Regulation of petiole elongation during shade-avoidance response is highly dependent on <I>ROT3</I> and <I>DOC1</I>
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- Kozuka Toshiaki
- Grad. Univ. Advanced Studies, School of Advanced Sciences
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- Horiguchi Gorou
- Grad. Univ. Advanced Studies, School of Life Science NIBB / OIS
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- Kim Gyung-Tae
- Dong-A University, Faculty of Natural Resources & Life Sciences
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- Tsukaya Hirokazu
- Grad. Univ. Advanced Studies, School of Advanced Sciences Grad. Univ. Advanced Studies, School of Life Science NIBB / OIS Kyoto Univ. Graduate School of Science
Bibliographic Information
- Other Title
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- 光シグナルによる葉柄特異的な伸長制御機構の解析 -<I>ROT3</I>と<I>DOC1</I>の相互作用-
Description
Light is the most important environmental information for control of development of leaves as major photosynthetic organs. We previously showed that phytochromes signals enhance leaf-blade expansion but suppress petiole elongation. Therefore, we hypothesized that integration between phytochrome signals and intrinsic factors of each organ plays an important role in controlling the organ-specific photomorphogenesis in leaves. To test this hypothesis, we analyzed rot3 and doc1 mutants of Arabidopsis thaliana. We previously reported that ROT3 encodes CYP90C1 that is involved in the brassinosteroid biosynthesis. The rot3 mutant showed a defect in phyB-dependent petiole elongation, but not in growth of hypocotyl and leaf blade. On the other hand, the doc1 mutant, that resembles the rot3 mutant, is believed to affect auxin transport, and analyses of the rot3 doc1 double mutant suggested the genetic interaction of these genes. Genetic relationship between these factors and light signal transduction pathways will be discussed.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2005 (0), 738-738, 2005
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390282680604323584
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- NII Article ID
- 130006987826
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed