Characterization of Endogenous Gibberellins in Dwarf Rice Mutants

Ichiro HONDA; Kazuhisa SUDO; Shinya IWASAKI; Tadashi YANAGISAWA; Isomaro YAMAGUCHI; Hiroshi KATO; Ryoichi IKEDA; Hideo HIRASAWA; Nobutaka TAKAHASHI

doi:10.1271/bbb.60.2073

Ichiro HONDA, Kazuhisa SUDO, Shinya IWASAKI, Tadashi YANAGISAWA, Isomaro YAMAGUCHI, Hiroshi KATO, Ryoichi IKEDA, Hideo HIRASAWA, Nobutaka TAKAHASHI

Author information

Ichiro HONDA
Kazuhisa SUDO
Shinya IWASAKI
Tadashi YANAGISAWA
Isomaro YAMAGUCHI
Hiroshi KATO
Ryoichi IKEDA
Hideo HIRASAWA
Nobutaka TAKAHASHI
Author's Organization：
Department of Applied Biochemistry, Utsunomiya University:National Agriculture Research Center Ministry of Agriculture, Forestry, and Fisheries
Department of Applied Biochemistry, Utsunomiya University
Department of Applied Biochemistry, Utsunomiya University
Department of Applied Biochemistry, Utsunomiya University
Department of Applied Biological Chemistry, The University of Tokyo
National Agriculture Research Center, Ministry of Agriculture, Forestry, and Fisheries
National Agriculture Research Center, Ministry of Agriculture, Forestry, and Fisheries
National Agriculture Research Center, Ministry of Agriculture, Forestry, and Fisheries
Frontier Research Program, The Institute of Physical and Chemical Research (RIKEN)

Keywords: dwarf, Oryza sativa, gibberellin, Shiokari, GC-MS

JOURNAL FREE ACCESS

1996 Volume 60 Issue 12 Pages 2073-2075

DOI https://doi.org/10.1271/bbb.60.2073

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Abstract

The elongation response of 17 near-isogenic dwarf lines of the Shiokari rice cultivar to gibberellins (GAs) was examined. Two strains, ID-18h and ID-19, were selected for further analysis of their endogenous GA levels. It is suggested that ID-18h dwarfism is caused by the deficiency of GA 3β-hydroxylation activity, and ID-19 dwarfism by the insensitivity of the elongation response to physiologically active GAs.

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