Collaborative Research: Chemical and Biological Characterizations of Phosphonate and Polyphosphate Dynamics in Marine Phytoplankton

合作研究：海洋浮游植物中磷酸盐和聚磷酸盐动力学的化学和生物学特征

• 批准号: 1060884
• 负责人: Ellery Ingall
• 金额: $ 21.65万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-05-01 至 2015-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1060884&HistoricalAwards=false
• 关键词: Collaborative; Research; Chemical; Biological; Characterizations; Collaborative; Research; Chemical; Biological; Characterizations

Phosphorus (P) is a recognized essential nutrient for marine primary production and its inorganic chemistry has been well studied. However, the dissolved organic phosphorus pool (DOP) has been little studied even given its importance as a phosphorus source to microorganisms. This project will identify biogenic sources of P compounds to DOP using controlled culture studies focused on phosphonate and polyphosphate. These compound classes exert important controls over P cycling, carbon fixation and community structure and export from the upper ocean, and long-term sequestration. The study will employ innovative methods, including molecular tools and novel chemical analyses, to examine specific phosphonate and polyphosphate compound production by key phytoplankton taxa under different environmental conditions. Four hypotheses are driving the proposed research and focus the study on the primary research questions. The study will improve our understanding of the production of specific P compounds, and provide insight into the bioavailability of DOP and the influence of P on biological production.The project will train three graduate students and there is a substantial outreach component associated with the study. The PIs will integrate education and outreach to K-12 communities using Whyville, an online virtual world geared specifically to 8-14 year old children. During this study, the investigators will expand the use of Whyville as a science learning tool through interactions with at-risk children as part of ScienceQuest, an after school program at a housing shelter, and through intensive summer short courses to school teachers.

磷（P）是公认的海洋初级生产的必需营养素，其无机化学已经得到了很好的研究。然而，鉴于其作为微生物的磷来源的重要性，溶解的有机磷池（DOP）也很少进行研究。该项目将使用专注于磷酸盐和多磷酸盐的受控培养研究来鉴定P化合物的生物源来DOP。这些化合物类别对P循环，碳固定和社区结构以及从上海出口以及长期隔离的重要控制。该研究将采用创新的方法，包括分子工具和新型化学分析，以在不同的环境条件下通过关键的浮游植物分类群来检查特定的磷酸和多磷酸化合物的生产。四个假设正在推动拟议的研究，并将研究重点放在主要研究问题上。该研究将提高我们对特定P化合物的生产的理解，并洞悉DOP的生物利用度以及P对生物生产的影响。该项目将培训三名研究生，并且与研究有关。 PI将使用专门针对8-14岁儿童的在线虚拟世界Whyville将教育和宣传与K-12社区融合。在这项研究中，调查人员将通过与高危儿童的互动作为科学界的一部分，在住房收容所的课后课程，以及向学校老师的夏季简短课程扩展Whyville作为科学学习工具的使用。