Participation and Properties of Lipoxygenase and Hydroperoxide Lyase in Volatile C_6-Aldehyde Formation from C_<18>-Unsatuated Fatty Acids in Isolated Tea Chloroplasts
スポンサーリンク
概要
- 論文の詳細を見る
Isolated tea chloroplasts utilized linoleic acid, linoleic acid and their 13-hydroperoxides as substrates for volatile C_6-aldehyde formation. Optimal pH values for oxygen uptake, hydroperoxide lyase and the overall reaction from C_<18>-fatty acids to C_6-aldehydes were 6.3, 7.0 and 6.3, respectively. Methyl linoleate, linoleyl alcohol and γ-linoleic acid were poor substrates for the overall reaction, but linoleic and linolenic acids were good substrates. The 13-hydroperoxides of the above fatty acids and alcohol also showed substrate specificity similar to that of fatty acids. Oxygen uptakes (relative V_<max>) with methyl linoleate, linoleyl alcohol, linoleic acid, γ-linolenic acid and arachidonic acid were comparable to or higher than that with linoleic acid. In winter leaves, the activity for C_6-aldehyde formation from C_<18>-fatty acids was reduced to almost zero. This was due to the reduction in oxygenation. The findings presented here provide evidence for the involvement of lipoxygenase and hydroperoxide lyase in C_6-aldehyde formation in isolated chloroplasts.
- 日本植物生理学会の論文
著者
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IMOTO Masaya
Department of Applied Chemistry, Faculty of Science and Technology, Keio University
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KAJIWARA Tadahiko
Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University
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HATANAKA Akikazu
Department of Agricultural Chemistry Faculty of Agriculture, Yamaguchi University
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SEKIYA Jiro
Department of Agricultural Chemistry Faculty of Agriculture, Yamaguchi University
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Sekiya Jiro
Div. Appli. Life. Sci. Grad. Sch. Agr. Kyoto Univ.
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Sekiya J
Department Of Agricultural Sciences Faculty Of Agriculture Okayama University:(present Address) Depa
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Sekiya Jiro
Div. Of Applied Life Sciences Graduate School Of Agriculture Kyoto Univ.
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Hatanaka Akikazu
Department Of Life Science Graduate School Of Integrated Arts And Science University Of East Asia
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Hatanaka Akikazu
Department Of Agricultural Chemistry Faculty Of Agriculture University Of Yamaguchi
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Imoto Masaya
Department Of Agricultural Chemistry Faculty Of Agriculture Yamaguchi University
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Sekiya Jiro
Department Of Agricultural Chemistry Faculty Of Agriculture Kyoto University
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Inouye Satoshi
Department of Agricultural Chemistry, Faculty of Agriculture, Yamaguchi University
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Inouye Satoshi
Department Of Agricultural Chemistry Faculty Of Agriculture Yamaguchi University
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Kajiwara Tadahiko
Department Of Agricultural Chemistry Faculty Of Agriculture Yamaguchi University
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Kajiwara Tadahiko
Department Of Agricultural Chemistry Faculty Of Agriculture University Of Yamaguchi
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