RRC ID 36140
Author Hirayama C, Ono H, Meng Y, Shimada T, Daimon T.
Title Flavonoids from the cocoon of Rondotia menciana.
Journal Phytochemistry
Abstract Two flavonol glycosides along with four known flavonoids were isolated from the cocoon of the mulberry white caterpillar, Rondotia menciana (Lepidoptera: Bombycidae: Bombycinae), a closely related species of the domesticated silkworm Bombyx mori, both of which feed on leaves of mulberry (Morus alba). The two glycosides were characterized as quercetin 3-O-β-d-galactopyranosyl-(1→3)-β-d-galactopyranoside and kaempferol 3-O-β-d-galactopyranosyl-(1→3)-β-d-galactopyranoside, based on spectroscopic data and chemical evidence. The flavonol galactosides found in the cocoon were not present in the host plant, nor in the cocoon of the silkworm, B. mori. Notably, flavonol glucosides, which are the main constituents of cocoon flavonoids in B. mori mori, were not found in the R. menciana cocoon. The present result strongly suggests that R. menciana is quite unique in that they predominantly use an UDP-galactosyltransferase for conjugation of dietary flavonoids, whereas UDP-glucosyltransferases are generally used for conjugation of plant phenolics and xenobiotics in other insects.
Volume 94
Pages 108-12
Published 2013-10-1
DOI 10.1016/j.phytochem.2013.05.023
PII S0031-9422(13)00208-2
PMID 23830693
MeSH Animals Bombyx / chemistry Chromatography, High Pressure Liquid Flavonoids / analysis* Flavonoids / chemistry Flavonols / analysis Flavonols / chemistry Galactosyltransferases / metabolism Glucosides / analysis Glucosides / chemistry Glycosides / analysis* Glycosides / chemistry Host-Parasite Interactions Kaempferols / analysis Kaempferols / chemistry Lepidoptera / chemistry* Lepidoptera / physiology Molecular Structure Morus / chemistry* Morus / parasitology Plant Leaves / chemistry* Plant Leaves / parasitology Quercetin / analysis Quercetin / chemistry Spectrometry, Mass, Electrospray Ionization Uridine Diphosphate / metabolism
IF 3.044
Times Cited 12