Allelopathic activity of luteolin 7-O-β-glucuronide isolated from Chrysanthemum morifolium L.
TL;DR: In this paper, two flavones, luteolin 7- O -β-glucuronide and diosmetin 7-O -β -glucuride, were isolated and identified from Chrysanthemum morifolium L. v. Ramat leaves.
About: This article is published in Biochemical Systematics and Ecology.The article was published on 2005-02-01. It has received 54 citations till now. The article focuses on the topics: Diosmetin & Luteolin.
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TL;DR: The biosynthesis of flavones in plants was found to be catalyzed by two completely different flavone synthase proteins (FNS), a unique feature within the flavonoids, which makes these compounds valuable targets for drug design, including recombinant DNA approaches.
483 citations
TL;DR: A better understanding of the soil persistence of phenoxaz inones, of the weed resistance against benzoxazinoids, and of how allelopathic interactions are influenced by cultural practices, would provide the means to include allelopathy rye varieties in organic cropping systems for weed control.
Abstract: The allelopathic potency of rye (Secale cereale L.) is due mainly to the presence of phytotoxic benzoxazinones—compounds whose biosynthesis is developmentally regulated, with the highest accumulation in young tissue and a dependency on cultivar and environmental influences. Benzoxazinones can be released from residues of greenhouse-grown rye at levels between 12 and 20 kg/ha, with lower amounts exuded by living plants. In soil, benzoxazinones are subject to a cascade of transformation reactions, and levels in the range 0.5–5 kg/ha have been reported. Starting with the accumulation of less toxic benzoxazolinones, the transformation reactions in soil primarily lead to the production of phenoxazinones, acetamides, and malonamic acids. These reactions are associated with microbial activity in the soil. In addition to benzoxazinones, benzoxazolin-2(3H)-one (BOA) has been investigated for phytotoxic effects in weeds and crops. Exposure to BOA affects transcriptome, proteome, and metabolome patterns of the seedlings, inhibits germination and growth, and can induce death of sensitive species. Differences in the sensitivity of cultivars and ecotypes are due to different species-dependent strategies that have evolved to cope with BOA. These strategies include the rapid activation of detoxification reactions and extrusion of detoxified compounds. In contrast to sensitive ecotypes, tolerant ecotypes are less affected by exposure to BOA. Like the original compounds BOA and MBOA, all exuded detoxification products are converted to phenoxazinones, which can be degraded by several specialized fungi via the Fenton reaction. Because of their selectivity, specific activity, and presumably limited persistence in the soil, benzoxazinoids or rye residues are suitable means for weed control. In fact, rye is one of the best cool season cover crops and widely used because of its excellent weed suppressive potential. Breeding of benzoxazinoid resistant crops and of rye with high benzoxazinoid contents, as well as a better understanding of the soil persistence of phenoxazinones, of the weed resistance against benzoxazinoids, and of how allelopathic interactions are influenced by cultural practices, would provide the means to include allelopathic rye varieties in organic cropping systems for weed control.
151 citations
Cites background from "Allelopathic activity of luteolin 7..."
...Allelopathic effects of luteoline glucuronides and ferulic acid have been described by Booker et al. (1992) and Beninger and Hall (2005), but these compounds are less toxic thanDIBOA and BOA....
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TL;DR: This review contains an overview of pharmacological activities, isolation techniques and analytical techniques for diosmetin, found in herbal medicines and plays an important role in the treatment of various ailments.
