α-Amylase production is induced by sulfuric acid in rice aleurone cells |
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| Authors: | Shin-ichiro Mitsunaga Midori Kobayashi Satoe Fukui Kayoko Fukuoka Osamu Kawakami Junji Yamaguchi Masahiro Ohshima Toshiaki Mitsui |
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| Affiliation: | Faculty of Education, Joetsu University of Education, 1 Yamayashiki, Joetsu, Niigata, Japan. mitunaga@juen.ac.jp |
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| Abstract: | The hydrolytic enzyme alpha-amylase (EC 3.2.1.1) is produced mainly in aleurone cells of germinating cereals, and the phytohormone gibberellin (GA) is essential for its induction. However, in rice (Oryza sativa L.), sulfuric acid (H(2)SO(4)) induces alpha-amylase production in aleurone tissue even in the absence of GA. Here, the pre-treatment of rice aleurone cells with H(2)SO(4) and incubation in water induced alpha-amylase activity, as if the cells had been incubated in GA solution. |
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| Keywords: | Rice α -Amylase Aleurone cells Gibberellin Sulfuric acid |
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