Ionones and β-Ionylideneacetic Acids: Their Influence on Abscisic Acid Biosynthesis by Cercospora rosicola

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概要

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• Several ionones and β-ionylideneacetic acids inhibited absicisic acid (ABA) biosynthesis in Cercospora rosicola at 100 μM. At lower concentrations, α-ionone, 1, 2-dihydroxy-1, 2-dihydro-β-ionone and 4-keto-α-ionone enhanced ABA biosynthesis. Conversions of ionones by C. rosicola were identified by GC-MS as: α-ionone to 4-keto-α-ionone, 4-keto-α-ionol and dehydrovomifoliol; and 1-hydroxy-α-ionone to dehydrovomifoliol. The oxidations of α-ionone and its analogs parallel those of the α-ionylideneacetic acids. The β-ionylideneacetic acids were generally oxidized to more polar forms. Metabolites identified by GC-MS were 3-hydroxy-, 3-keto- and 1, 2-epoxy-1, 2-dihydro-β-ionylideneacetic acids. The fungus rapidly metabolized most exogenous materials to more polar forms.

• 社団法人 日本農芸化学会の論文

著者

• NELSON Mary

  USDA, ARS, Fruit and Vegetable Chemistry Laboratory

• MAIER V.

  USDA, ARS, Fruit and Vegetable Chemistry Laboratory

• NORMAN Shirley

  USDA, ARS, Fruit and Vegetable Chemistry Laboratory

• POLING Stephen

  USDA, ARS, Fruit and Vegetable Chemistry Laboratory

関連論文

• Ionones and β-Ionylideneacetic Acids: Their Influence on Abscisic Acid Biosynthesis by Cercospora rosicola

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