Journal ArticleDOI
Flavonoid variation in the genus briza
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TLDR
In Briza media and the South American species, ploidy level is shown to play a large part in flavonoid variation, whereas tetraploids accumulate orientin and iso-orientin, autotetraploidy having apparently upset regulatory genes in the formation of the flavone C -glycosides.About:
This article is published in Phytochemistry.The article was published on 1972-08-01. It has received 32 citations till now. The article focuses on the topics: Briza & Briza media.read more
Citations
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Journal ArticleDOI
Characterization of C-glycosyl flavones O-glycosylated by liquid chromatography-tandem mass spectrometry.
Federico Ferreres,Angel Gil-Izquierdo,Paula B. Andrade,Patrícia Valentão,Francisco A. Tomás-Barberán +4 more
TL;DR: The study of the relative abundance of the main ions from the MS preferential fragmentation on -MS2 and/or -MS3 events allows the differentiation of the position of the O-glycosylation, either on phenolic hydroxyl or on the sugar moiety of C-gly cosylation.
Journal ArticleDOI
Flavonoids and the evolution of the angiosperms
TL;DR: Data on the distribution of flavonoids in the angiosperms are summarized and patterns of occurence are shown to be related to plant evolution and the importance of these various distribution patterns is considered in relation to an ecological function for these flavonoid types.
Journal ArticleDOI
Flavonoid patterns in leaves of the gramineae
TL;DR: In a leaf survey of 274 species from 121 genera of the Gramineae, flavone C-glycosides and tricin were found to be the major flavonoids in 93% of the samples, by contrast, apigenin and luteolin O- Glycosides were comparatively rare, as were the flavonols, kaempferol and quercetin.
Book ChapterDOI
The Biochemical Systematics of Flavonoids
TL;DR: One of the very first examples of a significant correlation between chemistry and taxonomy was the discovery of a relationship between sectional classification and flavonoid heartwood constituents in the genus Pinus.
Journal ArticleDOI
Molecular phylogenetics of cool-season grasses in the subtribes Agrostidinae, Anthoxanthinae, Aveninae, Brizinae, Calothecinae, Koeleriinae and Phalaridinae (Poaceae, Pooideae, Poeae, Poeae chloroplast group 1).
Jeffery M. Saarela,Roger D. Bull,Michel J. Paradis,Sharon N. Ebata,Paul M. Peterson,Robert J. Soreng,Beata Paszko +6 more
TL;DR: Deep branches in the combined plastid and combined ITS+ETS trees are generally well resolved, the trees are congruent in most aspects, branch support across the trees is stronger than in trees based on only ITS and fewer plastID regions, and there is evidence of conflict between data partitions in some taxa.
References
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Book ChapterDOI
Cytogenetics of the Tomato
TL;DR: This review is concerned with the genetics and cytology of the tomato, lycopersicon esculentum, a widely cultivated annual species of the Solanaceae.
Journal ArticleDOI
Plant polyphenols—XII.
Jeffrey B. Harborne,E. Hall +1 more
TL;DR: The major phenolic constituents of grasses are glycoflavones and eight, present in Avena and Triticum , have been studied in detail; one is saponarin, another lutonaretin and the remainder are apigenin or luteolin derivatives having carbon-carbon linked sugars, which differ from those of vitexin and saponaretin.
Journal ArticleDOI
Chromosome numbers in 28 grass genera from south america
Wray M. Bowden,Harold A. Senn +1 more
TL;DR: The somatic (2n) chromosome numbers of more than 70 species of 28 genera of grasses from Bolivia, Argentina, Chile, and Uruguay are recorded.
Journal ArticleDOI
C-glycosides of the leaves of parkinsonia aculeata
TL;DR: The leaves of Parkinsonia aculeata have been found to contain three C-glycosides as mentioned in this paper, which can be separated by fractional crystallization after preliminary lead salt purification, but preparative paper chromatography was found effective for the separation of all three.
Journal ArticleDOI
Plant polyphenols—XVI.
H.M. Hurst,Jeffrey B. Harborne +1 more
TL;DR: A range of known flavonoids have been reductively cleaved with alkali and sodium amalgam under nitrogen and the phenols, phenolic alcohols and phenolic acids produced were separated and identified by chromatography on thin layers of silica gel and of microcrystalline cellulose as discussed by the authors.