Microbial Observatories: Collaborative Research: Characterization of Novel Anaerobic Microorganisms from a Sulfide Spring

微生物观测站：合作研究：硫化物泉中新型厌氧微生物的表征

• 批准号: 0240683
• 负责人: Lee Krumholz
• 金额: --
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-05-01 至 2008-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0240683&HistoricalAwards=false
• 关键词: Microbial; Observatories; Collaborative; Research; Characterization

Grants have been awarded to Drs. Lee Krumholz, Cecelia Brown, Thomas Dewers, Mostafa Elshahed and Bruce Roe at the University of Oklahoma and Drs. Stefan Sievert and Kai-Uwe Hinrichs at the Woods Hole Oceanographic Institution (Massachusetts) to establish a Microbial Observatory for the characterization of novel anaerobic microorganisms from Zodletone spring, an oxygen-depleted sulfide spring in Southwestern Oklahoma. This spring is a unique environment that provides a habitat for a range of unusual and interesting microorganisms, most of which have not yet been cultured. The overall goal of the proposed study is to determine the different kinds of microorganisms that inhabit the spring, study how these different microorganisms interact together and obtain cultured cells for more detailed studies. These scientists will focus on understanding the physiological function and ecological roles that these microorganisms fulfill in their natural environment. To achieve these goals, they will first identify members of the spring microbial community via sequencing of specific genes that are typically used to determine evolutionary relationships among microorganisms, or to indicate a specific metabolic function. Secondly, they will focus on novel groups of microorganisms encountered at the site. Large fragments of the genome of these microorganisms will be sequenced and genes identified to determine the nutritional and ecological characteristics of microorganisms from the spring. The architecture of the microbial community will be studied using a combination of molecular methods and microscopy to provide a three dimensional picture of microbial populations. Based on the data obtained from gene sequences, they will attempt to cultivate many of these so far uncultured microorganisms and perform an in-depth analysis of the metabolic capabilities of individuals under controlled growth conditions. Throughout the project, scientists at the University of Oklahoma will engage in educational activities with the public schools in the rural area surrounding the sulfur spring (Kiowa and Caddo Counties) and in Norman, OK. They will provide hands-on activities to develop and promote scientific reasoning and critical thinking skills in high school and middle school students. The project will provide a clear picture of the diversity of life in a very interesting environment. Zodletone spring lies on the land surface, yet because of the chemistry of the water, it is devoid of atmospheric oxygen. This situation is extremely rare in current times yet was common in ancient (Archean) geological ages. Therefore, much of the data produced could be extrapolated to understand microbial life in these ancient times and the impact of microorganisms in shaping the earth's geological history.

赠款已授予俄克拉荷马州大学的Lee Krumholz、Cecelia Brown、托马斯Dewers、Mostafa Elshahed和布鲁斯Roe博士以及伍兹霍尔海洋研究所（马萨诸塞州）的Stefan Sievert和Kai-Uwe Hinrichs博士，以建立微生物观测站，对来自Zodletone泉（俄克拉荷马州西南部的一个贫氧硫化物泉）的新型厌氧微生物进行表征。这个春天是一个独特的环境，为一系列不寻常和有趣的微生物提供了栖息地，其中大部分尚未被培养。 这项研究的总体目标是确定栖息在泉水中的不同种类的微生物，研究这些不同的微生物如何相互作用，并获得培养的细胞进行更详细的研究。 这些科学家将专注于了解这些微生物在自然环境中的生理功能和生态作用。 为了实现这些目标，他们将首先通过对特定基因进行测序来识别春季微生物群落的成员，这些基因通常用于确定微生物之间的进化关系或指示特定的代谢功能。 其次，他们将重点关注在现场遇到的新微生物群。 将对这些微生物基因组的大片段进行测序，并确定基因，以确定春季微生物的营养和生态特征。 微生物群落的结构将使用分子方法和显微镜的组合进行研究，以提供微生物种群的三维图像。 基于从基因序列中获得的数据，他们将尝试培养许多迄今为止未培养的微生物，并在受控的生长条件下对个体的代谢能力进行深入分析。 在整个项目中，俄克拉荷马州大学的科学家将与硫泉周围农村地区（基奥瓦县和卡多县）和俄克拉荷马州诺曼市的公立学校开展教育活动。 他们将提供实践活动，以发展和促进高中和中学生的科学推理和批判性思维能力。 该项目将提供一个非常有趣的环境中的生命多样性的清晰画面。佐德列通泉位于陆地表面，但由于水的化学性质，它缺乏大气中的氧气。 这种情况在现代是非常罕见的，但在古代（太古代）地质时代是常见的。因此，产生的大部分数据可以外推，以了解这些古代的微生物生活以及微生物在塑造地球地质历史方面的影响。