Environmental Controls of Thaumarchaeota Populations in Southeastern Coastal Waters

东南沿海水域奇古菌种群的环境控制

• 批准号: 1335838
• 负责人: James Hollibaugh
• 金额: $ 72.76万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1335838&HistoricalAwards=false
• 关键词: Environmental; Controls; Thaumarchaeota; Populations; Southeastern

Mid-summer blooms of Thaumarchaeota, an abundant type of Archaea in meso-pelagic, open ocean environments, are a regular feature of microbial community dynamics in Southeastern U.S. coastal waters. These blooms appear to have significant consequences for the nitrogen geochemical cycle as they result in the temporary uncoupling of ammonia oxidation from nitrite oxidation and denitrification, and may cause enhanced production of the powerful greenhouse gas nitrous oxide. In order to further understanding of these blooms, researchers from the University of Georgia will conduct a sampling program coupled with experimental manipulations and analyses of gene transcription to identify the factors controlling the dynamics of the bloom. Results from this study will enhance efforts to model nitrogen cycling through the coastal zone.Broader Impacts: This study will provide scientific training to undergraduate, graduate, and post-doctoral students on microbial geochemistry. The researchers will also engage local K-12 teachers in collaboration with the GCE-LTER to integrate scientific research into their classrooms.

Thaumarchaeota的仲夏盛开，是一种多种类型的开放海洋环境中的古细菌，是美国东南部沿海水域微生物社区动态的常规特征。这些花朵似乎对氮地球化学循环产生了重大影响，因为它们导致氨氧化与亚硝酸盐氧化和硝化的暂时解偶，并且可能导致强大的温室气氧化二氮的产生增强。为了进一步了解这些花朵，佐治亚大学的研究人员将进行抽样计划，并进行实验操作和基因转录分析，以确定控制盛开动力学的因素。这项研究的结果将加强为通过沿海地区的氮循环建模的努力。Broader的影响：这项研究将为本科，研究生和博士后学生提供微生物地球化学的科学培训。研究人员还将与当地的K-12教师与GCE-ter合作，将科学研究纳入其课堂。