【摘要】 光合作用的光抑制是一种发生在所有植物上的生理胁迫,不仅在强光下发生,在低温、干旱、水淹、盐胁迫、高CO2浓度等环境胁迫下,也会发生。近年来无论是对其本质的认识,还是对其机理的研究都已取得很大进展。本研究概述了光系统I(PSI)、光系统II(PSII)的光抑制机理,对光抑制研究发展的历程进行了回顾,综述了光抑制的防御机制如热耗散、电子传递、活性氧清除机制、光合能力提高等,阐述了光抑制的影响因素包括低温胁迫、光照强度、水分胁迫、盐胁迫及CO2浓度等。最后提出了研究中存在的问题及今后的方向。更多还原

【Abstract】 Photoinhibition of photosynthesis is a physiological stress that occurs in all plants, not only under high light stress, but also under other environmental stresses including low temperature, drought, flooding, salt stress and high CO2 concentration. In recent years, many research achievements have been reported on the nature and the mechanism of photoinhibition. In this article, the authors summarize the photoinhibition mechanism of Photosystem I(PSI) and Photosystem II(PSII); review the development of photoinhibition;analyze the defensive mechanisms against photoinhibition, e.g. heat dissipation, electron transfer, activated oxygen clearance, improved photosynthetic capacity and etc. Furthermore, the authors elaborate on the factors affecting photoinhibition, including the low temperature stress, light exposure intensity, water stress, salt stress,CO2 concentration and etc. Taken together, the authors discuss the problems and the future directions of the research.更多还原