Differential Expression of ADC mRNA during Development and upon Acid Stress in Soybean (Glycine max) Hypocotyls
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概要
- 論文の詳細を見る
Arginine decarboxylase (ADO is one of the key enzymes in the biosynthesis of putrescine in plants. The regulation of its activity depends on the physiological condition, developmental stage, and type of tissue. We have cloned ADC cDNA from soybean (Glycine max) hypocotyls to understand the regulation mechanisms of this enzyme activity. Using the cDNA clone, we examined the relationship between changes in the ADC activity and the level of ADC mRNA during development, in different tissues, and upon acid stress. The ADC activity began to increase 2 d after initiation of germination, reached a peak at the 5th d, and then declined. This change in the enzyme activity was preceded by similar changes in the level of the mRNA. The ADC activity was expressed tissue-specifically; this expression was well corelated with the mRNA content of the respective tissues. Incubation of the 5-d-old hypocotyls in pH 3 potassium phosphate solution caused a rapid increase in ADC activity. Within 2 h of acid treatment, the ADC activity increased more than threefold. This increase was also preceded by a corresponding increase in the mRNA content and was also regulated tissue-specifically. These results suggest that the change in the content of ADC mRNA has an important role in the regulation of the enzyme activity during early development, in different tissues, and upon acid stress.
- 日本植物生理学会の論文
著者
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LEE Joo
Departments of Surgery, Seoul National University College of Medicine
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LEE Sun
Department of Nuclear Engineering, Chosun University
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Lee S
Yonsei Univ. Seoul Kor
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Lee J
Kookmin Univ. Seoul Kor
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Nam Kyoung
Department of Biology, Yonsei University
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Nam K
Univ. Michigan Mi Usa
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Lee Joo
Department Of Biology Yonsei University
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Lee Sun
Department Of Biotechnology Yonsei University
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Nam Kyoung
Department Of Biological Science Sookmyung Women's University
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Lee Sun
Department Of Biological Scienceand Basic Science Research Institute Sungkyunkwan University
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Lee JooHun
Department of Biology, Yonsei University
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