Long and Medium-Term Research: Chloroplast Enslavement in Marine Oligotrich Ciliates

长期和中期研究：海洋寡毛纤毛虫的叶绿体奴役

• 批准号: 9101759
• 负责人: John Dolan
• 金额: $ 4.56万
• 依托单位: Individual Award
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1992-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9101759&HistoricalAwards=false
• 关键词: Long; Medium; Term; Research; Chloroplast

Long & Medium-Term Research: Chloroplast Enslavement in Marine Oligotrich Ciliates This award is under the Program for Long-& Medium Term Research at Foreign Centers of Excellence, which enables U.S. scientists and engineers to conduct three to twelve months of research abroad at research centers of proven excellence. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will support a twelve-month postdoctoral research visit by Dr. John Dolan with Fereidoun Rassoulzadegan, Director of Research at the Station Zoologique, Villefranche- sur-Mer, France. The researchers will focus on the oligotrich ciliates which often dominate marine microzo>plankton communities, about which recent work has shown a large fraction (. 1/3) are mixotrophic; that is, in addition to herbivory they use photosynthate produced by chloroplasts sequestered from ingested algae. The researchers propose to use field work and laboratory work to ask what large-scale environmental properties influence the abundance of these forms and what cellular mechanisms may be involved in chloroplast enslavement. Field work will examine the variability of mixotrophic oligotrichs in relation to changes in the abundance of autotrophic nanoplankton, light, and heterotrophic competitors. Laboratory work will investigate cellular mechanisms. The postulate that a chemical cue, derived from the algae source of chloroplasts, modifies the normal course of food vacuole processing is justified. A set of experiments designed to locate the chemical cue and examine the effect of the state of the source algae as well as the state of the oligotrich is outlined. The study will add significantly to knowledge of how some plankters survive in nutritionally dilute environ- ments and also will further understanding of the cellular mechanisms involved with symbiosis. The award recommendation provides funds to cover international travel and a dependents' allowance.

长期中期研究：植物叶绿体奴役 海洋寡毛纤毛虫 该奖项是根据长期-中期计划 在外国卓越中心的研究，这使得 美国科学家和工程师将进行3至12次 几个月的研究在国外的研究中心， 卓越 该计划的奖项提供了机会， 联合研究，以及使用独特或互补的 国外的设施、专业知识和实验条件。 该奖项将支持为期12个月的博士后研究 John Dolan博士与Fereidoun Rassoulzadegan的访问， 动物学站研究主任，Villefranche 法国滨海。 研究人员将重点关注寡毛型 经常支配海洋微型生物>浮游生物的纤毛虫 最近的研究表明， fraction（. 1/3）是混合营养的;也就是说，除了 它们利用叶绿体产生的光合作用 与摄入的藻类隔离。 研究人员建议， 使用现场工作和实验室工作，问什么大规模的 环境属性影响这些的丰度 形式以及可能涉及的细胞机制 叶绿体奴役 实地工作将检查 混合营养寡毛菌的变异性 自养微型浮游生物，光， 和异养竞争者。 实验室工作将 研究细胞机制。 假设a 化学线索，来自藻类来源的叶绿体， 改变了正常的食物泡加工过程， 正当的 一组旨在定位 化学线索和检查的状态的影响， 源藻类以及寡毛藻的状态是 概述。 这项研究将大大增加对以下方面的了解： 一些寄生虫如何在营养稀薄的环境中生存， 也将进一步了解细胞的 与共生有关的机制。 该奖项的建议提供资金，以支付国际 旅费和家属津贴。