Analysis of brassinosteroid signaling mutant [I]bil[/I] ([I]Brz-insensitive-long hypocotyl[/I])
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- Nakano Takeshi
- RIKEN, Plant Functions Lab.
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- Sato Tomomi
- RIKEN, Plant Functions Lab.
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- Yin Yanhai
- Salk Inst/HMMI
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- Kiuchi Reiko
- RIKEN, PSC
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- Fujioka Shozo
- RIKEN, Plant Functions Lab.
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- Yoshida Shigeo
- RIKEN, Plant Functions Lab. RIKEN, PSC
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- Chory Joanne
- Salk Inst/HMMI
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- Asami Tadao
- RIKEN, Plant Functions Lab.
Bibliographic Information
- Other Title
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- ブラシノステロイド情報伝達突然変異体<I>bil</I>の機能解析
Abstract
Brz (brassinazole) was synthesized as the first specific inhibitor of brassinosteroid biosynthesis by Asami et al. Target of Brz220 is the cytochrome P450 enzyme encoded by [I]DWF4[/I]. In order to analyze in detail the mechanisms of brassinosteroid signal transduction, we screened for mutants that showed longer hypocotyls than wild type when grown with Brz220 in the dark, and designated [I]bil[/I] mutants ([I]Brz-insensitive-long hypocotyl[/I]). We identified a recessive mutant, [I]bil5[/I], from fast neutron-treated lines. Hypocotyl elongation of these plants on Brz medium was less than that of [I]bil1-D[/I], but still at least twice that of the wild type. Interestingly, adult [I]bil5[/I] plants showed pale green, thin stems, thin leaves and shortened stem length. The pale-green leaves of [I]bil5[/I] were in contrast to the dark-green leaves of brassinosteroid-deficient mutants, and chloroplast gene expression was lower in [I]bil5[/I] than in the wild type.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2004 (0), 339-339, 2004
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390282680604044160
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- NII Article ID
- 130006987524
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed