Rice GH3 gene family Regulators of growth and development

被引：48

作者：

Fu, Jing ^{[1
]}

Yu, Huihui ^{[1
]}

Li, Xianghua ^{[1
]}

Xiao, Jinghua ^{[1
]}

Wang, Shiping ^{[1
]}

机构：

[1] Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Natl Ctr Plant Gene Res Wuhan, Wuhan, Peoples R China

来源：

PLANT SIGNALING & BEHAVIOR | 2011年 / 6卷 / 04期

基金：

中国国家自然科学基金;

关键词：

auxin; GH3; gene; indole-3-acetic acid; Oryza sativa; root;

D O I：

10.4161/psb.6.4.14947

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A uxin is an indispensable hormone throughout the lifetime of nearly all plant species. Several aspects of plant growth and development are rigidly governed by auxin, from micro to macro hierarchies; auxin also has a close relationship with plant-pathogen interactions. Undoubtedly, precise auxin levels are vitally important to plants, which have many effective mechanisms to maintain auxin homeostasis. One mechanism is conjugating amino acid to excessive indole-3-acetic acid (IAA; main form of auxin) through some GH3 family proteins to inactivate it. Our previous study demonstrated that GH3-2 mediated broad-spectrum resistance in rice (Oryza sativa L.) by suppressing pathogen-induced IAA accumulation and downregulating auxin signaling. Here, we further investigated the expression pattern of GH3-2 and other GH3 family paralogs in the life cycle of rice and presented the possible function of GH3-2 on rice root development by histochemical analysis of GH3-2 promoter:GUS reporter transgenic plants.

引用

页码：570 / 574

页数：5

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