Light-Regulated Expression of the Gene for C_4-Form Phosphoenolpyruvate Carboxylase in Maize : Destabilization of mRNA by Okadaic Acid
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概要
- 論文の詳細を見る
In Zea mays the transcripts of the phosphoenolpyruvate carboxylase (PEPC) gene for C_4 photosynthesis (Ppc1A) is known to be accumulated during greening of etiolated leaves in response to light. Effects of several kinds of inhibitors on this light-induction were investigated. The accumulation of Ppc1A mRNA was almost completely inhibited by 0.1 μM okadaic acid (OA), a protein phosphatase (PP)1 and PP2A inhibitor as revealed by northern blot analysis. In contrast, staurosporine (ST) and K252a, protein kinase inhibitors, were not effective. Diurnal change of Ppc1A mRNA level in green leaves was also collapsed by 0.1 μM OA. Accumulation of the transcripts of light harvesting chlorophyll a/b binding protein genes(Cab) during greening was also inhibited by OA, but that of the gene for a non-photosynthetic C_3-form PEPC(Ppc1B) was not. Run-on transcription analysis showed that though the transcriptional rates of Ppc1A and Cab were increased by exposure of etiolated seedlings to light, their rates were not affected by 1 μM OA. Taken together, it was proposed that a certain PP is involved in the high-level accumulation of Ppc1A mRNA under light condition through stabilization of its transcripts.
- 日本植物生理学会の論文
著者
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泉井 桂
近畿大学生物理工学部生物工学科
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Izui Katsura
Laboratory Of Plant Physiology Graduate School Of Biostudies Kyoto University
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Izui Katsura
Division Of Applied Biosciences Graduate School Of Agriculture Kyoto University
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Izui Katsura
Laboratory Of Plant Physiology Division Of Applied Biosciences Graduate School Of Agriculture Kyoto
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HATA Shingo
Laboratory of Plant Physiology, Graduate School of Agriculture, Kyoto University
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Hata Shingo
Laboratory Of Plant Physiology Division Of Applied Biosciences Graduate School Of Agriculture Kyoto
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Hata Shingo
Laboratory Of Plant Pathology Division Of Environmental Science Of Bioresource Production Graduate S
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Ishiyama Keiki
Graduate School Of Agricultural Science Tohoku University
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Ishiyama Keiki
Riken Plant Science Center
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Kurotani Ken-ichi
Laboratory of Plant Physiology, Division of Applied Biosciences, Graduate School of Agriculture, Kyo
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Hata Shingo
Laboratory Of Crop Science Graduate School Of Bioagricultural Sciences Nagoya University
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Kurotani Ken-ichi
Laboratory Of Plant Physiology Division Of Applied Biosciences Graduate School Of Agriculture Kyoto
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Kurotani Ken-ichi
Laboratory Of Plant Molecular Genetics Nara Institute Of Science And Technology
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