Viral - Bacterial Interactions in the Marine Environment: Significance of Lysogeny

海洋环境中的病毒-细菌相互作用：溶源的意义

• 批准号: 9502775
• 负责人: John Paul
• 金额: $ 30万
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-06-01 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9502775&HistoricalAwards=false
• 关键词: Viral; Bacterial; Interactions; Marine; Environment

9502775 Paul The overall objective of this research project is to understand the significance of lysogeny in the marine environment. Toward that end, the proposal addresses three questions: How prevalent is lysogeny in the marine environment? What environmental factors control or influence the lysogenic decision? and Why does lysogeny impart a competitive (or does it impart) over nonlysogens? These studies will be performed with populations and isolates collected along a trophic gradient from estuarine to oligotrophic surface waters of the southeastern Gulf of Mexico and the South Atlantic Bight and from surface waters to deep aphotic environments. The research will address environmental factors that have been shown to influence the "lysogenic decision" (nutrient status, pressure, temperature, mutagenic radiation and xenobiotics) on natural populations and lysogenic isolates. Finally the research will examine if the presence of a prophage in a bacterium results in a competitive advantage as determined by growth rates and expression of prophage encoded genes. Overall this study will provide insight into many of these processes and expand the knowledge of the interactions of viruses with the rest of the water column microbial community. ***

9502775 保罗 该研究项目的总体目标是了解溶原性在海洋环境中的意义。 为此，该提案解决了三个问题：溶原性在海洋环境中有多普遍？ 什么样的环境因素控制或影响溶原性决定？为什么溶原性赋予了对非溶原性的竞争性（或它赋予了）？ 这些研究将与人口和隔离收集沿着营养梯度从河口贫营养表面沃茨的墨西哥湾东南部和南大西洋湾和从表面沃茨深无光环境。 该研究将解决已被证明影响自然种群和溶原性分离物的“溶原性决定”（营养状况、压力、温度、诱变辐射和外源性物质）的环境因素。 最后，研究将检查细菌中原噬菌体的存在是否会导致竞争优势，这取决于生长速率和原噬菌体编码基因的表达。 总的来说，这项研究将深入了解这些过程中的许多过程，并扩大病毒与水柱微生物群落的其他部分相互作用的知识。 ***