中国水稻科学Issue(3)：223-231,9.DOI:10.3969/j.issn.1001-7216.2015.03.001
OsMAX1a，OsMAX1e 通过参与独角金内酯的合成调控水稻分蘖
OsMAX1a and OsMAX1e,Involved in the Biosynthesis of Strigolactones, Regulate Rice Tillering
王秀梅 1郑爱萍 1李平 1王世全 1梁越洋 1李玲 1贡常委 1王海鹏 1黄晓西 1李双成 1邓其明 1朱军1
作者信息
- 1. 四川农业大学 水稻研究所，四川 温江 611130
- 折叠
摘要
Abstract
Strigolactones (SLs)are a class of phytohormone which play essential roles in regulating rice tillering,and ATMAX1 in Arabidopsis encodind P450 is an important gene involved in the synthesis of SLs.Our study found five MAX1 homologous genes through BLAST,namely OsMAX1a ,OsMAX1b ,OsMAX1 c ,OsMAX1d and OsMAX1 e . Among them,OsMAX1a and OsMAX1 e have stable and high expression in rice tissues.Our experiments verified that the overexpression of OsMAX1a and OsMAX1 e in Arabidopsis rescued the max1 branched mutant phenotype,and the interference of OsMAX1a and OsMAX1 e expression in rice increased rice tillering number.Furthermore,enogenous GR24 application inhibited the expression of OsMAX1a and OsMAX1 e ,and P-starvation enhanced the expression of OsMAX1a and OsMAX1 e ,thus promoted the biosynthesis of SLs.In addition,IAA and Kinetin(a cytokinin:KT) treatment apparently had remarkable effect on the expression of OsMAX1a and OsMAX1 e .The results demonstrated that the expression of OsMAX1a and OsMAX1 e responded to the SLs level and they were involved in the synthesis of SLs and regulated rice tillering.关键词
独角金内酯/OsMAX1a/OsMAX1e/分蘖Key words
strigolactones/OsMAX1a/OsMAX1 e/tillering分类
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王秀梅,郑爱萍,李平,王世全,梁越洋,李玲,贡常委,王海鹏,黄晓西,李双成,邓其明,朱军..OsMAX1a，OsMAX1e 通过参与独角金内酯的合成调控水稻分蘖[J].中国水稻科学,2015,(3):223-231,9.
