EFEITO DE EXTRATOS AQUOSOS DE ESPÉCIES VEGETAIS SOBRE A MULTIPLICAÇÃO DE ROTYLENCHULUS RENIFORMIS LINFORD &amp; OLIVEIRA

Gardiano, Cristiane Gonçalves; Muramoto, Shoko; Krzyzanowiski, A.A.; Almeida, Wilson Paes de; Saab, Otavio Jorge Grigoli Abi

doi:10.1590/1808-1657v78p5532011

Cited by 14 publications

(8 citation statements)

References 1 publication

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“…The use of plants of the Solanaceae family as biofumigants also led to an effective reduction (> 70%) in the number of galls on potato plants infected with M. incognita J 2 (Sari et al, 2018). Several other studies using extracts from different plant species, such as papaya leaves and seeds (Carica papaya), garlic cloves (Allium sativum L.), mint leaf extracts (Mentha piperita), menthol (Ageratum conyzoides L.), bitter melon (Mormodica charantia L.), rosemary (Rosmarinus officinalis L.), oregano (Origanum vulgare L.), showed satisfactory results on the control of PPNs in the greenhouse, demonstrating the great potential of plant extracts (Dias et al, 2000;Gardiano et al, 2011;Martins and Santos, 2016). Furthermore, the decrease in the number of egg masses (NEM) and galls (NG) is directly associated with a lower reproduction factor (RF) of nematodes.…”

Section: Discussionmentioning

confidence: 99%

Crude Aqueous Root Extracts of Solanum spp. Show Nematotoxic Activity Against Meloidogyne incognita

Ferreira¹,

Ombredane²,

Pimentel³

et al. 2022

JAS

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Brazilian crops are strongly affected by the root-knot nematode Meloidogyne incognita, which compromises food production and causes serious economic losses around the world. Synthetic nematicides are still some of the main control strategies for this pathogen, despite the high risk to human health and the environment. Therefore, sustainable biotechnology represents a viable alternative for nematode control. Plants of the Solanaceae family are present in several biomes and are a source of secondary metabolites of various chemical classes. In this context, the nematotoxic effect of crude aqueous root extracts (CAREs) of three Solanum species was investigated: Solanum americanum, S. subinerme and S. lycocarpum. CARE showed high nematicidal activity (94.6±9.2% mortality, p ≤ 0.001) against second-stage juveniles (J2) of M. incognita, even after heating to 50 °C. These CAREs also inhibited hatching of juveniles (98.4±0.7% of mortality, p ≤ 0.001) in addition to presenting a mean lethal dose of 336 μg ml-1. No toxic activity was observed against non-target organisms, such as fungi (Trichoderma harzianum and Trichoderma asperellum), yeast (Candida maltosa), nitrogen-fixing bacteria (Bradyrhizobium diazoefficiaens, B. japonicum), two strains of Azospirillum brasilense, AbV 5 and AbV 6 and Bacillus [2538 Ba]. Bioassay performed in a greenhouse demonstrated that CAREs of these species were effective in reducing the number of egg masses and galls (> 85%, p ≤ 0.0001), and did not show a phytotoxic effect on soybean seedlings. Our findings indicate that CAREs from plants of the Solanaceae family, especially S. lycocarpum, demonstrated nematotoxic activity on J2 and inhibited the hatching of Meloidogyne incognita eggs, representing an ecologically appropriate tool to control nematode infection in crops worldwide.

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Section: Discussionmentioning

confidence: 99%

Crude Aqueous Root Extracts of Solanum spp. Show Nematotoxic Activity Against Meloidogyne incognita

Ferreira¹,

Ombredane²,

Pimentel³

et al. 2022

JAS

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“…Plant-origin compounds may kill active forms of nematodes, inhibit hatching, impair nematode movement, interfere with root location, or even activate plant defense mechanisms (Ferraz et al 2010). A plethora of chemicals from plants may have nematicidal properties, including phenolic compounds, alkaloids, tannins, fatty acids, terpenes, among others (Neves et al 2008;Gardiano et al 2011;Mateus et al 2014;Barros et al 2019;Gomes et al 2020;Silva et al 2020a;Silva et al 2020b).…”

Section: Extracts and Purified Substances Of Cabralea Canjerana Inhib...mentioning

confidence: 99%

Extracts and purified substances of Cabralea canjerana inhibit hatching and extracts of Schinus terebinthifolius kill juveniles of meloidogyne incognita

Gomes

Silva

et al. 2022

Biosci. J.

