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2.
D. K. Dougall 《Plant Cell, Tissue and Organ Culture》1989,18(1):105-112
Approximately half of the subclones examined from one clone of the wild carrot cell culture WC63-1-9-1 accumulated dihydroquercetin in the culture medium. The amount of dihydroquercetin accumulated in the medium varied with the subclone used, the size of the inoculum, the medium used and the time of sampling.Dedicated to Dr. Friedrich Constabel on the occasion of his 60th birthday 相似文献
3.
David M. Byers Harold W. Cook Frederick B. St. C. Palmer Matthew W. Spence 《Neurochemical research》1989,14(6):503-509
Distinct sets of cellular proteins were labeled with [3H]myristic and [3H]palmitic acids in primary (rat neurons and astroglia) and continuous (murine N1E-115 neuroblastoma and rat C6 glioma) cell cultures derived from the nervous system. Both soluble and membrane proteins were modified by myristate in a hydroxylamine-stable (amide) linkage, while palmitoylated proteins were esterlinked and almost exclusively membrane bound. Chain elongation of both labeled fatty acids prior to acylation was observed, but no protein amide-liked [3H]myristate originating from [3H]palmitate was detected. Fatty acylation profiles differed considerably among most of the cell lines, except for rat astroglial and glioma cells in which myristoylated proteins appeared to be almost identical based on SDS gel electrophoresis. An unidentified 47 kDa myristoylated protein was labeled to a significantly greater extent in astroglial than in glioma cells; the expression of this protein could be related to transformation or development in cells of glial origin. 相似文献
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A. Ulubelen S. Öksüz B. Halfon Y. Aynehchi T.J. Mabry S.A. Matlin 《Phytochemistry》1984,23(12):2941-2943
Haplophyllum pedicellatum, H. robustum and H. glabrinum all yielded the known compound gossypetin 8,3′-dimethyl ether 3-rutinoside. In addition the first two species afforded isorhamnetin and its 3-rutinoside. A new glycoside, gossypetin 8,3′-dimethyl ether 3-glucoside was obtained from H. pedicellatum together with the 3-malonylrutinoside, 3-malonylglucoside and 3-galactoside of isorhamnetin plus kaempferol 3-malonylglucoside. H. robustum yielded isorhamnetin 7-glucoside and 3-glucoside and quercetin 3-galactoside, while H. glabrinum was found to contain gossypetin 8-methyl ether 3-malonylrutinoside in addition to kaempferol and isorhamnetin 3-glucoside. 相似文献
6.
In petals of Silene dioica, gene P controls the 3′-hydroxylation of the anthocyanin B-ring and the hydroxylation pattern of the hydroxycinnamoyl acyl group bound to the 4″'-hydroxyl group of rhamnose of anthocyanidin 3-rhamnosyl(1→6)glucoside-5-glucoside. In this paper, experiments are presented which show that gene P is involved in the hydroxylation of p-coumaroyl-CoA to caffeoyl-CoA, which is then used both as a precursor in anthocyanin biosynthesis and as a substrate for the final acylation. 相似文献
7.
Abstract. A brief high temperature treatment (45 C) promoted anthocyanin synthesis in 2-d-old dark-grown red cabbage seedlings. The increased effectiveness of a temperature/red light treatment as opposed to the reverse sequence suggests that an elevated temperature 'induces' some component which facilitates the phytochrome response. 相似文献
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The promotion of anthocyanin synthesis in red-cabbage seedlings by 5 min exposure to R light is inhibited by subsequent application of CaCl2. The stimulation of dark synthesis of anthocyanin by n-PrOH and by kinetin is also reduced by Ca2+ and by cholesterol, both of which are well known to stabilize cell membranes. By contrast, EDTA, which chelates Ca2+, promotes dark synthesis of anthocyanin. Assay of native Ca2+ extractable from seedlings immersed in EDTA demonstrates that R light exposure promotes a highly significant increase in extractable Ca2+. It is suggested that the molecular configuration of the phytochrome molecule affects the ability of a membrane to bind Ca2+ and that this in turn affects the permeability to substrates which are required for anthocyanin biosynthesis. 相似文献
10.
The anthochlor complement of Coreopsis mutica has been determined. The compounds observed were all glycosidic derivatives of sulphuretin, being the mono- and di-glucosides and two new glucosidic derivatives acylated with caffeic acid. 相似文献