Gibberellin metabolism and its regulation

被引：1496

作者：

Yamaguchi, Shinjiro ^{[1
]}

机构：

[1] RIKEN, Plant Sci Ctr, Yokohama, Kanagawa, Japan

来源：

ANNUAL REVIEW OF PLANT BIOLOGY | 2008年 / 59卷

基金：

英国生物技术与生命科学研究理事会;

关键词：

biosynthesis; cytochrome P450 monooxygenase; deactivation; 2-oxoglutarate-dependent dioxygenase; plant hormones; terpene synthases;

D O I：

10.1146/annurev.arplant.59.032607.092804

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Bioactive gibberellins (GAs) are diterpene plant hormones that are biosynthesized through complex pathways and control diverse aspects of growth and development. Biochemical, genetic, and genomic approaches have led to the identification of the majority of the genes that encode GA biosynthesis and deactivation enzymes. Recent studies have highlighted the occurrence of previously unrecognized deactivation mechanisms. It is now clear that both GA biosynthesis and deactivation pathways are tightly regulated by developmental, hormonal, and environmental signals, consistent with the role of GAs as key growth regulators. In some cases, the molecular mechanisms for fine-tuning the hormone levels arc beginning to be uncovered. In this review, I summarize our current understanding of the GA biosynthesis and deactivation pathways in plants and fungi, and discuss how GA concentrations in plant tissues are regulated during development and in response to environmental stimuli.

引用

页码：225 / 251

页数：27

共 142 条

[1] ent-kaurene synthase is located in proplastids of meristematic shoot tissues [J].