Characterization of carotenoid acyl este rs produced in drought-stressed barley seedlings

Drought-stressed barley seedlings have been adopted as a model system in which to examine the biochemistry of senescence. Unwatered barley seedlings develop yellow patches on their leaves after about 5 days. Analyses of the pigment composition by reversed-phase HPLC revealed significantly decreased...

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Bibliographic Details
Published inPhytochemistry (Oxford) Vol. 31; no. 9; pp. 3163 - 3168
Main Authors Barry, Paul, Evershed, Richard P., Young, Andrew, Prescott, Mark C., Britton, George
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.1992
Subjects
barley
carotenoid fatty acyl esters
Gramineae
Hordeum vulgare
leaves
carotenoid fatty acyl esters
barley
Hordeum vulgare
leaves
Gramineae
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Summary:Drought-stressed barley seedlings have been adopted as a model system in which to examine the biochemistry of senescence. Unwatered barley seedlings develop yellow patches on their leaves after about 5 days. Analyses of the pigment composition by reversed-phase HPLC revealed significantly decreased chlorophyll content relative to the carotenoid pigments. Among the carotenoids appeared significant amounts of apolar compounds, xanthophyll esters, that are not normally found in light-grown, green tissue of barley. Mass spectrometric analysis, partial synthesis and co-chromatography on reversed-phase HPLC confirmed that the main carotenoid ester was lutein bis-linolenate.
ISSN:0031-9422
1873-3700
DOI:10.1016/0031-9422(92)83467-D