Regulation of Brassinosteroid Biosynthesis and Inactivation  

作　　者：Baolin Zhao Jia Li 

机构地区：[1]Key Laboratory of Cell Activities and Stress Adaptations,Ministry of Education,School of Life Sciences,Lanzhou University,Lanzhou 730000,China

出　　处：《Journal of Integrative Plant Biology》2012年第10期746-759,共14页植物学报（英文版）

基　　金：supported by grants from the National Natural Science Foundation of China(91117008and90917019);by the Ministry of Science and Technology(2011CB915401)

摘　　要：Brassinosteroids （BRs） are a group of naturally-occurring steroidal phytohormones playing fundamental roles during normal plant growth and development. Using a combination of experimental approaches, including analytical chemistry, genetics, and biochemistry, the major BR biosynthetic pathway has been largely elucidated. The least-understood knowledge in the BR research field is probably the molecular mechanisms controlling the bioactive levels of BRs in response to various developmental and environmental cues. In this review, we focus our discussion on a recently-proposed, 8-step predominant BR biosynthetic pathway, several newly-identified transcription factors regulating the expression of key enzymes that catalyze BR biosynthesis, and up-to-date information about the mechanisms that plants use to inactivate unnecessary BRs.Brassinosteroids （BRs） are a group of naturally-occurring steroidal phytohormones playing fundamental roles during normal plant growth and development. Using a combination of experimental approaches, including analytical chemistry, genetics, and biochemistry, the major BR biosynthetic pathway has been largely elucidated. The least-understood knowledge in the BR research field is probably the molecular mechanisms controlling the bioactive levels of BRs in response to various developmental and environmental cues. In this review, we focus our discussion on a recently-proposed, 8-step predominant BR biosynthetic pathway, several newly-identified transcription factors regulating the expression of key enzymes that catalyze BR biosynthesis, and up-to-date information about the mechanisms that plants use to inactivate unnecessary BRs.

关 键 词：BRASSINOLIDE BRASSINOSTEROID BIOSYNTHESIS HOMEOSTASIS catabolism. 

分 类 号：Q946.88[生物学—植物学] S482.8[农业科学—农药学]