REU: Collaborative Research: Photosynthesis and Stomatal Conductance During Periods of Variable Sunlight

REU：合作研究：阳光变化期间的光合作用和气孔导度

• 批准号: 8919325
• 负责人: Alan Knapp
• 金额: $ 8.09万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-15 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8919325&HistoricalAwards=false
• 关键词: REU; Collaborative; Research; Photosynthesis; Stomatal

The proposed research will examine basic physiological processes controlling plant growth and water used in native plants under conditions of fluctuating sunlight. Most previous studies have been done under constant sunlight but both native and agricultural plants are more commonly exposed to variations in sunlight due to clouds or other plants shading each other. Basic knowledge of how plants respond to fluctuating levels of sunlight in terms of their growth and water use is crucial for our understanding of native plant and crop productivity. The studies will build upon patterns of responses already documented and provide a mechanistic interpretation of them. No-steady state plant responses to humidity, reduced water availability, and temperature will be completed. Such a mechanistic understanding will be useful to basic ecologists as well as use in crops plants. The use of three different ecosystems for study sites (subalpine, desert, tallgrass prairie) will broaden the applicability of the results.

拟议的研究将研究控制植物生长的基本生理过程和在波动的阳光条件下本地植物使用的水。以前的大多数研究都是在持续的阳光下进行的，但由于云层或其他植物相互遮蔽，原生植物和农业植物更常暴露在阳光变化中。植物在生长和水分利用方面如何对波动的阳光水平作出反应的基本知识对于我们了解本地植物和作物的生产力至关重要。这些研究将建立在已有记录的反应模式的基础上，并提供对这些模式的机械解释。非稳态植物对湿度、水分利用率降低和温度的响应将完成。这种机制的理解将有助于基础生态学家以及作物植物的应用。在研究地点使用三种不同的生态系统（亚高山、沙漠、高草草原）将扩大结果的适用性。