独脚金内酯途径相关基因的研究进展  

Progress in Cloning of Strigolactone-Related Genes

作　　者：王闵霞[1,2] 彭鹏[2] 龙海馨 王平[1] 白玉路[1] 李学勇[2] 

机构地区：[1]四川省农业科学院生物技术核技术研究所,成都610066 [2]中国农业科学院作物科学研究所、农作物基因资源与基因改良国家重大科学工程,北京100081

出　　处：《分子植物育种》2014年第3期603-609,共7页Molecular Plant Breeding

基　　金：国家自然科学基金(31271311);国家转基因专项(2013ZX08009-003)共同资助

摘　　要：独脚金内酯是一类萜内酯,最新研究证明独脚金内酯是一种可调控植物株型发育的新型植物激素,作为一种长距离信号分子来抑制植物分枝。独脚金内酯参与的植物分枝途径被称为类胡萝卜素衍生的MAX/RMS/D途径。至今独脚金内酯的合成和信号传导途径尚不清晰,已克隆的基因亦有限。本文综述了独脚金内酯途径中相关基因的研究进展,参与合成途径的基因包括编码同源蛋白CCD7的MAX3/RMS5/DAD3/D17/HTD1、编码同源蛋白CCD8的MAX4/RMS1/DAD1/D10、编码细胞色素P450单加氧酶的MAX1、以及编码β-胡萝卜素异构酶的D27;参与信号传导途径的基因包括编码核内高亮氨酸重复F-box蛋白的MAX2/RMS4/D3、编码α/β水解酶家族成员的D14/D88/HTD2、编码TCP家族转录因子的TB1、以及编码独脚金内酯信号传导途径抑制因子的D53。这些基因分别从水稻、拟南芥、矮牵牛、豌豆等多分枝突变体中克隆得到。本文还就独脚金内酯未来发展方向进行了展望。Strigolactones （SLs） are terpenoid lactone, which were proved to be a new type of plant hormone to regulate plant architecture development. SLs and their derivatives are considered as a long-distance signaling molecules to inhibit plant branching. The SLs participated branching pathway was termed as the carotenoid-derived MAX/RMS/D pathway. The SLs biosynthesis and signaling pathways were still not unclear, only a few related genes were cloned in recent years. The SLs related genes were reviewed in this paper. Genes involved in SLs biosynthesis includes MAX 3/RMS5/DAD3/D 17/H TD1 encoding homologous CCD 7, MAX 4/RMS 1/DAD1/D10 encoding homologous CCD8, MAX1 encoding Cytochrome P450 monooxygenase, D27 encoding β-carotene isomerase. Genes involved in the SLs signaling pathway includes MAX2/RMS4/D3 encoding a homologous nuclear F-box leucine- trich repeat （LRR） protein, D14 encoding a protein of α/β-fold hydrolase superfamily, TB1/FC1/OsTB1 encoding TCP family transcription factor, and D53 encoding a repressor of strigolactone signaling. These genes were cloned from high-tillering mutants from different plant species such as rice, Arabidapsis, petunia and pea. Opinions about future directions of SLs study were also put forward by us in this paper.

关 键 词：独脚金内酯 生物合成 信号传导 基因 研究进展 

分 类 号：R282.5[医药卫生—中药学]