Analysis of brassinosteroid signaling mutants <I>bil5</I> and <I>bpg1</I>
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- Nakano Takeshj
- RIKEN, DRI
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- Yamagami Ayumi
- RIKEN, DRI Ochanomizu Women Univ.
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- Kobayashi MAsatomo
- RIKEN, BRC
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- Seki Motoaki
- RIKEN, GSC
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- Sakuta Masaaki
- Ochanomizu Women Univ.
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- Shinozaki Kazuo
- RIKEN, PSC
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- Tsujimoto Masahumi
- RIKEN, DRI
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- Yoshida Shigeo
- RIKEN, PSC
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- Chory Joanne
- Salk Inst.
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- Asami Tadao
- RIKEN, DRI
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>bil5</I>, <I>bpg1</I>の機能解析
Abstract
Brz (brassinazole) was synthesized as the first specific inhibitor of brassinosteroid biosynthesis. Target of Brz220 is the cytochrome P450 enzyme encoded by DWF4. 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 bil mutants (Brz-insensitive-long hypocotyl). We identified a semidominant mutant, bil5, from fast neutron-treated lines. Hypocotyl elongation of these plants on Brz medium was at least twice that of the wild type. Adult bil5 plants showed pale green, thin stems, thin leaves and shortened stem length. The pale-green leaves of bil5 were in contrast to the dark-green leaves of brassinosteroid-deficient mutants, and chloroplast gene expression was lower in bil5 than in wild type. We also identified a pale green mutant bpg1 (Brz-insensitive-pale green1) that could not be recovered to high green by Brz in the light.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2006 (0), 411-411, 2006
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390282680604950784
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- NII Article ID
- 130006988528
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed