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Inhibition of shoot branching by new terpenoid plant hormones

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 wi... Full description

Journal Title: Nature 2008, Vol.455 (7210), p.195-200
Main Author: Yamaguchi, Shinjiro
Other Authors: Umehara, Mikihisa , Hanada, Atsushi , Yoshida, Satoko , Akiyama, Kohki , Arite, Tomotsugu , Takeda-Kamiya, Noriko , Magome, Hiroshi , Kamiya, Yuji , Shirasu, Ken , Yoneyama, Koichi , Kyozuka, Junko
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: London: Nature Publishing
ID: ISSN: 0028-0836
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title: Inhibition of shoot branching by new terpenoid plant hormones
format: Article
creator:
  • Yamaguchi, Shinjiro
  • Umehara, Mikihisa
  • Hanada, Atsushi
  • Yoshida, Satoko
  • Akiyama, Kohki
  • Arite, Tomotsugu
  • Takeda-Kamiya, Noriko
  • Magome, Hiroshi
  • Kamiya, Yuji
  • Shirasu, Ken
  • Yoneyama, Koichi
  • Kyozuka, Junko
subjects:
  • Analysis
  • Arabidopsis - drug effects
  • Arabidopsis - genetics
  • Arabidopsis - growth & development
  • Biological and medical sciences
  • Biosynthesis
  • Chemical agents
  • Fundamental and applied biological sciences. Psychology
  • Gene expression
  • Gene Expression Regulation, Plant
  • Genetic aspects
  • Lactones - analysis
  • Lactones - chemistry
  • Lactones - metabolism
  • Lactones - pharmacology
  • Mutation
  • Oryza - drug effects
  • Oryza - growth & development
  • Oryza - metabolism
  • Oryza - parasitology
  • Parasitism
  • Parasitism and symbiosis
  • Plant Growth Regulators - analysis
  • Plant Growth Regulators - chemistry
  • Plant Growth Regulators - metabolism
  • Plant Growth Regulators - pharmacology
  • Plant hormones
  • Plant physiology
  • Plant physiology and development
  • Plant Roots - parasitology
  • Plant Shoots - drug effects
  • Plant Shoots - growth & development
  • Seedlings
  • Terpenes - analysis
  • Terpenes - chemistry
  • Terpenes - metabolism
  • Terpenes - pharmacology
  • Vegetative apparatus, growth and morphogenesis. Senescence
ispartof: Nature, 2008, Vol.455 (7210), p.195-200
description: 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.
language: eng
source:
identifier: ISSN: 0028-0836
fulltext: no_fulltext
issn:
  • 0028-0836
  • 1476-4687
  • 1476-4679
url: Link


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titleInhibition of shoot branching by new terpenoid plant hormones
creatorYamaguchi, Shinjiro ; Umehara, Mikihisa ; Hanada, Atsushi ; Yoshida, Satoko ; Akiyama, Kohki ; Arite, Tomotsugu ; Takeda-Kamiya, Noriko ; Magome, Hiroshi ; Kamiya, Yuji ; Shirasu, Ken ; Yoneyama, Koichi ; Kyozuka, Junko
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descriptionShoot 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.
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subjectAnalysis ; Arabidopsis - drug effects ; Arabidopsis - genetics ; Arabidopsis - growth & development ; Biological and medical sciences ; Biosynthesis ; Chemical agents ; Fundamental and applied biological sciences. Psychology ; Gene expression ; Gene Expression Regulation, Plant ; Genetic aspects ; Lactones - analysis ; Lactones - chemistry ; Lactones - metabolism ; Lactones - pharmacology ; Mutation ; Oryza - drug effects ; Oryza - growth & development ; Oryza - metabolism ; Oryza - parasitology ; Parasitism ; Parasitism and symbiosis ; Plant Growth Regulators - analysis ; Plant Growth Regulators - chemistry ; Plant Growth Regulators - metabolism ; Plant Growth Regulators - pharmacology ; Plant hormones ; Plant physiology ; Plant physiology and development ; Plant Roots - parasitology ; Plant Shoots - drug effects ; Plant Shoots - growth & development ; Seedlings ; Terpenes - analysis ; Terpenes - chemistry ; Terpenes - metabolism ; Terpenes - pharmacology ; Vegetative apparatus, growth and morphogenesis. Senescence
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descriptionShoot 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.
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abstractShoot 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.
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doi10.1038/nature07272
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