Potencial alelopático do extrato etanólico de Anacardium humile (cajuzinho-do-cerrado) na germinação e formação de plântulas de alface, tomate e fedegoso

Pereira, Kelly Cristina Lacerda; Oliveira, Ademir Kleber Morbeck de; Matias, Rosemary; Rizzi, Elvia Silvia; Rosa, Ana Carolina

doi:10.22478/ufpb.1981-1268.2018v12n2.37091

Cited by 5 publications

(10 citation statements)

References 18 publications

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“…Mart., also reported that tomato seeds were more affected than lettuce seeds, demonstrating their greater susceptibility to the metabolites, interfering with both seed germination and seedling growth. The action potential of the aqueous extract of stem and leaves of A. humile has previously been reported by Periotto et al (2012) and Pereira et al (2018), who observed negative effects on the seed germination and seedling growth in lettuce and radish (Raphanus sativus L.), corroborating the findings of this study.…”

Section: Germination Bioassayssupporting

confidence: 92%

“…Despite the large number of studies addressing the allelopathic effects of plant extracts on seed germination and seedling growth, few have analyzed the correlation between presence of secondary metabolites and their intensity, seed germination and vigor, and seedling growth. Among these, the studies by Oliveira et al (2011Oliveira et al ( , 2013, Rizzi et al (2016), Matias et al (2017Matias et al ( , 2018 and Pereira et al (2018) should be highlighted, as they confirm the results obtained in the present study, in which the presence of metabolites interfered in different ways with the germination and growth processes. The aforementioned authors verified that certain metabolites, such as phenolic compounds, flavonoids, cardioactive heterosides and saponins, are responsible for the allelopathic action observed, negatively affecting seed germination and seedling growth.…”

Section: Germination Bioassayssupporting

confidence: 89%

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Chemical profile and allelopathic potential of Anacardium humile St. Hill. (cajuzinho-do-cerrado) leaf aqueous extract in the seed germination and seedling growth of lettuce, tomato and sicklepod

et al. 2019

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Anacardium genus, Anacardiaceae, stands out for the presence of phenolic compounds. One of its species, investigated for its different potential uses, is Anacardium humile; however, little is known about its allelopathic effects. Therefore, the present study aimed to determine the chemical profile and evaluate the herbicide potential of your leaves in the germination of seeds and growth of seedlings of Lactuca sativa (lettuce), Lycopersicon esculentum (tomato) and Senna obtusifolia (sicklepod), both in vitro and in greenhouse. Leaves of A. humile were obtained from 20 matrices of Cerrado fragments in the municipality of Campo Grande, Mato Grosso do Sul state, Brazil. A voucher specimen was deposited at the herbarium (no. 8448). The aqueous extract was obtained from dried and crushed leaves using the extraction method of ultrasonic bath (30 min) with subsequent static maceration. After solvent evaporation, 12.78 g of extract were obtained. The chemical profile of the aqueous extract included determination of total phenolic and flavonoid contents, pH, electrical conductivity, and soluble solids concentration. For the in vitro bioassays, the extract was used at different concentrations, namely, 25, 50, 100, 150, and 200 mg mL-1. In greenhouse, the substrates were prepared using 950 g of vermiculite and 50 g of A. humile leaf powder at the following ratios: (950/50) (5%), 900/100 (10%), 800/200 (20%), and a control (100% vermiculite), under a completely randomized experimental design. Phenolic compounds and anthraquinones were predominant in the chemical profile of the extract, which presented different levels of allelopathic effect on seed germination and seedling growth of plants both in germination chamber and in greenhouse, indicating strong allelopathic activity associated with the different compounds found in the leaves. Therefore, the results showed germination and growth inhibition at different levels, indicating that the substances contained in the leaves of Anacardium humile may be a promising alternative for the control of invasive species.

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Section: Germination Bioassayssupporting

confidence: 92%

Section: Germination Bioassayssupporting

confidence: 89%

Chemical profile and allelopathic potential of Anacardium humile St. Hill. (cajuzinho-do-cerrado) leaf aqueous extract in the seed germination and seedling growth of lettuce, tomato and sicklepod

et al. 2019

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“…Aqueous extract presented a lower frequency of secondary metabolites, being 50% for alkaloids, phenolic compounds, flavonoids and saponins; only the saponins showed a higher frequency in relation to ExtEtOH (Figure 1). The use of ethanol as an effective solvent for the extraction of phytochemicals has also been reported by Pereira et al (2018), working with leaves of Anacardium humille A.St.-Hil, and reporting the presence of eight classes of metabolites. Vernay et al (2008) also pointed out alkaloids as major constituents in the leaves of D. inoxia, a specimen grown in France.…”

Section: Resultsmentioning

confidence: 92%

Phytochemistry and antifungal potential of Datura inoxia Mill. on soil phytopathogen control

Matias

Fernandes²,

Corrêa³

et al. 2020

Biosci. J.

