Exudate flavonoids in a tropical weed, Chromolaena odorata (L.) R. M. King et H. Robinson

Wollenweber, Eckhard; Dörr, Marion; Muniappan, R.

doi:10.1016/0305-1978(95)00080-1

Cited by 34 publications

(17 citation statements)

References 8 publications

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“…[15,16] reported that fresh leaves have been traditionally used in most tropical countries like Vietnam for the management of burn wounds, dentoalveolitis, soft tissue wounds, leech bite, and skin infection. There are confirmed reports that leaves and stems of C. odorata contain steroids, essential oils, flavonoids, and triterpenes [17]. The antagonistic activities of Trichoderma koningii against plant pathogenic fungi are welldocumented [18].…”

Section: Introductionmentioning

confidence: 94%

Preventive and curative control of sclerotium rot disease of cocoyam cormel (Colocasia esculenta [L., Scott]) using plant extracts and Trichoderma koningii

Bartholomew¹,

Emylia²,

Chibuzor³

2017

J App Biol Biotech

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Aqueous leaf extracts from air-dried samples of Carica papaya, Chromolaena odorata, and Azadirachta indica were screened for antifungal properties against Sclerotium rolfsii at 50, 70, and 100% concentrations and Trichoderma koningii (4.9 × 10 6 spores/ml) in vivo. Dithane M45 at 2% concentration was used as positive control for better comparison. The aqueous extracts and T. koningii were applied as preventive and curative methods by spraying fresh and healthy cormels with S. rolfsii (3.75 × 10 5 spores/ml). The results showed that Mancozeb and T. koningii had significant effect (preventive and curative) on disease severity and percentage weight loss. Furthermore, preventive and curative application of T. koningii significantly reduced disease severity. C. papaya at 50% concentration (preventive method) had the highest disease severity (3.8%), as to the control (4.0%). The extracts and dithane M45 were more effective as curative, while T. koningii was better as preventive method. The result on percentage weight loss showed that C. odorata (70% concentration) had the highest (49.61%), followed by C. papaya (50%) with 47.85%, and the least was A. indica (23.77%) at 70%. C. odorata and A. indica 50% and 100% concentrations, respectively, significantly reduced weight loss, while C. odorata (100% concentration) and the control gave the highest percentage weight loss in the curative method. Conclusively, plant extracts and T. koningii were more effective in controlling the disease and reduction in weight loss than mancozeb.

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Section: Introductionmentioning

confidence: 94%

Preventive and curative control of sclerotium rot disease of cocoyam cormel (Colocasia esculenta [L., Scott]) using plant extracts and Trichoderma koningii

Bartholomew¹,

Emylia²,

Chibuzor³

2017

J App Biol Biotech

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“…Structural features include B-ring deoxy flavonoids, oxygenation at C-8 and, more prevalently at C-6, and a high level of O-methylation. The reader can get a good idea of the flavonoid richness of the species by consulting Wollenweber et al (1995a) who were interested in the exudate chemistry of this weedy species in relationship to its interaction with the possible biological control agent Pareuchaetes pseudoinsulata. They reported a series of common mono-and dimethyl ethers of kaempferol and quercetin along with acacetin and quercetagetin 6,4'-dimethyl ether (laciniatin).…”

Section: Flavonoids Of Eupatorieaementioning

confidence: 99%

Flavonoids of the Sunflower Family (Asteraceae)

