PRF/M: Plant Senescence and Ecosystem Function

整个植物和植物器官的衰老 在生理学上有相当好的理解。 PI将开始 九个月的计划远离家庭机构与三个- 一个月的实习在一个领先的中心生理和 生态研究（华盛顿卡内基研究所和 斯坦福大学生物科学系）， 学习衰老生理学，测量氮运动 在衰老的植物内外， 两种实验诱导叶片的结果 衰老对植物生产力的影响 短期生产力 测量将使PI暴露于当前技术， 测量光、光合作用和呼吸作用。 下一篇：PI 将在哥斯达黎加的一个野外工作站呆上六个月， Pi将使用在以下方面获得的知识和技术： 卡内基进行实地实验。 目标生物体 将是万年青多年生植物，这是一组至关重要的植物， 可持续农业系统的设计， 了解热带森林的动态。 如果成功，这 研究将使科学家能够加速或推迟植物生长 通过控制光和灵魂养分来衰老。

Senescence of whole plants and of plant organs os moderately well understood physiologically. The PI will begin a nine-month program away from the home institution with a three- month internship at a leading center for physiological and ecological research (Carnegie Institute of Washington and Stanford University"s Department of Biological Sciences), learning senescence physiology, measuring nitrogen movement within and out of senescing plants, and investigating the consequences of two kinds of experimentally induced leaf senescence on plant productivity. The short-term productivity measurements will expose the PI to current techniques for measuring light, photosynthesis, and respiration. Next, the PI will spend six months at a field station in Costa Rica, where the Pi will use the knowledge and techniques acquired at Carnegie to conduct field experiments. The target organisms will be evergreen perennial, a group of plants that is crucial to the design of sustainable agricultural systems and to the understanding of tropical forest dynamics. If successful, this research will enable scientists to accelerate or delay plant senescence by manipulating light and soul nutrients.