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Nematicidal substances have been identified from plants and are potentially useful for the management of plant-parasitic nematodes. Cabralea canjerana, (Meliaceae) and Schinus terebinthifolius (Anacardiaceae) produce bioactive compounds during their secondary metabolism and little is known about the effect of such substances on plant-parasitic nematodes. In the present study, we assessed the effect of aqueous and ethanolic extracts of C. canjerana and S. terebinthifolius at 1% (m:v) and purified substances from C. canjerana (gedunin, ocotillone, cabraleadiol, a mixture of ocotillone + cabraleadiol and a mixture of shoreic acid + eichlerianic acid) on hatching and mortality of Meloidogyne incognita juveniles. Aqueous extracts of C. canjerana fruits and seeds reduced hatching by 70.3 to 95.7%. Aqueous extracts of S. terebinthifolius fruits killed 42.8 to 77.1% of juveniles. The purified substances of C. canjerana inhibited the hatching of M. incognita from 57 to 90% and did not increase the mortality of juveniles. Therefore, C. canjerana extracts and its purified substances reduce M. incognita hatching and aqueous extracts of S. terebinthifolius kill J2 of this nematode.

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“…Isso foi demonstrado no estudo realizado por Itako et al (2008), no qual o extrato de alecrim diminui em 20% o número de lesões da pinta preta (Alternaria solani) em folhas de tomateiro. Em contrapartida, o estudo desenvolvido por Gardiano et al (2011) avaliou o efeito do extrato aquoso de alecrim na proporção de 1g de folhas secas para cada 10mL de água destilada sobre a multiplicação do nematóide Rotylenchulus reniformis em plantas de algodoeiro, porém não houve resultado significativo.…”

Section: Massa Fresca (G)unclassified

AVALIAÇÃO DO POSSÍVEL EFEITO BIOESTIMULANTE DO EXTRATO DE ALECRIM NO TEOR DE ÓLEO ESSENCIAL DE Rosmarinus sp.

Moreira¹,

Abreu²,

Souza³

2016

REFACER

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Introdução: O Rosmarinus sp. (alecrim) possui ação antiinflamatória, antimicrobiana, antitumoral e antioxidante. Os terpenos, flavonóides e ácidos fenólicos (metabólitos secundários) são os responsáveis pelas suas propriedades. Vários fatores interferem no rendimento dos metabólitos secundários, dentre eles está a utilização de bioestimulantes. Objetivo: Avaliar o teor de óleo essencial do Rosmarinus sp. por meio da bioestimulação com o extrato hidro alcoólica de alecrim. Metodologia: Os alecrins em fase adulta foram destinados à produção do extrato hidro alcoólica na concentração de 0,1 g/mL, e o solvente utilizado foi solução hidro alcoólica a 80%. Primeiro, o óleo essencial das mudas de alecrim foi extraído pelo método de hidrodestilação acoplado ao aparato de Clevenger, por 2 horas. Posteriormente, cinco mudas de alecrins foram borrifados com extrato de alecrim e cinco com solução hidroalcóolica a 80%, por 30 dias no período de 08:00 e 13:00h. Em seguida, foram realizadas novas extrações e o teor foi expresso em porcentagem de óleo essencial (%) em relação à massa fresca. Resultados e Discussão: O teor do óleo essencial de alecrim foi 3,33%. Após as borrifações, o teor permaneceu o mesmo em todas as plantas. Observou que o extrato apresentou toxicidade sobre as mudas de Rosmarinus sp., pois muitas morreram. Já as mudas que receberam a solução hidro alcoólica a 80% permaneceram saudáveis. Conclusão: O extrato hidro alcoólica de alecrim não teve efeito bioestimulante no teor do óleo essencial na espécie Rosmarinus sp., o qual poderá ser uma alternativa no desenvolvimento de herbicidas para o cultivo de lavouras e plantações, devido sua toxicidade.Palavras-Chave: Alecrim. Bioestimulante. Hidrodestilação.

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EFEITO DE EXTRATOS AQUOSOS DE ESPÉCIES VEGETAIS SOBRE A MULTIPLICAÇÃO DE ROTYLENCHULUS RENIFORMIS LINFORD & OLIVEIRA

Cited by 14 publications

References 1 publication

Crude Aqueous Root Extracts of Solanum spp. Show Nematotoxic Activity Against Meloidogyne incognita

Crude Aqueous Root Extracts of Solanum spp. Show Nematotoxic Activity Against Meloidogyne incognita

Extracts and purified substances of Cabralea canjerana inhibit hatching and extracts of Schinus terebinthifolius kill juveniles of meloidogyne incognita

AVALIAÇÃO DO POSSÍVEL EFEITO BIOESTIMULANTE DO EXTRATO DE ALECRIM NO TEOR DE ÓLEO ESSENCIAL DE Rosmarinus sp.

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