Abstract
The biochemical composition of Zygophyllum dumosum Boiss (Zygophyllaceae) was analyzed in petioles collected in the summer and winter from plants growing in a natural ecosystem on a southeast-facing slope of the Negev desert. UPLC-QTOF MS based analysis identified season specific sulfur containing phenylpropanoids unreported in plants. Sulfuric-caffeic and -ferulic acid derivatives and isorhamnetin 3-O-(4-sulfate-rutinoside) were measured to accumulate specifically in the summer. The reported identification and accumulation of sulfate containing metabolites during the hot and dry summer can be related to the putative protective role reported for these compounds.
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