Sterol composition of the phytolaccaceae and closely related families |
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Authors: | Shihua Xu Glenn W Patterson |
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Affiliation: | (1) Department of Botany, University of Maryland, 20742 College Park, MD |
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Abstract: | Total sterols were analyzed from 28 species of Phytolaccaceae and from 29 species of closely related families—Basellaceae,
Portulaccaceae, Molluginaceae, and Stegnospermataceae. Eighteen of twenty-eight species of Phytolaccaceae contained dominant
Δ7-sterols while six species had dominant Δ5-sterols. Three species had dominant Δ0-sterols. Sterol composition strongly reflected taxonomic position. Nineteen of twenty-nine species from Basellaceae, Portulaccaceae,
Molluginaceae, and Stegnospermataceae contained dominant Δ7-sterols while ten species contained dominant Δ5-sterols. Until recently Δ7-sterols were considered rare in higher plants. It appears that a large number of species in the order Caryophyllales contain
primarily Δ7-sterols. |
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