Seasonal variation in allelopathic potential of the leaves of Copaifera langsdorffii Desf.

Franco, Danilo Miralha; Saldanha, Luiz Leonardo; Neto, José de Sousa Lima; Santos, Lourdes Campaner dos; Dokkedal, Anne Lígia; Almeida, Luiz Fernando Rolim de

doi:10.1590/0102-33062015abb0296

Cited by 9 publications

(6 citation statements)

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“…Foi identificado a presença dos flavonoides (kaempferol e quercetina), no extrato de Copaifera langsdor-ffii (Fabaceae), e houve uma redução da germinação e do crescimento de plântulas de Sorghum bicolor, quando submetidas ao extrato contendo esses compostos (Franco et al, 2016). Flavonoides (rutina e quercetina) e ácidos fenólicos (ácido clorogênico e ácido cafeico) foram encontrados por Golisy et al, (2007), na espécie Fagopyrum esculentum (Polygonaceae), causando efeito alelopático em L. sativa, sendo a rutina a principal responsável pela inibição de crescimento das plântulas.…”

Section: Cromatografia Líquida De Alta Eficiência (Hplc)unclassified

“…Os ácidos fenólicos atuam induzindo o aumento da atividade de enzimas oxidativas, causando assim, modificações da permeabilidade da membrana e a formação de lignina, contribuindo para a redução do crescimento radicular da planta (Ferrarese et al, 2000;Bubna et al, 2011;Oliveira et al, 2011). Os flavonoides são os compostos naturais mais presentes nas plantas e apresentam efeitos alelopáticos capazes de inibir a germinação e o crescimento de plantas (Hoagland & Williams, 2004;Bais et al, 2006;Buer & Djordevic, 2009;Franco et al, 2016).…”

Section: Introductionunclassified

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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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Section: Cromatografia Líquida De Alta Eficiência (Hplc)unclassified

Section: Introductionunclassified

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

et al. 2018

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“…Overall, high temperatures and solar radiation levels contributed to the production of phenolic metabolites in leaves of C. langsdorffii , while rainfall and humidity had little influence in the biosynthesis of these metabolites. A previous study also reported seasonal constancy in overall chemical composition of C. langsdorffii leaves based on water availability, despite only considering variations in quercitrin and afzelin content.…”

Section: Resultsmentioning

confidence: 99%

Quantitative analysis of phenolic metabolites in Copaifera langsdorffii leaves from plants of different geographic origins cultivated under the same environmental conditions

Motta

Sampaio

Costa

et al. 2019

Phytochemical Analysis

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Introduction Galloylquinic acid derivatives and flavonoids are the main phenolic metabolites found in Copaifera langsdorffii leaves (Leguminosae, Detarioideae), a medicinal plant with potential therapeutic application in the treatment of kidney stones. The factors that affect metabolite production in this plant species are not well understood but may include environmental and genetic factors. Objective To quantify the variation in metabolite production over a 12‐month period for 10 groups of C. langsdorffii cultivated under the same environmental conditions. Methods Copaifera langsdorffii seeds were collected from 10 different regions in southeast, Brazil and grown in the same field. HPLC‐UV was used to quantify nine galloylquinic acid derivatives and two flavonoids in leaf samples from mature trees. Climate data for humidity, radiation, precipitation and temperature were provided by the National Institute of Meteorology, Brazil. Multivariate analyses were performed to correlate chemical and environmental variables. Results The overall effect of environmental factors on the production of phenolic metabolites was uniform among C. langsdorffii groups. Chemical variation between groups was present, but small, and probably due to differences in their genetics and physiology. Seasonal changes influenced the production of the major phenolic metabolites, with increases in temperature and radiation levels favouring metabolite production. Conclusion When C. langsdorffii trees are cultivated in the same environment, the production of the major secondary metabolites found in their leaves is very similar quantitatively, varying based on geographic location of original population and seasonal changes. This favours the standardisation of plant raw material for the production of a phytomedicine.

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“…To check for existing phenolic compounds in the leaves and roots of the tested plant, some standards were selected, obtained from Sigma-Aldrich and AcrosOrganics, to compare them with the compounds present. The secondary compounds utilized in this study were chosen according to their participation in allelopathic phenomena described in literature (Santos & Rezende, 2008;Oliveira et al, 2014;Fiorenza et al, 2016;Franco et al, 2016;Peloi et al, 2016;Pereira et al, 2018), namely: gallic acid, catechol, vanillic acid, salicylic acid, vanillin, syringaldehyde, coumaric acid, chlorogenic acid, coumarin, rutin, quercetin, kaempferol, and caffeic acid. All solvents utilized in chromatography were of analytical grade; methanol (Panreac), formic acid (dynamic) and ultrapure water obtained from a Milli-Q system.…”

Section: Methodsmentioning

confidence: 99%

Allelopathic activity of broom (Scoparia dulcis L.) on the germination of invasive plants

Ferreira

Franco

Santos

et al. 2020

Agraria

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Allelopathy is characterized by effects on plant germination or development caused by chemicals released by other plants. This work aimed to verify the allelopathic activity of Scoparia dulcis leaves and roots in weeds and lettuce, as well as to determine the phenolic compounds present in the studied plant. The experiment was arranged in a 2 x 5 factorial design, with six replications of 15 seeds each. The seeds were placed to germinate in agar layers, and after ten days were evaluated the germination percentage, shoot length and root primary length. Phytochemical analysis using high performance liquid chromatography was also carried out, in which the samples were injected three times in the chromatographic system to obtain the average concentrations and retention times, allowing to identify and quantify the studied metabolites. The results showed that this species has allelopathic potential, as it interfered in the development of all receiving plants studied, and the inhibitory action exerted by the leaves was more significant/ou intense on the analyzed variables. On the other hand, the roots presented a larger total amount of phenolic compounds, being caffeic acid found in greater amount both in the roots and leaves.

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Seasonal variation in allelopathic potential of the leaves of Copaifera langsdorffii Desf.

Cited by 9 publications

References 16 publications

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

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

Quantitative analysis of phenolic metabolites in Copaifera langsdorffii leaves from plants of different geographic origins cultivated under the same environmental conditions

Allelopathic activity of broom (Scoparia dulcis L.) on the germination of invasive plants

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