摘要
为系统了解UV-B辐射对植物水分代谢的影响,本文从生理、生化两个角度概述了近30年国内外相关方面的研究成果,内容涉及UV-B辐射对植物根系活力、蒸腾速率、水分利用效率及植物不同发育期叶片脯氨酸、可溶性糖含量的影响;总结了UV-B辐射对植物气孔行为的影响及相关机理,包括植物体内ABA、H2O2、NO等信号分子含量的变化以及这些信号分子在调节气孔行为方面发挥的作用。认为UV-B辐射对植物水分代谢产生伤害,且此伤害作用与植物种类、发育阶段有关,与UV-B辐照时间及剂量正相关。研究UV-B辐射对植物水分代谢的影响,对自然及农业生产环境下规避UV-B辐射对植物产生逆境胁迫效应具有积极的环境生态学价值。
In order to understand the effect of UV-B radiation on systematic water metabolism in plants, this review outlined domestic and international achievements in the last 30 years relating to the physiology and biochemistry of plants under UV-B radiation, such as root activity, transpiration rate, water use efficiency, and changes in leaf proline and soluble sugar content at different plant developmental stages. The effect of UV-B radiation on stomatal behavior and related mechanisms including a variety of signal molecule （ABA, hydrogen peroxide, nitric oxide, etc.） content and the role of signal molecules in stomatal activity were also reviewed. We conclude that UV-B radiation damage to plant water metabolism （that is associated with species, developmental stage） is proportional to the UV-B radiation dose and treatment time. Studies on UV-B radiation in water metabolism are vital for preventing UV-B radiation stress in plants under natural and agricultural production environment.
出处
《中国生态农业学报》
CAS
CSCD
北大核心
2009年第4期829-833,共5页
Chinese Journal of Eco-Agriculture
基金
国家发改委稀土专项基金(IFZ20051210)资助
关键词
UV—B辐射
蒸腾速率
水分利用效率
组织含水量
气孔导度
UV-B radiation, Transpiration rate, Water use efficiency, Tissue water content, Stomatal conductance
