Stimulation of auxin-induced elongation of cucumber hypocotyl sections by dihydroconiferyl alcohol. Dihydroconiferyl alcohol inhibits indole-3-acetic acid degradation in vivo and in vitro
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概要
- 論文の詳細を見る
The mechanism by which dihydroconiferyl alcohol (DCA) stimulates indole-3-acetic acid (IAA)-induced elongation of cucumber hypocotyl sections was studied. Although DCA did not affect the uptake of IAA-5-^3H by hypocotyl sections, the endogenous level of IAA-5-^3H in DCA-treated sections was much higher than in DCA-untreated ones. IAA-5-^3H in the incubation medium was degraded in the presence of hypocotyl sections, and this degradation of IAA was inhibited by DCA. An in vitro experiment with horseradish peroxidase revealed that DCA inhibited the IAA-degrading activity of the oxidase, as did caffeic acid and ferulic acid. These results suggested that DCA enhances IAA-induced cucumber hypocotyl elongation by acting as an antioxidant of IAA.
- 日本植物生理学会の論文
著者
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Sakurai Naoki
Department Of Environmental Studies Faculty Of Integrated Arts And Sciences Hiroshima University
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KAMISAKA Seiichiro
Department of Biology, Faculty of Science, Osaka City University
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Sakurai Naoki
Department Of Biology Faculty Of Science Osaka City University:(present)department Of Environmental
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Shibata Kozo
Department of Chemistry, Faculty of Science, Osaka City University
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Shibata Kozo
Department Of Chemistry Faculty Of Science Osaka City University
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Kamisaka Seiichiro
Department Of Biology And Geosciences Graduate School Of Science Osaka City University
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Sakurai Naoki
Department Of Biology
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Kamisaka Seiichiro
Department Of Biology
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