Abstract: Plants have been used as a source for food material and natural remedies for the treatment of vast range of diseases. Nature provides us remedies for the treatment of various types of disorders ranging from simple ailments to complicated diseases. Plants are known to possess different pharmacological activities due to the presence of various phytoconstituents. Flavonoids are one of the main active phytoconstituents found in fruits, vegetables, wines, tea and cocoa. Flavonoids exhibit various pharmacological activities such as antioxidant, anti-inflammatory, anti-allergic, antibacterial, oestrogenic, cytotoxic antitumoural, hepatoprotective, antithrombotic and antiviral activity. Diosmetin (3′, 5, 7-trihydroxy-4′-methoxyflavone), the aglycone part of the flavonoid glycosides diosmin occurs naturally in citrus fruit. Although it is found in herbal medicines and plays an important role in the treatment of various ailments, only limited scientific researches have been conducted. The aim of this review is to collect all available scientific literature published on diosmetin and combine it into this paper. This review contains an overview of pharmacological activities, isolation techniques and analytical techniques for diosmetin. Thus, valuable information provided in the present review will help researchers in developing alternative methods for the treatment of diseases from diosmetin.
127 citations
TL;DR: This review will be beneficial to researches for the development of an alternative method for the treatment of innumerable diseases from diosgenin, a steroidal sapogenin found in plants such as Dioscorea nipponoca and Trigonella.
Abstract: Diosgenin is a steroidal sapogenin found in plants such as Dioscorea nipponoca, Solanum incanum, Solanum xanthocarpum and Trigonella foenum graecum. Diosgenin, biologically active phytochemicals have been used for the treatment of various types of disorder such as leukemia, inflammation, hypercholesterolemia and cancer. It is also able to prevent bone loss to the same extent as that of oestrogen. It is a typical initial intermediate for synthesis of steroidal compounds, oral contraceptives and sex hormones. Dioscorea, Costus and Trigonella are mainly used for the production of diosgenin. On the basis of literature survey it divulges that diosgenin has very impressive pharmacological profile and could be used as a medicine for the treatment of different types of disorders in the future. Thus, the present work aims to provide collective information in concern with its pharmacological activity and phytoanalytical techniques. This review will be beneficial to researches for the development of an alternative method for the treatment of innumerable diseases from diosgenin.
117 citations
01 Jan 2006
84 citations
References
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TL;DR: In this paper, the extinction coefficients for chlorophylls a and b in diethylether (Smith, J.H. and Benitez, A.V., eds.), used in this paper as primary standards, were verified by magnesium determination using atomic absorbance spectrophotometry.
5,326 citations
TL;DR: Some of the recent advances in flavonoid research are reviewed and the role of anthocyanins and flavones in providing stable blue flower colours in the angiosperms is outlined.
3,465 citations
Book•
01 Jan 1988
TL;DR: In this paper, the authors discuss the distribution and evolution of the Flavonoids in the Lower Plants and its evolution in the Dicotyledons of the world's plants.
Abstract: 1 The Anthocyanins.- 2 Flavans and Proanthocyanidins.- 3 C-Glycosylflavonoids.- 4 Biflavonoids.- 5 Isoflavonoids.- 6 Neoflavonoids.- 7 Flavones and Flavonols.- 8 Flavone and Flavonol Glycosides.- 9 The Minor Flavonoids.- 10 Miscellaneous Flavonoids.- 11 Biosynthesis.- 12 Distribution of Flavonoids in the Lower Plants and Its Evolutionary Significance.- 13 Distribution and Evolution of the Flavonoids in Gymnosperms.- 14 Flavonoids and Evolution in the Dicotyledons.- 15 Distribution and Evolution of Flavonoids in the Monocotyledons.- 16 Flavonoids and Flower Colour.- Plant Species Index.
2,185 citations
Book•
09 Dec 1993
TL;DR: The anthocyanins. 1H NMR spectroscopy of flavonoids and their glycosides as discussed by the authors, and the major and minor flavonoid glycoside.
Abstract: The anthocyanins. Flavans and proanthocyanidins. C-Glycosyl flavonoids. Biflavonoids and triflavonoids. Isoflavonoids. Neoflavonoids. Flavones and flavanols. Flavone and flavonol glycosides. The minor flavonoids. 1H NMR spectroscopy of flavonoids and their glycosides. Biosynthesis of flavonoids. Genetics of flavonoids. Flavonoids and flower colour. Flavonoids and insects. The impact of plant flavonoids on mammalian biology: implications for immunity, inflammation and cancer.
1,547 citations