International: Isolation and Characterization of Iron-Reducing and Iron-Oxidizing Bacteria from a Biofilm Community

国际：从生物膜群落中分离和表征铁还原和铁氧化细菌

• 批准号: 0206355
• 负责人: Dianne Newman
• 金额: $ 1.54万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206355&HistoricalAwards=false
• 关键词: International; Isolation; Characterization; Iron; Reducing

This award supports a new collaboration between Dr. Dianne K. Newman of the California Institute of Technology and Dr. Paula S. Suarez of the Universidad Simon Bolivar in Venezuela. These researchers share a long-standing interest in metal transformations by microorganisms and have both in recent years studied iron cycling in biofilm communities. Currently, very little is known about the diversity, genetics, and biochemistry of phototrophic iron-oxidizers, and even less is know about how these organisms interact with other bacteria in biofilms.These researchers will collaborate to isolate iron-oxidizers and iron-reducers from a biofilm forming on the surface of a corroding steel boat in San Esteban National Park, Venezuela. It is anticipated that this project will provide insights that will help launch a long-term collaboration to study the biochemistry and genetics of phototrophic iron-oxidation, and test the hypothesis that iron-oxidizing phototrophs can form biofilms that are sustained by iron-cycling in concert with iron-reducers.

该奖项支持加州理工学院的黛安·k·纽曼博士和委内瑞拉西蒙·玻利瓦尔大学的葆拉·s·苏亚雷斯博士的一项新合作。这些研究人员对微生物的金属转化有着长期的兴趣，近年来他们都研究了生物膜群落中的铁循环。目前，人们对光养性铁氧化剂的多样性、遗传学和生物化学知之甚少，而对这些生物如何与生物膜中的其他细菌相互作用则知之甚少。这些研究人员将合作从委内瑞拉圣埃斯特班国家公园一艘锈蚀的钢船表面形成的生物膜中分离出铁氧化剂和铁还原剂。预计该项目将有助于开展长期合作，研究光养铁氧化的生物化学和遗传学，并验证铁氧化光养生物可以形成生物膜的假设，这种生物膜可以通过铁还原剂的铁循环来维持。