Expression of α-Amylase Isoforms and the RAmy1A Gene in Rice (Oryza sativa L.) during Seed Germination, and its Relationship with Coleoptile Length in Submerged Soil
スポンサーリンク
概要
- 論文の詳細を見る
A significant difference in the seed germinability was observed between the two rice cultivars, 'Nipponbare' and 'Suweon 287', under anoxia (i.e., during germination in submerged soil at 18℃), althouth little difference was seen under aerobic (in air) or hypoxic (in water) conditions. The number of α-amylase isoforms synthesized in germinating seeds was inversely proportional to the O_2 concentrations at the early gemination stage. The formation of isoform B was promoted by oxygen supply, while isoform H was undetectable if the seeds were unable to germinate. The activity of isoform H was highly correlated with the coleoptile length in the submerged soil at 18℃, indicating that isoform H is a critical factor for seed germination under anoxia. The expression of the rice α-amylase RAmy1A gene was repressed when the seeds germinated under hypoxia or anoxia. The interations between oxygen stress, gibberelin, and carbon metabolites on the expression of α-amylase in rice are discussed.
- 日本作物学会の論文
著者
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Yamaguchi Junji
Bioscience Center Nagoya Univ.
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Yamaguchi Junji
Division of Biological Sciences,Graduate School of Science,Hokkaido University
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TOYOFUKU Kyoko
Bioscience Center, Nagoya University
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Yamaguchi Junji
Biosci. Cent. & Grad. Sch. Bioagri. Sci. Nagoya Univ.
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Yamaguchi Junji
Bioscience Center And Graduate School Of Bioagricultural Scineces Nagoya University
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Yamaguchi Junji
Research Institute For Biochemical Regulation School Of Agricultural Sciences Nagoya University
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Huang Jirong
Graduate School Of Agricultural And Life Sciences The University Of Tokyo
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Toyofuku Kyoko
Bioscience Center Nagoya University
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Yamaguchi J
Division Of Biological Sciences Graduate School Of Science Hokkaido University
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Akita Shigemi
Graduate School of Agricultural and Life Sciences, The University of Tokyo
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Toyofuku Kyoko
Bioscience Center And Graduate School Of Bioagricultural Scineces Nagoya University
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Akita S
Univ. Tokyo Tokyo Jpn
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Akita Shigemi
Graduate School Of Agricultural And Life Science The University Of Tokyo
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