Effect of phytohormones on pectate lyase activity in ripening Musa acuminata

被引：37

作者：

Payasi, A ^{[1
]}

Misra, PC ^{[1
]}

Sanwal, GG ^{[1
]}

机构：

[1] Univ Lucknow, Dept Biochem, Lucknow 226007, Uttar Pradesh, India

来源：

PLANT PHYSIOLOGY AND BIOCHEMISTRY | 2004年 / 42卷 / 11期

关键词：

fruit ripening; Musa acuminata; Harichhal; Musaceae; pectate lyase; phytohormones; polygalacturonose;

D O I：

10.1016/j.plaphy.2004.10.011

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A differential activity peak of pectate lyase (PEL) was observed during ripening of banana fruits (Musa acuminata Harichhal) receiving different hormone treatments. Exposure of fruits to 25 ppm ethylene for 24 h, as well as dipping of M. acuminata fruits in 1 mM 2,4-dichlorophenoxy acetic acid (2,4-D) for 4 h, hastened fruit ripening. Both PEL activity peak and climacteric peak were observed on the 4th and 10th days of treatment with ethylene and 2,4-D, respectively, compared to the 16th day in control fruits. Gibberellic acid (GA) treatment retarded fruit ripening and both PEL activity and climacteric peaks were observed on the 19th day. Treatment of fruits with ethylene or 2,4-D also advanced the appearance of a polygalacturonase (PG) peak and GA delayed its appearance, but the activity peaks always appeared in post-climacteric fruits, in contrast to PEL activity peaks coinciding with the respiratory peaks. (C) 2004 Published by Elsevier SAS.

引用

页码：861 / 865

页数：5

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