Bohm

Stuessy

2001

120

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This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machines or similar means, and storage in data banks. This book is dedicated to:Arthur Cronquist Outstanding plant systematist and major contributor to understanding taxonomic relationships within Asteraceae and Ralph E. Alston (1925Alston ( -1967) Visionary natural products chemist and geneticist who pioneered the use of chemical data in studies of plant systematics and evolution PrefaceCertainly many of the readers of this book will remember the early developments of chemosystematics in the late 1950s. We ourselves remember the excitement of these new data bearing on plant interrelationships. The hopes were high, the techniques were rapidly evolving, the quantities of data were large, and young workers were eagerly enthusiastic. Some even went so far as to predict that chemical data would soon replace morphological information as the basis for plant classification. These overly zealous predictions did not materialize, of course, as the history of plant systematics has amply shown during the past two centuries. If there is any distinct characteristic of systematics it is synthesis, as Lincoln Constance (1964) called it, the "unending synthesis." New tools generate new data and provide insights on additional dimensions of plant relationships. This will never change-we will continue to discover new tools and new data in the years ahead, and they will continue to be incorporated into the predictive general reference system of classification.The earlier efforts in chemosystematics focused on secondary plant products: alkaloids, betacyanins, carbohydrates, cyanogenic glycosides, glucosinolates, lipids, terpenoids, and especialiy flavonoids. The latter were particularly well suited for chemosystematic investigation for several reasons: ease of isolation and characterization, small amounts of plant material needed for analysis, stability of compounds especially through routine preparation of herbarium specimens, and low cost to obtain useful information. As a result of these considerable advantages, literally thousands of studies on use of flavonoids in plant systematics have been published. Although now with the present zest for macromolecular data from DNA restriction sites and sequences, there are fewer workers and laboratories dedicated to flavonoid chemosystematic studies; twenty years ago they were the new currency of exciting data in plant systematics.Because of many workers historically interested in the sunflower family, Asteraceae (or Compositae), in part due to its large size (approximately 23,000 species;Bremer, 1994), and because hundreds of flavonoid compounds were discovered in this family, many chemosystematic investigations have been completed on various taxa. Many studies came from the laboratories of R. A. Alston, B. L. Turner, and T. J. Mabry in the Department of Botany ...

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“…8) The antifungal, 9) and antiinflammation 10) of the plant extract were also investigated. Previous phytochemical investigations of this plant described the presence of flavonoids, [11][12][13][14][15] phenolics, 16) alkaloids, 17) terpenoids, 18) and essential oil. 19,20) Recently, chromomoric acids were isolated and showed significant effect on proliferatoractivated receptor (PPAR)-g activation.…”

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confidence: 89%

“…In our ongoing research on the chemistry and biological activity of the traditional herbs, we found that the 70% EtOH extract of the leaves of C. odorata showed significant cytotocxicity against cancer cell lines. A phytochemical study led to the isolation of two new flavonoid glycosides (1, 2) and the eleven known compounds (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). This article reports the isolation and structural determination of isolated components, as well as an evaluation of their cytotoxic activity against LLC and HL-60 cancer cell lines.…”

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confidence: 99%

“…Repeated column chromatography of the ethyl acetate soluble fraction of the 70% EtOH extract of C. odorata leaves resulted in the purification of thirteen compounds (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). The known compounds were identified as aromadendrin 4Ј-methyl ether (3), eriodictyol 7,4Ј-dimethyl ether (4), naringenin 4Ј-methyl ether (5), isosakuranetin (6), quercetin 7,4Ј-dimethyl ether (7), kaempferide (8), acacetin (9), rhamnazin (10), quercetin 3-O-rutinoside (11), kaempferol 3-O-rutinoside (12), and kaempferol 3-O-glucopside (13) (Fig.…”

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Flavonoid Glycosides from Chromolaena odorata Leaves and Their in Vitro Cytotoxic Activity

Hung

Cuong

Dang

et al. 2011

CHEMICAL & PHARMACEUTICAL BULLETIN

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Exudate flavonoids in a tropical weed, Chromolaena odorata (L.) R. M. King et H. Robinson

Cited by 34 publications

References 8 publications

Preventive and curative control of sclerotium rot disease of cocoyam cormel (Colocasia esculenta [L., Scott]) using plant extracts and Trichoderma koningii

Preventive and curative control of sclerotium rot disease of cocoyam cormel (Colocasia esculenta [L., Scott]) using plant extracts and Trichoderma koningii

Flavonoids of the Sunflower Family (Asteraceae)

Flavonoid Glycosides from Chromolaena odorata Leaves and Their in Vitro Cytotoxic Activity

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