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干旱过程中露花叶片PEPCase酶蛋白量的变化

王岳浩, 陈景治, 施教耐

中国科学院上海植物生理研究所

摘要

报道了露花在CAM途径诱导过程中PEPCase活性水平、蛋白量和RubisCo 蛋白 量变化的规律。露花叶片中PEPCase活性水平及蛋白量受叶片发育状况的控制, 干旱引起的这两者的变化在中部成熟叶片中最明显, 在幼嫩叶片中最小。图6表1 参16

关键词： 露花; 干旱; 叶片; PEPC酶

Change in protein mass of PEP carboxylase in the leaves of Mesembryanthemum cordifolium under drought

Wang Yuehao, Chen Jingzhi, Shi Jiaonai

Shanghai Inst. Plant Physiol., Acad. Sin.

Abstract

The level of PEP-carboxylase activity in the leaves of M. cordifolium, an inducible CAM plant, increased greatly after drought and salt stress. Marked increase in PEP-carboxylase protein after drought was shown. Parallelism in the change of the activity level and protein mass of PEP-carboxylase was observed in the course of drought treatment, showing that the increase in PEP-carboxylase activity was due to the increase in its protein mass. After rewatering, the levels of PEP-carboxylase activity and protein mass decreased simultaneously, and , two weeks later, both of them decreased to the same levels as those before drought. Increase in PEP-carboxylase level and decrease in RubisCO level may be part of the biochemical features of CAM induction by drought in M. cordifolium. After drought, the most marked increase in PEP-carboxylase activity and protein mass was observed in middle mature leaves, little change can be seen in the youngest leaf.

Key words: Mesembryanthemum;Cardifolium;*Inducible CAM;Drought

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引用本文：

王岳浩, 陈景治, 施教耐. 干旱过程中露花叶片PEPCase酶蛋白量的变化[J]. 生理学报 1991; 43 (2): .

Wang Yuehao, Chen Jingzhi, Shi Jiaonai. Change in protein mass of PEP carboxylase in the leaves of Mesembryanthemum cordifolium under drought. Acta Physiol Sin 1991; 43 (2): (in Chinese with English abstract).