A new flavonoid from <b> <i>Chromolaena odorata</i> </b>

Pisutthanan, Nisit; Liawruangrath, Boonsom; Liawruangrath, Saisunee; Bremner, John B.

doi:10.1080/14786410600899050

Cited by 34 publications

(20 citation statements)

References 19 publications

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“…Adetayo et al (2005) reported allelopathic effects of Chromolaena extracts on seed germination and seedling growth of cowpea (Vigna unguiculata), maize (Zea mays), soybean (Glycine max), Chromolaena itself and Tridax procumbens. Several flavonoids have been isolated from the aerial parts of Chromolaena (Pisutthanan et al 2006), and although flavonoids can be allelopathic, all plants produce them and the presence of chemicals is not evidence for allelopathic potential. Allelopathic effects of aqueous and organic extracts of Chromolaena and of its residues in soil have also been reported (Onwugbuta 2001).…”

Section: Traditional Approachmentioning

confidence: 99%

Allelopathy and plant invasions: traditional, congeneric, and bio-geographical approaches

et al. 2008

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A relatively small subset of exotic plant species competitively exclude their neighbors in invaded ''recipient'' communities but coexist with neighbors in their native habitat. Allelopathy has been argued as one of the mechanisms by which such exotics may become successful invaders. Three approaches have been used to examine allelopathy as a mechanism for invasion. The traditional approach examines exotic invasives in the same way that other native plants also suspected of allelopathic activities are studied. In this approach dose, fate, and replenishment of chemicals can provide powerful evidence for allelopathic processes. The bio-geographical approach often does not provide as much mechanistic evidence for allelopathy, but comparing the allelopathic effects of exotic invasives on species from their native and invaded communities yields stronger evidence than the traditional approach for whether or not allelopathy actually contributes to invasive success. The congeneric, or phylogenetic, approach involves comparative studies of exotic species with natives in the same genus or that are as closely related as possible. Congeneric approaches are limited in inference and have been used to study the role of natural enemies in exotic invasion, but this approach has not been widely used to study allelopathy and invasion. We discuss these three approaches and present a data set for congeneric Lantana and Prosopis to illustrate how the congeneric approach can be used, and use Centaurea maculosa and (±)-catechin to demonstrate experimentally how traditional and bio-geographic approaches can be integrated to shed light on allelopathy in exotic plant invasions.

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Section: Traditional Approachmentioning

confidence: 99%

Allelopathy and plant invasions: traditional, congeneric, and bio-geographical approaches

et al. 2008

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“…Skadhauge et al (1997) suggested that barley flavonoids play a role in resistance against Fusarium by several mechanisms such as formation of physical barriers and inhibition of fungal cellulases, pectinases and xylanases. Flavonoids have been reported as a prominent group of phytochemicals from C. odorata (Akinmoladun et al 2007;Ngozi et al 2009;Barua et al 1978;Wollenweber et al 1995;Suksamrarn et al 2004;Pisutthanan et al 2006). Therefore, it could be speculated that a flavonoid or group of different flavonoids present in the leaf extract could be responsible for the reduced B. oryzae infection.…”

Section: Discussionmentioning

confidence: 92%

“…C. odorata is known to contain several bioactive phytochemicals, including quinones, steroids, terpenoids and cardiac glycosides (Akinmoladun et al 2007), cyanogenic glycosides, phytates and saponins (Ngozi et al 2009), alkaloids (Akinmoladun et al 2007;Ngozi et al 2009;Biller et al 1994; Thoden et al 2007), tannins (Akinmoladun et al 2007;Ngozi et al 2009;Apori et al 2000), flavonoids, flavanones and flavones (Akinmoladun et al 2007;Ngozi et al 2009; Barua et al 1978;Wollenweber et al 1995;Suksamrarn et al 2004;Pisutthanan et al 2006), flavonoid glucosides (Wollenweber et al 1995;Hung et al 2011), pyrrolizidine alkaloids (Akinmoladun et al 2007;Ngozi et al 2009;Biller et al 1994; Thoden et al 2007) and essential oils (Koba et al 2011;Kossouoh et al 2011;Joshi 2013). However, whether compounds are active as potential plant-disease control agents remains to be elucidated.…”

mentioning

confidence: 97%

Activity-guided separation of Chromolaena odorata leaf extract reveals fractions with rice disease-reducing properties

