过刊浏览

水稻叶片生育过程中Rubis CO活性与光合、光呼吸的关系

魏锦城, Agata W

南京师范大学. 江苏,南京(210024)；日本九州大学. 福冈

摘要

水稻生育过程中, RuBP羧化酶活性与光合速率、RuBP加氧酶活性与光呼吸速率、RuBP羧化酶活性与加氧酶活性以及光合速率与光呼吸速率之间是相关的。籼型品种与粳型 品种间酶活性的高低及光合、光呼吸速率的高低基本一致, 籼型三系杂交稻(F_(1))无明显的光合优 势。酶的羧化活性的高低只在一定范围内与光合速率的高低平行, 在正常生育条件下, 酶蛋白的数量不是水稻光合速率的限制因子。图7表1参19

关键词： RuBP羧化酶－加氧酶; 光合作用; 光呼吸; 水稻

The relationships between ribulose-1,5-bisphosphate carboxylase-oxygenase activity and photosynthesis and photorespiration in rice leaves during the growth process

Wei Jincheng, Agata W

Department of Biology, Nanjing Normal University. Nanjing,Jiangsu

Abstract

Photosynthetic rate and RuBP carboxylase activities did not change significantly with the rise of leaf position but decreased with the advance of leaf age. The photorespiratory rate declined less than the photosynthetic rate, which could be explained by the fact that the variations of the ratio of RuBP oxygenase/carboxylase activities (%) which is considered to be reflecting photorespiratory capacity, increased from the younger leaves to older leaves. Correlation analysis showed that RuBP carboxylase activity vs. photosynthetic rate, RuBP carboxylase activity vs. RuBP oxygenase activity and RuBP carboxylase activity vs. soluble protein content were significantly correlated. The activity of RuBP oxygenase was also significantly correlated with photorespiratory rate.

Key words: RuBP carboxylase-ozygenase;Photosynthesis;Photorespiration;Rice

收稿日期：　　录用日期：

通讯作者：　　E-mail:

引用本文：

魏锦城, Agata W. 水稻叶片生育过程中Rubis CO活性与光合、光呼吸的关系[J]. 生理学报 1994; 46 (3): .

Wei Jincheng, Agata W. The relationships between ribulose-1,5-bisphosphate carboxylase-oxygenase activity and photosynthesis and photorespiration in rice leaves during the growth process. Acta Physiol Sin 1994; 46 (3): (in Chinese with English abstract).