OCE-PRF Track 1: Dissecting the physiological and molecular responses of marine picoeukaryotes to the interactive effects of P deficiency and ocean acidification

OCE-PRF 轨道 1：剖析海洋超核生物对缺磷和海洋酸化相互作用的生理和分子反应

• 批准号: 1421082
• 负责人: LeAnn Whitney
• 金额: $ 17.4万
• 依托单位: Whitney LeAnn P
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-03-01 至 2017-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1421082&HistoricalAwards=false
• 关键词: OCE; PRF; Track; Dissecting; physiological

Picoeukaryotes are an ecologically important, but understudied group of picophytoplankton that are significant contributors to oceanic primary production and global carbon cycling. In this postdoctoral research project, the fellow will examine the physiological and molecular response of three picoeukaryotes to elevated carbon dioxide and changes in nutrient availability. This is an important and timely topic for improved understanding of marine ecosystem responses to global climate changes. This two year fellowship hosted by Michael Lomas, Bigelow Laboratory for Ocean Sciences, will advance the career of the fellow who has strong background in microbial research, a field that is of increasing importance in oceanography. The broadening participation activities include education and outreach to youths from a local Somalian community residing in Maine since the Somalian civil war.In this project, the fellow will study the response of Micromonas pusilla, Ostreococcus tauri, and Bathycoccus prasinos, picoeukaryotes commonly found in oligotrophic regions, to conditions representative of future oceans, specifically ocean acidification and phosphorus limitation. Physiological measurements and whole-cell transcriptomic profiling will be used to characterize the cellular response of this ecologically important group of picophytoplankton to changes in phosphorus availability and rising ambient carbon dioxide. In addition, cell abundance and gene expression patterns will be investigated in field samples using species-specific molecular assays to understand how natural picoeukaryotic populations respond to regional gradients in environmental conditions. The study will provide insight into how climate change may impact picoeukaryote growth and thus carbon cycling in oligotrophic gyres. Data and information about rate processes and underlying cellular mechanisms are critical for future development of ecologically-driven, predictive ocean ecosystem models.

picoeukaryotes是一个重要但研究研究的皮皮植物群，是海洋初级生产和全球碳循环的重要贡献者。在这个博士后研究项目中，该研究员将研究三种picoeukaryotes对升高二氧化碳和养分可用性变化的生理和分子反应。这是一个重要且及时的主题，用于改善对海洋生态系统对全球气候变化的反应的理解。 Bigelow海洋科学实验室迈克尔·洛马斯（Michael Lomas）主持的这两年的奖学金将促进具有微生物研究背景强大的研究员的职业，这一领域在海洋学中越来越重要。 The broadening participation activities include education and outreach to youths from a local Somalian community residing in Maine since the Somalian civil war.In this project, the fellow will study the response of Micromonas pusilla, Ostreococcus tauri, and Bathycoccus prasinos, picoeukaryotes commonly found in oligotrophic regions, to conditions representative of future oceans, specifically ocean acidification and phosphorus limitation.生理测量和全细胞转录组分析将用于表征这一至关重要的皮皮植物对磷的可用性变化和环境二氧化碳的增加的细胞反应。此外，将使用物种特异性的分子测定法中研究细胞丰度和基因表达模式，以了解天然的picoekaryotic群体如何在环境条件下对区域梯度做出反应。这项研究将提供有关气候变化如何影响Picoeukaryote生长的洞察力，从而在贫营养Gyres中产生碳循环。有关速率过程和潜在细胞机制的数据和信息对于生态驱动的预测海洋生态系统模型的未来发展至关重要。