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D,L-甘油醛处理引起的小麦叶片表观光合量子效率的降低

袁琳, 许大全

中科院上海生命科学研究院植物生理生态研究所.上海 200032

摘要

D,L-甘油醛(磷酸核酮糖激酶抑制剂,10mmol/L)处理小麦旗叶1h可降低叶片净光合速率和表观量子效率。同时,光系统Ⅱ光化学效率(#DELTA#F/Fm^)、电子传递速率(ETR)和单位叶面积ATP含量均降低,而胞间二氧化碳浓度(Ci)和叶绿素荧光非光化学猝灭(NPQ)增加。这些结果说明,D,L-甘油醛引起的小麦旗叶表观量子效率降低是由于光合碳同化受阻对光合电子传递的反馈抑制。

关键词： 表观量子效率; 电子传递; 反馈抑制; 小麦

The decrease in apparent photosynthetic quantum yield in wheat leaves caused by D, L-glyceraldehyde treatment

Yuan Lin, Xu Daquan

Institute of Plant Physiology and Ecology,Shanghai Institutes for Biological Sciences,Chinese Academy of Sciences.Shanghai 200032

Abstract

These results indicate that after DLGA treatment the decline in apparent quantum yield in wheat flag leaves is due to the feedback inhibition of photosynthetic electron transport caused by restriction of carbon assimilation.

Key words: Apparent quantum yield;Electron transport;Feedback inhibition;Wheat

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引用本文：

袁琳, 许大全. D,L-甘油醛处理引起的小麦叶片表观光合量子效率的降低[J]. 生理学报 2001; 53 (5): .

Yuan Lin, Xu Daquan. The decrease in apparent photosynthetic quantum yield in wheat leaves caused by D, L-glyceraldehyde treatment. Acta Physiol Sin 2001; 53 (5): (in Chinese with English abstract).