Distribution of Indole-3-Acetic Acid in the Apoplast and Symplast of Squash (Cucurbita mexima) Hypocotyls
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概要
- 論文の詳細を見る
The concentration of endogenous IAA was higher in an apoplastic solution (2.3×10^<-7> M) than in a symplastic solution (0.5×10^<-7> M) obtained from segments of etiolated squash (Cucurbita maxima Duch.) hypocotyls. Exogenously applied IAA (10^<-5> M) increased the level of IAA in both the apoplastic and the symplastic solution. The concentration of IAA in the apoplastic solution increased to 75% of the concentration of exogenous IAA in 4 h, but that in the symplastic solution increased only to 23% of the concentration of exogenous IAA. These results demonstrate that the concentration of endogenous IAA is higher in the apoplast than in the symplast of squash hypocotyls, and they suggest that IAA exerts its physiological effects, at least to some extent, from the outside of cells.
著者
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Sakurai Naoki
Department Of Biology Faculty Of Science Osaka City University:(present)department Of Environmental
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Tsurusaki Ken-ichi
Faculty Of Liberal Arts Fukuyama University
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Sakurai Naoki
Department Of Environmental Studies Faculty Of Integrated Arts&sciences Hiroshima University
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Masuda Yasuko
Department of Environmental Studies, Faculty of Integrated Arts&Sciences, Hiroshima University
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Sakurai Naoki
Department Of Biology
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Masuda Yasuko
Department Of Environmental Studies Faculty Of Integrated Arts&sciences Hiroshima University
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Masuda Yasuko
Department of Clinical Laboratory, Sado General Hospital
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