Effects of Light Stress on Oxygen Evolution and Photochemical Energy Stor age of Hybrid Poplar Clones Determined by Photoacoustic Technique

作     者：张守仁 高荣孚 

作者机构：中国科学院植物研究所植被数量生态学开放研究实验室北京100093 北京林业大学生物学院北京100083 

出 版 物：《Acta Botanica Sinica》 (Acta Botanica Sinica（植物学报：英文版）)

年 卷 期：2000年第42卷第8期

页      面：818-823页

核心收录：

学科分类：0710[理学-生物学] 0907[农学-林学] 08[工学] 09[农学] 0829[工学-林业工程] 0903[农学-农业资源与环境] 

主　　题：hybrid poplar clones light stress oxygen evolution signal photochemical energy storage photoacoustics inhibitors 

摘      要：The oxygen evolution, thermal dissipation, and photochemical energy storage of three hybrid poplar clones, namely the triploid clone B342, the diploid clone B11 [(Populus alba×P. glandulosa)×(***×***)], and the triploid clone B346 [(***×P. bolleana)×(P. alba×***)], under light stress were studied using photoacoustics. The oxygen evolution signal and photochemical energy storage varied negatively with the pretreatment_PFD (photon flux density), whereas the thermal signal varied positively with the pretreatment_PFD. Photochemical energy storage was reallocated to PSⅡ more than to PSⅠ, while the photochemical energy storage in PSⅠ was more stable than that in PSⅡ when subjected to light stress. The inhibitors streptomycin (SM), dithiothreitol (DTT) and sodium fluoride (NaF) could all affect the oxygen evolution signal. Clones B11 and B342 were more resistant to light stress than clone B346.