Allelopathy of Miconia spp. (Melastomataceae) in Lactuca sativa L. (Asteraceae)

Santos, Marcos Aurélio Figueirêdo dos; Silva, Maria Arlene Pessôa da; Santos, Antonio; Alencar, Sarah Ribeiro; Torquato, Isabella Hevily Silva; Andrade, Amanda Oliveira; Costa, Natália Cavalcante da; Generino, Maria Elizete Machado; Landim, Hemerson Soares; Oliveira, Alison Honorio de

doi:10.5539/jas.v7n12p151

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…After that time, the solutions and solids were triturated for 1 minute and filtered for retention of all fibrous material, followed by centrifugation at 3000 rpm for 10 minutes. The extracts were evaluated for their osmotic levels and hydrogenation potential (Santos et al, 2015).…”

Section: Plant Extract and Bioassay Preparationsmentioning

confidence: 99%

Cordia oncocalyx (Allemão) Baill. (Boraginaceae) Chemical Composition and Alelopathic Effect Against Weeds

Silva¹,

Santos²,

Bezerra³

et al. 2018

JAS

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Through secondary metabolism, plants produce chemical compounds which when released into the environment can have effects on other species, such effect is called allelopathy. In this research we evaluated the Cordia oncocalyx (Boraginaceae) allelopathic potential against two weed species, Cenchrus echinatus and Calotropis procera, as well as quantified its phenolic compounds using HPLC-DAD. The experimental design was completely randomized with six treatments and one control group (distilled water). Each treatment consisted of four replicates with 25 seeds each, totaling 100 seeds per treatment. The variables analyzed were: germinating potential, germination velocity and seedling development. The hot and cold infusion extracts were prepared with 50 g of each of the three parts of the donor plant (bark, leaves and roots) immersed in 500 ml of distilled water at 100 °C (hot infusion) and 25 °C (cold infusion). The experiments were mounted in Petri dishes having substrate filter paper embedded in 3 mL of the extracts (treatments) and conducted in a germination chamber. Hot and cold infusion extracts of the C. oncocalyx leaves, barks and roots presented allelopathic activity on C. echinatus and C. procera germination and development, with the hot bark extract promoting such effect with a greater intensity. The allelopathic effect observed may be due to the presence of allelochemicals such as caffeic acid, quercentin and kaempferol present in C. oncocalyx leaves, barks and roots.

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Section: Plant Extract and Bioassay Preparationsmentioning

confidence: 99%

Cordia oncocalyx (Allemão) Baill. (Boraginaceae) Chemical Composition and Alelopathic Effect Against Weeds

Silva¹,

Santos²,

Bezerra³

et al. 2018

JAS

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show abstract

“…However, recent studies have focused not only on the medicinal but also on the allelochemical applicability of these secondary metabolites. Few studies have reported the phytotoxic and allelopathic action of the extracts, and even fewer have reported on the compounds isolated from species belonging to this genus [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Weed Growth under the Influence of Extracts and Metabolites Isolated from Miconia spp.

et al. 2022

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Weeds pose a problem, infesting areas and imposing competition and harvesting difficulties in agricultural systems. Studies that provide the use of alternative methods for weed control, in order to minimize negative impacts on the environment, have intensified. Native flora represents a source of unexplored metabolites with multiple applications, such as bioherbicides. Therefore, we aimed to carry out a preliminary phytochemical analysis of crude extracts and fractions of Miconia auricoma and M. ligustroides and to evaluate these and the isolated metabolites phytotoxicity on the growth of the target species. The growth bioassays were conducted with Petri dishes with lettuce, morning glory, and sourgrass seeds incubated in germination chambers. Phytochemical analysis revealed the presence of flavonoids, isolated myricetin, and a mixture of quercetin and myricetin. The results showed that seedling growth was affected in a dose-dependent manner, with the root most affected and the seedlings of the lettuce, morning glory, and sourgrass as the most sensitive species, respectively. Chloroform fractions and myricetin were the most inhibitory bioassays evaluated. The seedlings showed structural changes, such as yellowing, nonexpanded cotyledons, and less branched roots. These results indicate the phytotoxic potential of Miconia allelochemicals, since there was the appearance of abnormal seedlings and growth reduction.

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Allelopathy of Miconia spp. (Melastomataceae) in Lactuca sativa L. (Asteraceae)

Cited by 2 publications

References 3 publications

Cordia oncocalyx (Allemão) Baill. (Boraginaceae) Chemical Composition and Alelopathic Effect Against Weeds

Cordia oncocalyx (Allemão) Baill. (Boraginaceae) Chemical Composition and Alelopathic Effect Against Weeds

Reduction of Weed Growth under the Influence of Extracts and Metabolites Isolated from Miconia spp.

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