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The application of chemical pesticides for the control of fungal diseases results in impacts on the environment and human health. The use of vegetal extracts with antifungal properties for the proper management of crops becomes a viable alternative, mainly for organic and family farming. The objective of this study was to carry out the phytochemical evaluation of Datura inoxia, evaluating its antifungal potential against the mycelial growth of Fusarium solani and Sclerotinia sclerotiorum. The extracts, aqueous and ethanolic, obtained from the leaves of the plant collected in areas of the municipality of Campo Grande, Mato Grosso do Sul, were submitted to phytochemical prospecting and quantification of flavonoids and total phenols. It was evaluated its antifungal activity at concentrations of 800, 1200, 1600, 2000, and 2400 μg 100 mL-1. Each concentration was separately incorporated into BDA agar, poured into Petri dishes, and inoculated with the mycelial disc of the fungus. The diameter of the colonies were measured daily. Two solutions were prepared as control, one containing the solvent added to PDA medium (ethanol solution), and another with only PDA medium (without D. inoxia extract, control). In both extracts were found the same diversity of secondary metabolites (nine classes). The ethanolic extract, a solvent of lower polarity than water, was more efficient in the extraction of these constituents. Alkaloids and phenolic compounds were the most frequent compounds (100%). In relation to antifungal activity, the ethanolic extract provided 100% inhibition of mycelial growth of Sclerotinia sclerotitorum in all concentrations, relative to the control. On the other hand, the growth of Fusarium solani was only negatively affected at the highest concentrations of 800 and 1200 μmL-1 100 mL-1. The antifungal potential of Datura inoxia was probably related to the abundance of alkaloids and phenolic compounds in its chemical constitution that negatively effects the development of the vegetative mycelium.

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“…In general, the effects caused by allelochemicals tend to be concentration-dependent, that is, they tend to be more pronounced at higher concentrations, and this tendency is observed in the initial growth bioassays in recent studies with leaf extract of Kielmeyera coriacea, Canavalia ensiformis and Anacardium humile, on L. sativa (Santos et al, 2015;Pereira et al, 2018;Matias et al, 2018).…”

Section: Resultsmentioning

confidence: 96%

Phytotoxic potential of aqueous leaf extract of Tocoyena formosa and Rudgea viburnoides

et al. 2019

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Plants have organic components produced as secondary metabolites able to positively or negatively interfere on normal development of other species. The objective of this research was to determine the phytotoxic effects of aqueous leaf extract from two species Rubiaceae family: Tocoyena formosa and Rudgea viburnoides on the germination and initial development of lettuce (Lactuca sativa L). The extract was obtained from mixing 50 g of fresh leaf and 500 mL of distilled water. The experiment was arranged in completely randomized design for each specie, subjected to five extract concentrations: 0, 25, 50, 75 and 100%; and 4 repetitions of 50 seed each. The bioassays were performed in laboratory at controlled temperature and luminosity during seven days. Results showed that the aqueous extract of both species do not affected the germination and the percent of abnormal lettuce seedlings. R. viburnoides showed no pronounced difference in relation to shoot length and dry biomass; however, the root length was reduced by 85%. The extract of T. formosa at higher concentrations, drastically reduce the dry biomass and length of shoots and roots. Therefore, both species have phytotoxic effect on seedling growth of lettuce being the length root the most affected variable.

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Potencial alelopático do extrato etanólico de Anacardium humile (cajuzinho-do-cerrado) na germinação e formação de plântulas de alface, tomate e fedegoso

Cited by 5 publications

References 18 publications

Chemical profile and allelopathic potential of Anacardium humile St. Hill. (cajuzinho-do-cerrado) leaf aqueous extract in the seed germination and seedling growth of lettuce, tomato and sicklepod

Chemical profile and allelopathic potential of Anacardium humile St. Hill. (cajuzinho-do-cerrado) leaf aqueous extract in the seed germination and seedling growth of lettuce, tomato and sicklepod

Phytochemistry and antifungal potential of Datura inoxia Mill. on soil phytopathogen control

Phytotoxic potential of aqueous leaf extract of Tocoyena formosa and Rudgea viburnoides

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