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CAREER: Octocoral-Algal Symbioses -- the Future of Caribbean Coral Reefs?

职业：八珊瑚-藻类共生——加勒比珊瑚礁的未来？

基本信息

批准号：
0747205
负责人：
Tamar Goulet
金额：
$ 55.87万
依托单位：
University of Mississippi
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2008
资助国家：
美国
起止时间：
2008-04-15 至 2016-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0747205&HistoricalAwards=false
关键词：
CAREER Octocoral Algal Symbioses Future

项目摘要

In symbiosis a minimum of two organisms co-exist, linked in one entity. Symbioses greatly influence carbon, nitrogen, and phosphorus cycling on earth and affect the outcome of competition and succession in ecosystems. In a coral reef, the symbioses between hard corals, soft corals (octocorals), sea anemones and zooxanthellae (algae) create an ecosystem, supporting tremendous diversity. Coral research predominantly focuses on hard corals, while research on octocorals lags behind. With climate change and the decline in hard corals, octocorals may provide a critical role in maintaining diversity of organisms on coral reefs. This research will focus on the symbiosis between Caribbean octocorals and zooxanthellae (Symbiodinium sp.) and will determine how changing environmental parameters may affect octocoral-zooxanthella symbioses. The genetic identity of the zooxanthellae and the physiology of octocoral species and their zooxanthellae will be determined. In addition, the effects of changing environmental parameters such as seawater temperatures, exposure to ultraviolet radiation, and increased ocean acidification on the physiology of octocoral-zooxanthella symbioses will be determined. These data are crucial to understanding and predicting the survival of octocorals and of Caribbean coral reefs. Symbiosis in the classroom will be taught using student created interviews of people in their community and responses will be gathered using personal response systems ("clickers"). This approach, termed 'you and symbiosis,' will be taught at the undergraduate level then modified for K-12. Examples of topics include: the legume Kudzu; humans and their gut flora; and West Nile virus. A laboratory course will provide students experience with molecular and physiological techniques applied to research of symbioses. By merging research and innovative teaching techniques to show students and the public the applicability of symbioses to their lives, individuals may develop greater personal interest in coral reef ecosystems.

在共生关系中，至少有两个生物体共存，连接在一个实体中。共生体对地球碳、氮、磷循环有着重要的影响，并影响着生态系统竞争和演替的结果。在珊瑚礁中，硬珊瑚、软珊瑚（珊瑚）、海葵和虫黄藻（藻类）之间的共生关系创造了一个生态系统，支持着巨大的多样性。珊瑚研究主要集中在硬珊瑚，而对珊瑚的研究则滞后。随着气候变化和硬珊瑚的减少，珊瑚礁可能在维持珊瑚礁生物多样性方面发挥关键作用。这项研究将集中在加勒比海珊瑚和虫黄藻（共生藻属）之间的共生关系。并将确定环境参数的变化如何影响珊瑚虫和虫黄藻的共生关系。将确定虫黄藻的遗传特性和珊瑚物种及其虫黄藻的生理学。此外，还将确定海水温度、紫外线照射和海洋酸化加剧等环境参数变化对珊瑚虫-虫黄藻共生体生理的影响。这些数据对于了解和预测珊瑚和加勒比珊瑚礁的生存至关重要。在课堂上的共生将使用学生创建的人在他们的社区和响应将使用个人响应系统（“点击器”）收集采访教授。这种方法，被称为“你和共生”，将在本科阶段教授，然后修改为K-12。主题的例子包括：豆科植物葛根;人类和他们的肠道植物群;和西尼罗河病毒。实验室课程将为学生提供应用于共生体研究的分子和生理技术的经验。通过合并研究和创新的教学技术，向学生和公众展示共生体对他们生活的适用性，个人可能会对珊瑚礁生态系统产生更大的个人兴趣。