On the physiology of plant transpiration

植物蒸腾作用的生理学

• 批准号: DP210103186
• 负责人: Prof Graham Farquhar
• 金额: $ 33.83万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2021
• 资助国家: 澳大利亚
• 起止时间: 2021-03-18 至 2024-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP210103186
• 关键词: physiology; plant; transpiration

This project aims to better understand plant transpiration. It is significant from both a basic and a practical perspective. It intends to solve a conundrum of the biophysics of the evaporative sites within leaves. That is, in dry air, the relative humidity of intercellular air spaces suggests much lower liquid water potentials than those typically measured. At a practical level, the failure to sustain transpiration in dry conditions leads to desiccation and tissue death, and plants differ in this vulnerability. The aim is to apply a novel nanoparticle technique to measure the water potential distribution within the leaf, identify hydraulic resilience attributes, and develop a modern theory of optimal transpiration under varying conditions.

本项目旨在更好地了解植物蒸腾作用。从基本和实际的角度来看，这都是有意义的。它旨在解决叶片内蒸发部位的生物物理学难题。也就是说，在干燥的空气中，细胞间空气空间的相对湿度表明比通常测量的低得多的液态水电位。在实践层面上，在干燥条件下不能维持蒸腾作用会导致干燥和组织死亡，而植物在这种脆弱性方面各不相同。其目的是应用一种新的纳米粒子技术来测量叶片内的水势分布，识别水力弹性属性，并在不同条件下开发最佳蒸腾作用的现代理论。