Rodríguez-Algaba

Sørensen

et al. 2015

Eur J Plant Pathol

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An aqueous extract from the plant Chromolaena odorata [syn Eupatorium odoratum], Eupatorieae, Asteraceae, protected rice against sheath blight by induced resistance. As an initial step towards identification of the specific disease-reducing compounds, leaves from C. odorata were extracted with water and methanol and the extracts separated using a group separation system followed by analysis using capillary electrophoresis. The fractions from the extracts were tested in vitro and in planta using Bipolaris oryzae (cause of brown spot of rice) to test for their potential to reduce disease severity. Activity-guided separation of the C. odorata extracts indicated that compounds with activity could, at least partly, be isolated on a weakly acidic cation exchange column. Further purification yielded fractions with disease reducing effects of up to 72 % at 15 days after inoculation. Activity was found both in methanol and water extracts, indicating that the bioactive compound(s) are hydrophilic, low molecular weight compounds. The disease-reducing fractions did not display any direct antimicrobial effects, but data indicate that they protect the plants by induced resistance as evidenced from increased activity of β-1,3-glucanase.

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“…It has a wide range of bioactivities such as analgesic, antihelmintic, antiinflammatory, antimalarial, antimicrobial, and antioxidant (Omokhua et al 2016). The chemical constituents of the essential oil include pregeijerene, germacrene D, α-pinene, β-caryophyllene, vestitenone, β-pinene, geijerene, bulnesol, and transocimene (Pisutthanan et al 2006). Dichloromethane extracts of this plant had significant cytotoxic effect against Vero monkey kidney cells (Omokhua et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Chemical Constituents and Toxicity Screening of Three Aromatic Plant Species from Peninsular Malaysia

Jumaat¹,

Tajuddin²,

Sudmoon³

et al. 2017

BioResources

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Medicinal and aromatic plants (MAPs) are widely valued for their aromas, tastes, and treatments for various human illnesses. The chemical constituents and toxicity content of three aromatic plant species, Syzygium polyanthum Wight (Walp.), Monocarpia marginalis (Scheff.) J. Sinclair, and Chromolaena odorata (L.) R.M. King & H. Rob, were determined, via gas chromatography (GC) with mass spectrometry (MS), and flame ionization detector (FID). Altogether, 116 compounds were identified in the essential oils and hexane and methanol extracts. Toxicity evaluations were carried out on human peripheral blood mononuclear cells (PBMCs). Three plant samples were found toxic to human PBMCs. The essential oils of M. marginalis and C. odorata, and the hexane extract of C. odorata yielded IC50 and LD50 values of 76 mg/mL and 6,913 mg/kg, 14 mg/mL and 3,684 mg/kg, and 2.45 mg/mL and 1,927 mg/kg, respectively. Based on the LD50 values, M. marginalis and C. odorata can be classified as slightly and moderately hazardous, respectively. A detailed toxicity evaluation via comet assay showed that M. marginalis and C. odorata induced significant DNA damage (p < 0.05). As for S. polyanthum, the species did not give any cytotoxic or genotoxic evidences.

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A new flavonoid from Chromolaena odorata

Cited by 34 publications

References 19 publications

Allelopathy and plant invasions: traditional, congeneric, and bio-geographical approaches

Allelopathy and plant invasions: traditional, congeneric, and bio-geographical approaches

Activity-guided separation of Chromolaena odorata leaf extract reveals fractions with rice disease-reducing properties

Chemical Constituents and Toxicity Screening of Three Aromatic Plant Species from Peninsular Malaysia

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