《植物生理学报》 2011, 47(9): 840-846

植物SABATH甲基转移酶研究进展

黄铭坤, 何杰玲, 范燕萍∗

华南农业大学园艺学院, 花卉研究中心, 广州510642

通信作者：范燕萍；E-mail: fanyanping@scau.edu.cn；Tel: 020-85288267

摘　要：

近年来对植物甲基转移酶(methyltransferases, MTs)的研究发现了新一类成员, 并用最初发现的3个酶将其命名为SA- BATH甲基转移酶(SABATHMTs), 这3个酶分别是水杨酸羧基甲基转移酶(salicylic acid carboxyl methyltransferases, SAMT)、苯甲酸羧基甲基转移酶(benzoic acid carboxyl methyltransferases, BAMT)和可可碱合酶(theobromine synthase)。 SABATHMTs能对植物激素和其他一些小分子物质进行N位或O位甲基化形成相应的甲基化产物, 在植物次生代谢、发育 及防御中起重要作用。本文从SABATHMTs潜在底物、进化及调控等方面综述了近年来对该家族的研究。

关键词：SABATHMTs; 甲基转移酶; 次生代谢

收稿：2011-06-09   修定：2011-07-26

资助：广东省花卉产业技术体系专项资金项目。

Current Reviews of Plant SABATH Methyltransferases

HUANG Ming-Kun, HE Jie-Ling, FAN Yan-Ping*

Center of Flower Research, College of Horticulture, South China Agricultural University, Guangzhou 510642, China

Corresponding author: FAN Yan-Ping; E-mail: fanyanping@scau.edu.cn; Tel: 020-85288267

Abstract:

Recently, a new class of methyltransferases (MTs) has been found in plants. They are named SABATHMTs by the first three identified enzymes namely salicylic acid carboxyl methyltransferases (SAMT), benzoic acid carboxyl methyltransferases (BAMT) and theobromine synthase. The SABATHMT proteins are able to catalyze both O-methylation and N-methylation of phytohormones and other small molecules with the formation of corresponding methylated ester. These esters play an important role in regulation of plant secondary metabolism, development and defenses. Here, we summarize the progress of SABATHMT research on identification of substrates, expression patterns and evolution in plants.

Key words: SABATHMTs; methyltransferases; secondary metabolism