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盐胁迫下小麦苗叶片吡咯-5-羧酸还原酶活性和游离脯氨酸积累

吕芝香, 王正刚

南京大学生物系

摘要

受NaCl、KCl或MgCl_(2)胁迫的小麦幼苗, 当外部溶液的渗透势由-160kPa下降到-900kPa时, 叶片吡咯-5-羧酸还原酶(P5C))活性增高; 渗透势由-900kPa降低到-1 500kPa, 酶活性下降; 胁迫1d和2d的幼苗, 还原酶活性显著增加; 受NaCl胁迫又在ABA影响下的幼苗, P5C还原酶活性和脯氨酸含量高于仅受NaCl胁迫的幼苗。图5参20

关键词： 盐胁迫; 吡咯羧酸; 酶; 小麦; 脯氨酸

Pyrroline-5-carboxylate reductase activity and free proline accumulation in leaves of Triticum aestivum seedlings under salt stress

Lu Zhixiang, Wang Zhenggang

Dept. Biol., Nanjing Univ.

Abstract

Key words: Salt stress;Pyrroline-5-carboxylate reductase;Proline;Abscisic acid;

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引用本文：

吕芝香, 王正刚. 盐胁迫下小麦苗叶片吡咯-5-羧酸还原酶活性和游离脯氨酸积累[J]. 生理学报 1993; 45 (2): .

Lu Zhixiang, Wang Zhenggang. Pyrroline-5-carboxylate reductase activity and free proline accumulation in leaves of Triticum aestivum seedlings under salt stress. Acta Physiol Sin 1993; 45 (2): (in Chinese with English abstract).