Polymorphism in rice amylases at an early stage of seed germination.
A polymorphism in rice amylases at an early stage of seed germination is analyzed by zymogram. In non-glutinous cultivars of rice, alpha-amylase isozymes are mainly confirmed in germinating seeds. However, in glutinous cultivars, beta-amylase isozymes, which are not confirmed in nonglutinous cultivars, make up the major part of the total amylase activity and the expression of alpha-amylases are repressed.
Mitsunaga
S
S
Department of Life and Health Science, Joetsu University of Education, Niigata, Japan. mitunaga@juen.ac.jp
Kawakami
O
O
Numata
T
T
Yamaguchi
J
J
Fukui
K
K
Mitsui
T
T
D018525:Germination; D007527:Isoenzymes / Q000378:metabolism; D012275:Oryza / Q000201:enzymology* / Q000254:growth & development; D011110:Polymorphism, Genetic; D012639:Seeds / Q000254:growth & development; D013997:Time Factors; D000516:alpha-Amylases / Q000378:metabolism*; D001614:beta-Amylase / Q000378:metabolism*
D007527:Isoenzymes; D000516:alpha-Amylases; D001614:beta-Amylase