An Unusual Spliced Variant of DELLA Protein, a Negative Regulator of Gibberellin Signaling, in Lettuce
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概要
- 論文の詳細を見る
DELLA proteins are negative regulators of the signaling of gibberellin (GA), a phytohormone regulating plant growth. DELLA degradation is triggered by its interaction with GID1, a soluble GA receptor, in the presence of bioactive GA. We isolated cDNA from a spliced variant of <I>LsDELLA1</I> mRNA in lettuce, and named it <I>LsDELLA1sv</I>. It was deduced that <I>LsDELLA1sv</I> encodes truncated LsDELLA1, which has DELLA and VHYNP motifs at the N terminus but lacks part of the C-terminal GRAS domain. The recombinant LsDELLA1sv protein interacted with both <I>Arabidopsis</I> GID1 and lettuce GID1s in the presence of GA. A yeast two-hybrid assay suggested that LsDELLA1sv interacted with LsDELLA1. The ratio of <I>LsDELLA1sv</I> to <I>LsDELLA1</I> transcripts was higher in flower samples at the late reproductive stage and seed samples (dry seeds and imbibed seeds) than in the other organ samples examined. This study suggests that LsDELLA1sv is a possible modulator of GA signaling in lettuce.
- Japan Society for Bioscience, Biotechnology, and Agrochemistryの論文
著者
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MITSUHASHI Wataru
Department of Bioresource Engineering, Yamagata University
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Toyomasu Tomonobu
Department Of Applied Biological Chemistry The University Of Tokyo:(present Address)department Of Bi
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Nakajima Masatoshi
Department Of Applied Biological Chemistry The University Of Tokyo
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Kitamura Jun
Deparment Of Omage Science And Technology Faculty Of Engineering
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Komatsu Yuki
Department Of Cardiology Tokyo Women's Medical University
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Suzuki Hiroyuki
Department Of Applied Physics School Of Science And Engineering Waseda University:(present Address)h
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Sawada Y
Department Of Bioresource Engineering Yamagata University
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Sawada Yoshiaki
Department Of Cytology Kyorin University School Of Health Science
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Asami Tadao
Department Of Applied Biological Chemistry The University Of Tokyo
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Umetsu Asami
Department Of Bioresource Engineering Yamagata University
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HONDA Ichiro
Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization
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Fukuda Machiko
Institute Of Vegetable And Tea Science National Agriculture And Food Research Organization
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