Polymorphism in Rice Amylases at an Early Stage of Seed Germination

Shin-ichiro MITSUNAGA; Osamu KAWAKAMI; Tomoyo NUMATA; Junji YAMAGUCHI; Kiichi FUKUI; Toshiaki MITSUI

doi:10.1271/bbb.65.662

Bioscience, Biotechnology, and Biochemistry

Online ISSN : 1347-6947
Print ISSN : 0916-8451

Biochemistry & Molecular Biology

Polymorphism in Rice Amylases at an Early Stage of Seed Germination

Shin-ichiro MITSUNAGA, Osamu KAWAKAMI, Tomoyo NUMATA, Junji YAMAGUCHI, Kiichi FUKUI, Toshiaki MITSUI

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Keywords: rice, α-amylase, β-amylase, zymogram

JOURNAL FREE ACCESS

2001 Volume 65 Issue 3 Pages 662-665

DOI https://doi.org/10.1271/bbb.65.662

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Abstract

A polymorphism in rice amylases at an early stage of seed germination is analyzed by zymogram. In nonglutinous cultivars of rice, α-amylase isozymes are mainly confirmed in germinating seeds. However, in glutinous cultivars, β-amylase isozymes, which are not confirmed in nonglutinous cultivars, make up the major part of the total amylase activity and the expression of α-amylases are repressed.

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