Allelopathic effect of black mustard tissues and root exudates on some crops and weeds

Alsherif, Emad A.; Hegazy, Ahmad K.; Gomaa, Nasr H.; Hassan, Mahmoud O.

doi:10.1590/s0100-83582013000100002

Cited by 44 publications

(39 citation statements)

References 24 publications

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“…In contrast with what was observed for the weed species, the germination of Trifolium alexandrinum was not affected by the application of the plant extract at either 1% or 2%. This observation is consistent with that of Al-Sherif et al (2013), who showed that Egyptian clover and wheat are less sensitive to the extracts of Brassica nigra than are the weed species, Phalaris paradoxa and Sisymbrium irio. Previous studies have indicated that weed species might vary in their response/ tolerance to phytotoxicity (Batish et al 2004;Gomaa & AbdElgawad 2012).…”

Section: Discussionsupporting

confidence: 92%

Allelopathic effects of Sonchus oleraceus L. on the germination and seedling growth of crop and weed species

et al. 2014

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We assessed the allelopathic effects of the aqueous extract of Sonchus oleraceus dry shoots on the germination and seedling growth of Trifolium alexandrinum, three weed species (Brassica nigra, Chenopodium murale and Melilotus indicus) and S. oleraceus itself. We assayed four different concentrations of the aqueous extract (w v −1 ): 1%, 2%, 3% and 4%. To determine whether the effects of the extract were attributable to the presence of allelopathic compounds, its osmotic potential or both, we prepared concentrations of polyethylene glycol (PEG) with osmotic potentials equivalent to those of the aqueous extract. All concentrations of the plant extract completely inhibited the germination and seedling growth of C. murale. The lowest concentration of the plant extract partially inhibited germination and seedling growth of B. nigra, M. indicus and S. oleraceus, whereas the higher concentrations inhibited those parameters completely. The germination of T. alexandrinum was not affected by the aqueous extract at 1% or 2%. In general, the aqueous extracts were more effective in inhibiting seed germination and seedling growth than were the PEG solutions. Phytochemical analyses revealed that phenols and alkaloids were the most abundant compounds in S. oleraceus dry matter. Our results suggest that the aqueous extract of S. oleraceus has an allelopathic effect on some weeds, and its usefulness as a bioherbicide therefore merits further study.

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Section: Discussionsupporting

confidence: 92%

Allelopathic effects of Sonchus oleraceus L. on the germination and seedling growth of crop and weed species

et al. 2014

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“…Generally, crop plants may be more resistant to allelochemicals, whereas weeds are more susceptible (Al-Sherif et al 2013;Gomaa et al 2014;Hassan et al 2014b). Possibly T. alexandrinum has an ability to detoxify the phytotoxic compounds in soil via release of sugars or enzymes which, in turn, alters the metabolic activities.…”

Section: Discussionmentioning

confidence: 99%

Flavonoid profiling and nodulation of some legumes in response to the allelopathic stress of Sonchus oleraceus L.

et al. 2015

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Annual sowthistle (Sonchus oleraceus) has been reported to produce allelopathic effects. Two greenhouse experiments were conducted to estimate the allelopathic potential of both plant residue and root exudates of S. oleraceus on flavonoid composition and nodulation in a leguminous crop, Trifolium alexandrinum, and in two leguminous weeds, Melilotus indicus and T. resupinatum. The results of high performance liquid chromatography-mass spectrometry (HPLC--MS/MS) showed that all three legumes contained six flavonoid aglycones: apigenin, daidzein, kaempferol, luteolin, myricetin and quercetin; and seven flavonoid glycosides: daidzin, genistin, hesperidin, hyperoside, kaempferol-7-O--glucoside, naringin and rutin. In general, both plant residue and root exudates had inhibitory effects on the flavonoid composition and nodulation of the target species. However, residue of S. oleraceus caused a significant increase in both individual and total detected flavonoids in T. alexandrinum. The results suggest that the phytotoxins released from S. oleraceus may restrain the biosynthesis of flavonoids in the target species, whereas the accumulated flavonoids in T. alexandrinum are allelopathic-induced metabolites and suggest a resistance mode in this crop.

