Potencial antifúngico de extratos de plantas e de basidiomicetos nativos sobre Colletotrichum acutatum, Alternaria solani e Sclerotium rolfsii

Domingues, Ricardo José; Young, Maria Cláudia Marx; Töfoli, Jesus Guerino; Matheus, Dácio Roberto

doi:10.1590/s0100-54052011000300013

Cited by 8 publications

(7 citation statements)

References 5 publications

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“…The inhibitory effect of rue extract on M. oryzae mycelial growth, in the present study, agrees with previously reported effects of extracts and essential oils on mycelial growth of other plant pathogens, including Alternaria solani, A. alternata, Aspergillus sp., Cercospora kikuchii, Fusarium solani, Phomopsis sp., Colletotrichum acutatum, C. gloeosporioides, Sclerotium rolfsii, Rhizoctonia solani, and Phytophthora sp. (Celoto et al, 2008;Domingues et al, 2009;Pedroso et al, 2009;Garcia et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

“…Its most notable effect was as antifungal activity against Colletotrichum gloeosporioides (Celoto et al, 2008), Alternaria solani (Domingues et al, 2009;Pedroso et al, 2009), Sclerotium rolfsii (Domingues et al, 2009), Aspergillus sp, Cercospora kikuchii, Fusarium solani, Phomopsis sp. (Venturoso et al, 2011), Colletotrichum acutatum, Sclerotinia sclerotiorum (Garcia et al, 2012), caused by secondary metabolites such as alkaloids, flavonoids, coumarins and furanocoumarins present in many species of the genus Ruta.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of rue extract and its potential for controlling rice blast

Reis

Cortes

Martins

et al. 2015

Pesq. agropec. bras.

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-The objective of this work was to purify and standardize the rue (Ruta graveolens) extract and evaluate its effect on Magnaporthe oryzae as an alternative to the integrated management of rice blast. The drug was characterized, the liquid extract was obtained, and the methodology for quantifying the standard markers psoralen and bergapten was validated. Rue extract and the markers, solely or in combination, were assayed in vitro, as well as in greenhouse conditions, for their ability to suppress leaf blast, by the evaluation of mycelial growth, conidial germination, and appressorium formation. Rue extract inhibited M. oryzae mycelial growth (100%), conidial germination (LD 50 =0.237 mg), and the appressorium formation (LD 50 =0.121 mg); besides, the extract reduced leaf blast severity by 80.84%. Fluorescence microscopy showed that rue extract did not damage M. oryzae cell wall and plasma membrane, indicating another mode of action. Rue extract has a great potential for controlling rice leaf blast.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of rue extract and its potential for controlling rice blast

Reis

Cortes

Martins

et al. 2015

Pesq. agropec. bras.

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“…O uso de extratos vegetais no controlo de doenças de plantas ainda é muito incipiente, apesar dos inúmeros relatos de ação fungitóxica in vitro de extratos de diferentes espécies vegetais contra fungos fitopatogênicos como: de extratos de alho (Allium sativum) e de canela (Cinnamomum zeylanicum) sobre Aspergillus flavus (Viegas et al, 2005) e Alternaria solani (Domingues et al, 2009;Pedroso et al, 2009); e de extratos de tabaco (Nicotiana tabacum) e alho sobre Colletotricum acutatum (Almeida et al, 2009). Entre as opções de caldas mais utilizadas estão a bordalesa, viçosa e sulfocálcica.…”

Section: Introductionunclassified

Sensibilidade de Stemphylium solani a extratos vegetais e caldas e controlo da doença no tomateiro em estufa

Domingues¹,

Santos²,

Kowata-Dresch³

et al. 2017

Rev. Ciênc. Agr.

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R E S U M ODesenvolveu-se este trabalho com o objectivo de avaliar o efeito de extratos de canela (12%), alho (8%), pimenta (16%), tabaco (6%), e das caldas viçosa, bordalesa, sulfocálcica e sulfocálcica em emulsão (todas a 1%) em cinco isolados de Stemphylium solani e a eficácia dos mesmos em controlar a doença no tomateiro em estufa. Nos testes in vitro, utilizaram-se clorotalonil (1800 mg.L -1 ) e água como testemunhas e avaliaram-se o efeito dos tratamentos no crescimento micelial, germinação e produção de conídios. Em estufa, avaliou-se o efeito dos tratamentos na área abaixo da curva da progressão da doença (AACPD) e na produção de frutos, alterando o fungicida utilizado como testemunha para mancozebe (3 g.L -1 ). Observou-se grande variabilidade entre os isolados quanto à sensibilidade aos tratamentos. Estes não afetaram a esporulação, excepto a calda sulfocálcica em emulsão que a estimulou em todos os isolados. As caldas bordalesa e viçosa inibiram completamente o crescimento micelial e reduziram significativamente a germinação dos conídios na maioria dos isolados. Os extratos vegetais e as caldas causaram redução da AACPD comparado à testemunha água, especialmente a calda bordalesa, mas não afetaram a produção de frutos. Palavras-chave: Calda bordalesa, calda viçosa, extrato de alho, testes in vitro, Solanum lycopersicum. A B S T R A C TThe aim of this work was to evaluate the effect of extracts of cinnamon (12%), garlic (8%), pepper (16%) and tobacco (6%) and viçosa mixture, bordeaux mixture, lime sulfur and sulfur emulsion (all 1%) on five isolates of Stemphylium solani and their efficiency in disease control of tomato in greenhouse. In tests in vitro, chlorothalonil (1800 mg.L -1 ) and water were used as controls and the mycelial growth, germination and the production of conidia were evaluated. At greenhouse, the treatments effect on the area under the disease progress curve (AUDPC) and production of fruits was evaluated, altering the fungicide control to mancozebe (3 g.L -1 ). There was high variability among isolates concerning sensitivity to treatments. Treatments did not affect spore production, except lime sulfur emulsion, which stimulated it in all isolates. Viçosa and bordeaux mixtures inhibited completely the mycelial growth and reduced significantly the conidial germination in most isolates. The extracts and mixtures decreased the AUDPC compared to water control, mainly bordeaux mixture. The treatments did not affect the fruits production.

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“…Algumas espécies de plantas apresentam uma diversidade de substâncias em sua composição, advindas de metabolismo primário e secundário, tendo estes muitas vezes potencial atividade antimicrobiana (CELOTO et al, 2008;DOMINGUES et al, 2011;AMORIM et al, 2011;BORGES et al, 2013;ARAÚJO et al, 2014). Alguns trabalhos têm demonstrado o efeito do uso de extratos de plantas.…”

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