Collaborative Research: Eurythermal Adaptations to an Extreme Environment by the Symbionts of the Hydrothermal Vent Polychaete, Alvinella Pompejana

合作研究：热液喷口多毛类共生体 Alvinella Pompejana 对极端环境的热适应

• 批准号: 9907666
• 负责人: Stephen Cary
• 金额: $ 29.27万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9907666&HistoricalAwards=false
• 关键词: Collaborative; Research; Eurythermal; Adaptations; Extreme

Symbiotic associations between bacteria and eukaryotic hosts are a prominent feature in marine systems. Whether the bacteria reside external to the host or endosymbiotically, the role of the association often remains poorly understood. This lack of understanding, in part, stems from our inability to cultivate the majority of these symbionts free from their host. Even in instances where cultivation is possible, it is unlikely that the physiological capacities of bacteria measured in the laboratory truly represnt those in the natural ecosysem. Molecular genetic approaches have the capability to resolve the metabolic potential of these bacteria and thereby infer their function in the association. The proposed research seeks to understand the metabolic potential of the primary members of a diverse epibiotic bacterial community found associated with the tube-dwelling polychaete, Alvinella pompejana. This association exists in a deep-sea hydrothermal vent biotope characterized by high concentrations of heavy metals and the steepest thermal gradient experienced by an organism yet described.

细菌与真核宿主之间的共生关联是海洋系统中的重要特征。 细菌是宿主外部还是内共生的外部，该关联的作用往往仍然很少了解。 这种缺乏理解的部分原因是我们无法从他们的宿主中培养这些共生体中的大多数。 即使在可能培养的情况下，在实验室中测得的细菌的生理能力也不太可能真正代表自然生态物中的细菌。 分子遗传学方法具有解决这些细菌的代谢潜力，从而推断出它们在缔合中的功能的能力。 拟议的研究旨在了解与居住在管式多chaete Alvinella pompejana相关的各种表现细菌群落的主要成员的代谢潜力。 该关联存在于深海热液排气生物体中，其特征是高浓度的重金属和尚未描述的生物所经历的最陡峭的热梯度。