Showing papers in "Phytochemistry in 1974"

TL;DR: In this paper, the pigment content increased linearly with time after a lag phase when callus tissues were grown on culture medium containing IAA in the dark, whereas it markedly decreased when 2,4-D was substituted for IAA or when cultures were irradiated with blue light.

TL;DR: The carotenoids of the photosynthetic dinofiagellates Amphidinium carterae (two strains), Glenodinium sp., Gymnodiniam splendens, G. nelsoni and Gyrodinium dorsum have been investigated, quantitatively and qualitatively as mentioned in this paper.

TL;DR: The enzyme, which has been purified 600 ×, shows an absolute specificity for the cinnamyl moiety and the distribution of this activity throughout a wide variety of taxonomically different plant groups as well as plant parts has revealed a possible correlation with lignin biosynthesis.

TL;DR: The significance of tomatine to plants which elaborate it is discussed and some possible uses of the compound are mentioned.

TL;DR: Germinating seeds of lucerne, guar, carob and soybean initially depleted raffinose series oligosaccharides and then galactomannan, accompanied by a rapid increase and then a decrease in α-galactosidase levels.

TL;DR: In this paper, an in vitro system for the breakdown of starch granules by mixtures of α- and β-amylase is developed and discussed with reference to information concerning the degradation of starch in vivo.

TL;DR: Bromophenols were detected in species from the families Ceramiaceae, Delesseriaceae, Bonnemaisoniaceae, Rhodophyllaceae, Corallinaceae and Rhodomelaceae, and lanosol was identified in sea water from the Polysiphonia Brodiaei —zone.

TL;DR: It is concluded that sucrose synthesis in pea shoots and spinach leaves occurs mainly, in the cytoplasm.

TL;DR: The callus tissues from 11 representative species of the Papaveraceae and the redifferentiated plantlets from four species were successfully derived and maintained and the alkaloid pattern in the plantlets was examined in comparison with those of the original plants.

TL;DR: In this article, β-Galactosidase activity has been identified in soluble and cell wall preparations from apple cortex tissue, which has a pH optimum of 4·0 with p-nitrophenyl-β, d -galactopyranoside as substrate.

TL;DR: Abscisic acid (ABA) is synthesized from labelled mevalonate by a preparation of lysed chloroplasts isolated from ripening avocado fruit by a number of cofactors required.

TL;DR: The principal sterol of the marine diatom tricornutum was identified as (24S)-24-methylcholesta-5,22E-dien-3β-ol as discussed by the authors.

TL;DR: The results clearly demonstrate that six species of mosses and liverworts investigated for the presence of lignin by oxidative degradation are devoid of ligrin but contain other types of phenolic cell wall material.

TL;DR: Putrescine content may be a useful guide to the mineral status of legumes, since accumulation of this amine may be detected before deficiency symptoms appear.

TL;DR: The marine siphonous green alga, Codium fragile, was shown to contain two 25-methylene sterols, which were identified as (24 S )-24-ethylcholesta-5,25-dien-3β-ol and the previously unknown (24S )- 24-methylcholeste- 5, 25-diens-3 β-ol for which the trivial name codisterol is proposed.

TL;DR: Aspartate kinase and two homoserine dehydrogenases were partially purified from 4-day-old pea seedlings and the activity of both peaks was inhibition by aspartate and cysteine and one was inhibited by threonine.

TL;DR: Wax on leaves of rye and of hexaploid Triticale (60-70-day-old plants) contains hydrocarbons (6-8), esters (10%), free alcohols (14-8%), free acids (3%), hentriacontane-14,16-dione (39-45%), 25 (S)-hydroxyhexacosanol (S-H-decane), 14,16dione and unidentified (14,15%) as mentioned in this paper.

TL;DR: The structures of sericic acid and sericoside, the major constituents of the roots of Terminalia sericea, have been determined as discussed by the authors, and they are 2α,3β,19α,24-tetrahydroxy-olean-12-en-28-oic acid, and their corresponding C -28 D -glucosyl ester.

TL;DR: From a quantitative standpoint, wheat albumins that inhibit trypsin are negligible, whereas about 2/3 of the total albumin inhibits amylases from different origins, unlike α-amylase inhibitors that were all anodic.

TL;DR: A 50- and 100-fold increase in the o -diphenolase activity was observed respectively in excised coleoptiles and roots of wheat seedlings after germination for 4–5 days, associated with the appearance of several new multiple forms of o-dipenolase on acrylamide gels.

TL;DR: An earlier phytochemical survey of the flavonoid content of heartwoods and barks of Acacia species is extended to a much wider range distributed throughout the Australian continent, and representing most sections and subsections of the genus.

TL;DR: In this paper, cellular aggregates in Datura innoxia suspension cultures give rise to large numbers of shoots when such aggregates are cultured in the light on an auxin-free agar medium supplemented with kinetin.

TL;DR: In this paper, azetidine-2-carboxylic acid has been isolated from seeds of Fagus silvatica L. (beechnuts) and its structures have been established by PMR- and 13C-NMR-spectroscopy and by synthesis from l -azetidine 2-CARBOYCLIC acid.

TL;DR: Photosynthesis experiments with 14 CO 2 established that of 16 Droseraceae species tested Drosophylum lusitanicum incorporated the highest amount of label into plumbagin (2-methyl-5-hydroxy-1,4-naphthoquinone), and it was established that plumberagin and the closely related 7-methyljuglone are biosynthesized via the acetate-polymalonate pathway.

TL;DR: GA12-aldehyde obtained from mevalonate via ent-kaurene, ent-kasurenol,Ent-kaurenol and ent-7α-hydroxykaurenoic acid in a cell-free system from immature seeds of Cucurbita maxima was converted to GA12 by the same system.

TL;DR: A novel enzyme system glutamine: 2-oxoglutarate aminotransferase oxidoreductase, which probably has an important role in ammonia assimilation has been detected in the rhizobial fraction of soybean root nodules and in Rhizobium japonicum grown in culture.

TL;DR: It is concluded that this Mutant B1-41a, obtained by UV-irradiation of Gibberella fujikuroi strain GF-1a, does not metabolise mevalonic acid lactone (MVL), ent -kaur-16-ene, ent -kaurenol, and ent-kaurenal to gibberellins.

TL;DR: In this paper, extracts of 21 bean cultivars were screened for hemagglutinating specifity and mitogenic activity and four types of mitogens were distinguished in different beans, two of which are mitogens.

TL;DR: Roseoside, a C13 glycoside isolated from Vinca rosea has been assigned the structure and stereochemistry (1) as discussed by the authors, and the structure of Roseoside has been described in detail.