《植物生理学报》 2017, 53(3): 339-351

土壤水分亏缺下棉花叶片光破坏防御机制研究进展

易小平, 张亚黎, 姚贺盛, 张旺锋^*

石河子大学新疆生产建设兵团绿洲生态农业重点实验室, 新疆石河子832003

通信作者：张旺锋；E-mail: zwf_shzu@163.com; zhwf_agr@shzu.edu.cn

摘　要：

干旱是影响植物生长发育和产量形成的重要环境因素。为了适应干旱环境, 植物形成了一系列保护光合机构免受损伤的光破坏防御机制。棉花(Gossypium spp.)抗旱性较强, 即使在中度土壤水分亏缺条件下光合机构也未产生慢性光抑制现象。本文简要地综述了土壤水分亏缺对棉花叶片碳同化能力的影响, 以及水分亏缺条件下棉花叶片的光抑制情况; 阐明了水分亏缺下棉花叶片的光破坏防御机制, 并对大田棉花适应土壤水分亏缺的研究提出了展望。

关键词：水分亏缺; 棉花; 光抑制; 光保护

收稿：2016-09-30   修定：2017-01-08

资助：国家自然科学基金(31260295和U1203283)。

Research progress of the photoprotective mechanisms of cotton leaves under soil water deficit

YI Xiao-Ping, ZHANG Ya-Li, YAO He-Sheng, ZHANG Wang-Feng^*

Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group–Shihezi University, Shihezi, Xinjiang 832003, China

Corresponding author: ZHANG Wang-Feng; E-mail: zwf_shzu@163.com; zhwf_agr@shzu.edu.cn

Abstract:

Drought is considered to be the most limiting environmental factor, limiting plant growth, development and yield. In order to adapt to drought environment, plants have evolved multiple photoprotective mechanisms to protect the photosynthetic apparatus from photodamage. Cotton is regarded as a drought tolerant crop, and drought does not lead to chronic photoinhibition of photosynthetic apparatus even moderate drought. This paper briefly reviews the following three aspects: effect of water deficit on photosynthesis; effect of water deficit on photoinhibition; possible photoprotective mechanisms under water deficit. Further research on the adaptation mechanism of field-grown cotton plants to water deficit has also been discussed.

Key words: water deficit; cotton; photoinhibition; photoprotection