title: Alpha-amylase production is induced by sulfuric acid in rice aleurone cells.
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.
authors.affiliation: Faculty of Education, Joetsu University of Education, 1 Yamayashiki, Joetsu, Niigata, Japan. mitunaga@juen.ac.jp
authors.forename: Shin-ichiro
authors.initials: S
authors.lastname: Mitsunaga
authors.forename: Midori
authors.initials: M
authors.lastname: Kobayashi
authors.forename: Satoe
authors.initials: S
authors.lastname: Fukui
authors.forename: Kayoko
authors.initials: K
authors.lastname: Fukuoka
authors.forename: Osamu
authors.initials: O
authors.lastname: Kawakami
authors.forename: Junji
authors.initials: J
authors.lastname: Yamaguchi
authors.forename: Masahiro
authors.initials: M
authors.lastname: Ohshima
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Mitsui
mesh_terms: D004790:Enzyme Induction / Q000187:drug effects; D005875:Gibberellins / Q000494:pharmacology; D012275:Oryza / Q000166:cytology / Q000187:drug effects* / Q000201:enzymology*; D012639:Seeds / Q000166:cytology / Q000187:drug effects / Q000201:enzymology; D013464:Sulfuric Acids / Q000494:pharmacology*; D000516:alpha-Amylases / Q000096:biosynthesis*
chemical_list: D005875:Gibberellins; D013464:Sulfuric Acids; C007842:gibberellic acid; D000516:alpha-Amylases; C033158:sulfuric acid