Functional Analysis of a JA-responsive Transcriptional Factor INU1
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- Sasaki-Sekimoto Yuko
- RIKEN PSC
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- Inui Kaoru
- Graduate school of Bioscience and Biotechnology, Tokyo Institute of Technology
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- Sakurai Nozomu
- Kazusa DNA Research Institute
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- Aoki Koh
- Kazusa DNA Research Institute
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- Suzuki Hideyuki
- Kazusa DNA Research Institute
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- Shibata Daisuke
- Kazusa DNA Research Institute
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- Ohta Hiroyuki
- Center for Biological Resources and Informatics, Tokyo Institute of Technology
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- Shirasu Ken
- RIKEN PSC
Bibliographic Information
- Other Title
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- ジャスモン酸で誘導されるbHLH型転写因子INU1の機能解析
Abstract
Jasmonates are lipid derived signaling molecules. Several stress conditions cause endogenous accumulation of jasmonates, and then plants activate jasmonates signalling. COI1-dependent degradation of transcriptional repressor proteins such as JAZs was a key step for the activation of JA-dependent gene expression. It was reported that MYC2, which is a jasmonate-responsive transcriptional factor, was a target of JAZs. After the degradation of JAZs, the released MYC2 regulates the expression of jasmonates-responsive genes. To identify new transcriptional regulators in jasmonates signaling, we did cluster analysis of jasmonates-responsive genes. We focused on a bHLH transcriptional factor and named it INU1. To analyze the INU1 function in Arabidopsis, we obtained a T-DNA insertion line (inu1-1). GeneChip analysis showed that flavonoid biosynthetic pathway was activated and the expression of PDF1.2 was not induced in MeJA-treated inu1-1. These were contrasting phenotypes of MYC2 knockout mutants. We will discuss about the phenotypes of myc2inu1 double mutants.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2009 (0), 0958-0958, 2009
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390282680608700800
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- NII Article ID
- 130006993453
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed