Abstract

AbstractDark‐grown barley seedlings which had been irradiated for 6 to 8 h have been shown to contain fatty acid esters of phytol. No such esters could be found in non‐irradiated seedlings. The fatty acids were saturated or had only one double bond. The most prominent acid was palmitic acid.Isolated etio‐chloroplasts from non‐irradiated and irradiated barley seedlings also contained phytylpyrophosphate. The ratio of free phytol to phytylpyrophosphate is only little changed when the seedlings are irradiated for 6 to 8 h. The chemical identifications of free phytol and the phytol derivatives are based upon combined gas chromatography/mass spectrometry.

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