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Oscillations in millisecond delayed light emission brought about by high CO_(2) concentration in wheat leaves

Ye Jiyu, Wang Yingjun, Li Deyao, Shen Yungang

Shanghai Institute of Plant Physiology,The Chinese Academy of Sciences. Shanghai 200032

Abstract

When CO_(2) content was increased from the ordinary air levels to a higher level( 5%), the millisecond delayed light emission (ms-DLE) of wheat leaves displayed strong oscillations, and was restored to original level by returning leaves to ordinary air . Increasing CO_(2) concentration in CO_(2)-free air to the level in the air caused a fall in DLE without oscillations, while oscillations could be induced by increasing CO_(2) concentration again and with its magnitude increasing with the concentration of CO_(2) ( Fig. 3). The DLE oscillations induced by high concentration of CO_(2) could be inhibited by nigericin.

Key words: Millisecond delayed light emission;Oscillations;Transmembrane proton gradient

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Citing This Article：

Ye Jiyu, Wang Yingjun, Li Deyao, Shen Yungang. Oscillations in millisecond delayed light emission brought about by high CO_(2) concentration in wheat leaves. Acta Physiol Sin 1997; 49 (2): (in Chinese with English abstract).