期刊
NATURE
卷 455, 期 7210, 页码 195-U29出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nature07272
关键词
-
资金
- MEXT of Japan [1820810, 19678001, 19780040]
- MAFF of Japan (Genomics for Agricultural Innovation) [IPG0001]
- RIKEN Special Postdoctoral Researchers Program
- Grants-in-Aid for Scientific Research [19678001, 19780040] Funding Source: KAKEN
Shoot branching is a major determinant of plant architecture and is highly regulated by endogenous and environmental cues. Two classes of hormones, auxin and cytokinin, have long been known to have an important involvement in controlling shoot branching. Previous studies using a series of mutants with enhanced shoot branching suggested the existence of a third class of hormone( s) that is derived from carotenoids, but its chemical identity has been unknown. Here we show that levels of strigolactones, a group of terpenoid lactones, are significantly reduced in some of the branching mutants. Furthermore, application of strigolactones inhibits shoot branching in these mutants. Strigolactones were previously found in root exudates acting as communication chemicals with parasitic weeds and symbiotic arbuscular mycorrhizal fungi. Thus, we propose that strigolactones act as a new hormone class - or their biosynthetic precursors - in regulating above- ground plant architecture, and also have a function in underground communication with other neighbouring organisms.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据