title: Rice GH3 gene family: regulators of growth and development.
abstract: Auxin 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 paralogues 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.
authors: Huazhong Agricultural University, Wuhan, China.
authors: Jing
authors: J
authors: Fu
authors: Huihui
authors: H
authors: Yu
authors: Xianghua
authors: X
authors: Li
authors: Jinghua
authors: J
authors: Xiao
authors: Shiping
authors: S
authors: Wang
mesh_terms: D018506:Gene Expression Regulation, Plant / Q000235:genetics / Q000502:physiology; D007210:Indoleacetic Acids / Q000378:metabolism; D012275:Oryza / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D018517:Plant Roots / Q000235:genetics / Q000254:growth & development / Q000378:metabolism
chemical_list: D007210:Indoleacetic Acids; D010940:Plant Proteins; C030737:indoleacetic acid