Mechanisms and evolution of plant water management

植物水分管理的机制和演变

• 批准号: DP140100666
• 负责人: Prof Timothy Brodribb
• 金额: $ 24.33万
• 依托单位: University of Tasmania
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140100666
• 关键词: Mechanisms; evolution; plant; water; management

This project proposes a new approach to understand the evolution and physiology of stomatal function, and how this interacts with xylem evolution to determine whole-plant water management. Using a combination of membrane-level, and whole-leaf physiological techniques, this project will focus on mechanisms of stomatal closure in diverse plant species. Specific stomatal and xylem responses to water stress will be mapped together onto the gymnosperm clade to reveal co-evolutionary linkages between xylem and stomatal physiology. By combining physiological data with evolutionary patterns among major land plant lineages this project will produce a mechanistic framework for interpreting the drought ecology of all plant species.

该项目提出了一种新的方法来理解气孔功能的进化和生理，以及它如何与木质部进化相互作用，以确定整个植物的水分管理。利用膜水平和全叶生理技术的组合，该项目将集中在不同植物物种的气孔关闭机制。特定的气孔和木质部对水分胁迫的反应将一起映射到裸子植物分支上，以揭示木质部和气孔生理之间的共同进化联系。通过将生理数据与主要陆地植物谱系的进化模式相结合，该项目将产生一个解释所有植物物种干旱生态的机制框架。