-01 至 2006-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
ABSTRACTOCE-0221417OCE-0221113This study sets out to make chemical measurements of inorganic and organic carbon compounds found in a complex and poorly understood environment, shallow water marine hydrothermal systems. Due in part to limited sampling opportunities, our understanding of marine hydrothermal microbial systems and especially of their organic geochemistry is lacking. The metabolic energy requirements of microbial lifeforms in these environments is also unclear. Determination of the chemical structures and concentrations of a series of aqueous low molecular weight organic compounds (amino acids, carbohydrates and organic acids) will allow the modeling of the energetic bounds associated with the metabolism of these substrates by heterotrophic thermophiles. A series of studies, including using direct SCUBA field sampling of the study site (Aeolian Islands, Sicily), will allow hydrothermal vent fluid collection including temporal variation. Thermophilic bacteria are known to be metabolically opportunistic, having the capability of utilizing a variety of carbon sources present in their environment along with one or more electron acceptors. How these organisms perform such metabolic manipulations and how they dynamically adapt to changes in their chemical and physical environment is not yet known. These investigators will employ a thermodynamic modeling approach, using known concentrations of specific substrates at known temperatures, to calculate the possible bioenergetic energy yields of the respiratory and fermentative reactions these organisms use in hydrothermal environments. This in turn will increase our understanding of the biogeochemical processes that may fuel the microbial energetics in the deeper subsurface biosphere.
摘要:本研究旨在对一个复杂且鲜为人知的环境——浅水海洋热液系统中发现的无机和有机碳化合物进行化学测量。由于采样机会有限,我们对海洋热液微生物系统,特别是它们的有机地球化学的了解还很缺乏。在这些环境中,微生物生命形式的代谢能量需求也不清楚。测定一系列水相低分子量有机化合物(氨基酸、碳水化合物和有机酸)的化学结构和浓度,可以建立与异养嗜热微生物代谢这些底物相关的能量界模型。一系列研究,包括在研究地点(西西里岛的伊奥利亚群岛)使用直接水肺实地取样,将允许热液喷口流体收集,包括时间变化。已知嗜热细菌具有代谢机会性,具有利用其环境中存在的各种碳源以及一个或多个电子受体的能力。这些生物如何进行这种代谢操作,以及它们如何动态地适应化学和物理环境的变化,目前尚不清楚。这些研究人员将采用热力学建模方法,在已知温度下使用已知浓度的特定底物,计算这些生物在热液环境中使用的呼吸和发酵反应的可能生物能产量。反过来,这将增加我们对生物地球化学过程的理解,这些过程可能会为深层地下生物圈中的微生物能量提供燃料。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Jan Amend其他文献
Jan Amend的其他文献
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{{ truncateString('Jan Amend', 18)}}的其他基金
REU Site: Community College Cultivation Cohort (C4)
REU站点:社区大学培养队列(C4)
- 批准号:
1460892 - 财政年份:2015
- 资助金额:
$ 17.48万 - 项目类别:
Continuing Grant
Collaborative Research: Development of Numerical Models Linking Fluid Geochemistry and Biological Communities in Mid-Ocean Ridge Hydrothermal Environments
合作研究:建立连接大洋中脊热液环境中流体地球化学和生物群落的数值模型
- 批准号:
1207874 - 财政年份:2011
- 资助金额:
$ 17.48万 - 项目类别:
Standard Grant
Collaborative Research: Microbial Ecology of Ocean Basement Aquifers: ODP Borehole Observatories
合作研究:海洋基底含水层微生物生态学:ODP 钻孔观测站
- 批准号:
1207880 - 财政年份:2011
- 资助金额:
$ 17.48万 - 项目类别:
Continuing Grant
CAREER:Geochemical Energy for Thermophilic Archaea and Bacteria
职业:嗜热古细菌和细菌的地球化学能源
- 批准号:
1222533 - 财政年份:2011
- 资助金额:
$ 17.48万 - 项目类别:
Continuing Grant
Center for Dark Energy Biosphere Investigations (C-DEBI)
暗能量生物圈调查中心(C-DEBI)
- 批准号:
0939564 - 财政年份:2010
- 资助金额:
$ 17.48万 - 项目类别:
Cooperative Agreement
Collaborative Research: Development of Numerical Models Linking Fluid Geochemistry and Biological Communities in Mid-Ocean Ridge Hydrothermal Environments
合作研究:建立连接大洋中脊热液环境中流体地球化学和生物群落的数值模型
- 批准号:
0937337 - 财政年份:2009
- 资助金额:
$ 17.48万 - 项目类别:
Standard Grant
Collaborative Research: Microbial Ecology of Ocean Basement Aquifers: ODP Borehole Observatories
合作研究:海洋基底含水层微生物生态学:ODP 钻孔观测站
- 批准号:
0604203 - 财政年份:2007
- 资助金额:
$ 17.48万 - 项目类别:
Continuing Grant
Collaborative Research: Ecophysiology of Deeply-Branching Bacterial and Archaeal Communities
合作研究:深分支细菌和古菌群落的生态生理学
- 批准号:
0525500 - 财政年份:2005
- 资助金额:
$ 17.48万 - 项目类别:
Standard Grant
CAREER:Geochemical Energy for Thermophilic Archaea and Bacteria
职业:嗜热古细菌和细菌的地球化学能源
- 批准号:
0447231 - 财政年份:2005
- 资助金额:
$ 17.48万 - 项目类别:
Continuing Grant
LEXEN: Growth Media for Hyperthermophiles: Geochemical Constraints on Realistic Carbon and Energy Sources in Shallow Marine Hydrothermal Systems
LEXEN:超嗜热菌生长介质:浅海热液系统中实际碳和能源的地球化学约束
- 批准号:
9714288 - 财政年份:1997
- 资助金额:
$ 17.48万 - 项目类别:
Standard Grant
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