ABR: Experiments in Deep-Sea Microbiology
ABR:深海微生物学实验
基本信息
- 批准号:9017268
- 负责人:
- 金额:$ 26.18万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1991
- 资助国家:美国
- 起止时间:1991-02-01 至 1993-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This study will address the question: What are the physiological characteristics of those microorganisms that are responsible for the mineralization processes in the deep sea? And more specifically: Are the temperature and pressure adaptations of deep-sea bacteria invariable with nutrition? Strains from a stock of known barophilic (pressure tolerant) organisms, as well as freshly-obtained deep sea isolates, will be used. Growth experiments will be carried out: 1. as continuous culture experiments at atmospheric pressure, and at in situ substrate concentrations and a temperature range of 2-20 oC; and 2. as batch cultures at in situ pressures, and temperatures again of 2- 20 oC and nutrient substrates at the experimentally lowest possible concentrations attainable. Under experimental conditions, changes in population density (cell counts and biomass) and/or radioactive substrate turnover will be used as a sensitive indicator of growth rate response to changes of the various controllable environmental factors: temperature, pressure and substrate concentration. This study potentially will provide new insights into factors regulating microbial growth and the rates of microbial transformations of matter in deep sea environments.
这项研究将解决这样一个问题:在深海中负责矿化过程的微生物的生理特征是什么?更具体地说:深海细菌对温度和压力的适应是否随营养而不变?将使用已知的嗜水(耐压)生物的菌株,以及新鲜获得的深海分离株。将进行生长试验:1。作为常压、原位底物浓度和2-20℃温度范围下的连续培养实验;和2。在原位压力和2- 20℃的温度下分批培养,并在实验中尽可能低的浓度下培养营养基质。在实验条件下,种群密度(细胞计数和生物量)和/或放射性底物周转率的变化将被用作生长速度对各种可控环境因素(温度、压力和底物浓度)变化响应的敏感指标。这项研究可能会为深海环境中调节微生物生长的因素和微生物转化物质的速度提供新的见解。
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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Holger Jannasch其他文献
Holger Jannasch的其他文献
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{{ truncateString('Holger Jannasch', 18)}}的其他基金
Microbial Transformations at Deep-Sea Hydrothermal Vents
深海热液喷口的微生物转化
- 批准号:
9200458 - 财政年份:1992
- 资助金额:
$ 26.18万 - 项目类别:
Continuing Grant
ROA: Microbial Transformations at Deep-Sea Hydrothermal Vents
ROA:深海热液喷口的微生物转化
- 批准号:
8922854 - 财政年份:1990
- 资助金额:
$ 26.18万 - 项目类别:
Continuing Grant
Microbial Transformations at Deep Sea Hydrothermal Vents
深海热液喷口的微生物转化
- 批准号:
8700581 - 财政年份:1987
- 资助金额:
$ 26.18万 - 项目类别:
Continuing Grant
Marine Microbial Sulfur Transformations
海洋微生物硫转化
- 批准号:
8608124 - 财政年份:1987
- 资助金额:
$ 26.18万 - 项目类别:
Continuing Grant
Metabolic Versatility of the Sulfur Utilizing Bacterium, Beggiatoa
硫利用细菌 Beggiatoa 的代谢多样性
- 批准号:
8314358 - 财政年份:1984
- 资助金额:
$ 26.18万 - 项目类别:
Standard Grant
Microbial Transformations in the Deep Sea
深海微生物的转化
- 批准号:
8416206 - 财政年份:1984
- 资助金额:
$ 26.18万 - 项目类别:
Continuing Grant
Microbiological Studies at Deep Sea Hydrothermal Vents
深海热液喷口的微生物研究
- 批准号:
8308631 - 财政年份:1984
- 资助金额:
$ 26.18万 - 项目类别:
Continuing Grant
Microbial Transformations in the Deep Sea
深海微生物的转化
- 批准号:
8214896 - 财政年份:1982
- 资助金额:
$ 26.18万 - 项目类别:
Continuing Grant
Microbial Transformations in the Deep Sea
深海微生物的转化
- 批准号:
8117560 - 财政年份:1982
- 资助金额:
$ 26.18万 - 项目类别:
Standard Grant
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