Viruses and viral-mediated processes in the sea

海洋中的病毒和病毒介导的过程

• 批准号: 419838-2012
• 负责人: Suttle, Curtis
• 金额: $ 4.97万
• 依托单位: Fisheries and Oceans Canada
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Ship Time
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=515810
• 关键词: Viruses; viral; mediated; processes; sea

It has become increasingly clear that viruses are major drivers of global biogeochemical cycles and represent the greatest genetic diversity on Earth. The proposed research directly examines the spatial variability and genetic diversity of viruses, their effect on the mortality of phytoplankton and bacteria, and the consequent role of viral lysis on biogeochemical processes in the ocean. We will continue to explore the abundance and diversity of viruses that infect zooplankton, a critical link in aquatic foodwebs. As well, investigations of viral transcription in phytoplankton will reveal which viruses are replicating (i.e. Who are they?) and who the susceptible hosts are (i.e. Who is getting infected?). These investigations will enhance our understanding of viral distribution and diversity, virus-host interactions, and viral mediated nutrient regeneration. This knowledge can result in the synthesis of more accurate models of the role of viruses within marine ecosystems, which in turn can affect marine management issues such as estimation of fisheries productivity, remediation of harmful algal blooms, and assessment of aquatic ecosystem health.

越来越清楚的是，病毒是全球生物地球化学循环的主要驱动力，代表着地球上最大的遗传多样性。拟议的研究直接考察了病毒的空间变异性和遗传多样性、它们对浮游植物和细菌死亡率的影响，以及病毒裂解对海洋生物地球化学过程的后续作用。我们将继续探索感染浮游动物的病毒的丰度和多样性，浮游动物是水生食物网的关键环节。同样，对浮游植物中病毒转录的研究将揭示哪些病毒正在复制（即它们是谁？）以及易感宿主是谁（即谁会被感染？）。这些调查将提高我们对病毒分布和多样性，病毒-宿主相互作用和病毒介导的营养再生的理解。这方面的知识可以导致综合更准确的模型，病毒在海洋生态系统中的作用，这反过来又可以影响海洋管理问题，如渔业生产力的估计，有害藻华的补救，以及水生生态系统健康的评估。