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On the biogenesis of flavone O-glycosides and C-glycosides in the lemnaceae by J.W. Wallace; T.J. Mabry; R.E. Alston is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.
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14C-Labeled apigenin, luteolin, orientin, isoorientin, and isovitexin were obtained either directly or by hydrolyzing the glycosides obtained from Spirodela and Lemna species which had been cultured on media containing phenylalanine-l-l%. The 14Glabeled flavones were introduced into the growth media for S. polyrhizu, S. oligorhiza and L. minor plants. When the extracts from these plants were chromatographed and the two-dimensional chromatograms examined autoradiographically, radioactivity was detected in 0-glycosylated and 0-methylated flavones. However, radioactivity was not detected in flavones containing new C-glycosyl linkages. The data suggest that plants in the Lemnaceae O-substitute flavones but do not C-glycosylate them. Moreover, evidence was obtained that flavones containing a 4'-monohydroxy B-ring can be oxidized to flavones with a 3',4'-dihydroxy B-ring. None of the 14C-flavones was incorporated into any of the anthocyanins known to occur in the Lemnaceae. Isoorientin 3'-methylether and an O-/3-o-glucoside of chrysoeriol were detected for the first time as constituents of L. minor. ## 1 (a) A preliminary account of this work was previously reported:
Who reads On the biogenesis of flavone O-glycosides and C-glycosides in the lemnaceae?
It is typically read by researchers, students, and practitioners in Biochemistry, Genetics and Molecular Biology.
- Author
- J.W. Wallace; T.J. Mabry; R.E. Alston
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0031-9422)
- Published
- 1969
- Language
- EN
- Field
- Biochemistry, Genetics and Molecular Biology (Life Sciences)