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“…Para a obtenção das concentrações de 1,25mg ml -1 ; 2,50mg ml -1 ; 5,00mg ml -1 ; 10,00mg ml -1 e 20,00mg ml -1 , o extrato bruto foi solubilizado, adicionando-se 0,1% de DMSO (dimetilssulfóxido) e água destilada, utilizando-se ultrassom até a completa solubilização. Foi utilizada a testemunha com água mais DMSO (adaptado de Al-Sherif et al, 2013 (Ferreira & Áquila, 2000).…”

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Potencial alelopático e identificação dos metabólitos secundários em extratos de Canavalia ensiformis L.

et al. 2018

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Species that have allelopathic potential are promising in agriculture, with the perspective of identifying their secondary metabolites and manipulating them, for practical applications and, thus, be used to control weeds. In this context, this work aimed to verify the allelopathic effect and identify the secondary metabolites in Canavalia ensiformis species. The Lactuca sativa, Digitaria insularis, Emilia coccinea, and Portulaca oleracea species were used as recipient species. To evaluate the allelopathic potential, the ethanolic extract of the shoot (leaf + stem) of the donor species was carried out. Potential allelopathic effects were evaluated by germination tests and initial seedling growth. The identification of the secondary metabolites of the C. ensiformis shoot was also performed using the high-performance liquid chromatography technique. The ethanolic extract causes germination inhibition and germination speed index of L. sativa. The C. ensiformis shoot contains the compounds belonging to phenolic acids (chlorogenic acid, ferulic acid, and caffeic acid), flavonoids (kaempferol, naringin, and rutin), and carboxylic acids (citric, malonic, and aspartic acids), which can be responsible for the allelopathic activity of this species.Keywords: allelopathy; jack bean; phytochemical. RESUMO ABSTRACTPotencial alelopático e identificação dos metabólitos secundários em extratos de Canavalia ensiformis L. 1As espécies que apresentam potencial alelopático são promissoras na agricultura, ante a perspectiva da identificação e manipulação dos seus metabólitos secundários, para aplicações práticas e, assim, sua utilização no controle de plantas daninhas. Por esta razão, este trabalho teve por objetivo verificar o efeito alelopático e identificar os metabólitos secundários de Canavalia ensiformis L. Sementes de Lactuca sativa, Digitaria insularis, Emilia coccinea e Portulaca oleracea foram utilizadas como receptoras. Para avaliar o potencial alelopático, foi preparado o extrato etanólico da parte aérea (folhas mais caules) da espécie doadora. Os efeitos potencialmente alelopáticos foram avaliados por meio de testes de germinação e crescimento inicial de plântulas. Foi realizada, também, por meio da técnica da Cromatografia Líquida de Alta Eficiência, a identificação dos metabólitos secundários da parte aérea de C. ensiformis. O extrato etanólico causa inibição da percentagem e do índice de velocidade de germinação de L. sativa. A parte aérea de C. ensiformis contém ácidos fenólicos (ácido clorogênico, ácido ferúlico, ácido cafeico), flavonoides (kaempferol, naringina e rutina) e ácidos carboxílicos (ácido cítrico, ácido malônico e ácido aspártico), podendo ser os responsáveis pela atividade alelopática dessa espécie.

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Allelopathic effect of black mustard tissues and root exudates on some crops and weeds

Cited by 44 publications

References 24 publications

Allelopathic effects of Sonchus oleraceus L. on the germination and seedling growth of crop and weed species

Allelopathic effects of Sonchus oleraceus L. on the germination and seedling growth of crop and weed species

Flavonoid profiling and nodulation of some legumes in response to the allelopathic stress of Sonchus oleraceus L.

Potencial alelopático e identificação dos metabólitos secundários em extratos de Canavalia ensiformis L.

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