《植物生理学报》 2011, 47(4): 367-372

激素对水稻分蘖芽生长和分蘖相关基因表达的调控效应

刘杨, 丁艳锋, 王强盛, 李刚华, 王绍华*

南京农业大学农学院/农业部南方作物生理生态重点开放实验室, 南京210095

通信作者：王绍华；E-mail: wshnau@126.com；Tel: 025-84396475

摘　要：

以水稻品种‘南粳44’为材料, 研究了植物激素对水稻分蘖芽生长及OsTB1、OsD3、OsD10和OsD27等基因表达的调 控。结果表明, 水稻分蘖芽生长的调控至少存在两条途径, 一条通过调控分蘖芽中CTK含量进而调控OsTB1等基因表达来 实现, 另一条通过调控OsD3、OsD10和OsD27等系列基因表达来实现。外源IAA和GA3对水稻分蘖芽生长的调控是通过这 两条途径共同实现的。

关键词：水稻; 激素; 基因; 分蘖芽

收稿：2010-12-01   修定：2011-03-11

资助：国家自然科学基金(31071364)和江苏省自然科学基金(BK2010449)。

Effect of Hormones on the Growth of Rice Tiller Bud and the Expression of the

LIU Yang, DING Yan-Feng, WANG Qiang-Sheng, LI Gang-Hua, WANG Shao-Hua*

Agronomy College, Nanjing Agricultural University/Key Laboratory of Crop Physiology & Ecology in Southern China, Ministry of Agriculture, Nanjing 210095, China

Corresponding author: WANG Shao-Hua; E-mail: wshnau@126.com; Tel: 025-84396475

Abstract:

In the present study, ‘Nanjing 44’ was used to investigate the effects of hormones on rice (Oryza sativa) tiller bud growth and the expression of OsTB1, OsD3, OsD10 and OsD27. The results show that external IAA and GA₃ might have regulated tiller bud growth by at least two means: one is regulating the CTK content and the expression level of OsTB1 in tiller buds, and another is regulating the expression levels of OsD3, OsD10 and OsD27 in tiller buds.

Key words: rice (Oryza sativa); hormone; gene; tiller bud