EFEITO DE EXTRATOS DE Allamanda blanchetti NO CONTROLE DE Alternaria brassicicola EM MUDAS DE COUVE-MANTEIGA

Barros, Juliana de Souza Granja; Gomes, Erbs Cintra de Souza; Cavalcanti, Leonardo Sousa

doi:10.1590/1983-21252015v28n304rc

Cited by 8 publications

(9 citation statements)

References 23 publications

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“…Many plant and plant extracts have been reported to have antimicrobial properties against plant pathogenic fungi (Sharmin et al, 2013;Vergnes, 2014;Akladious et al, 2015;Santos et al, 2015). Allamanda species extract has been proved as effective in controlling plant pathogenic fungi (Islam, 2004;Ravikumar et al, 2013;Basar et al, 2011;Mone et al, 2013;Barros et al, 2015;Brito et al, 2018). However, there is a small report available in the studies on detailed analyzes of leaf extract and its antifungal activity against plant pathogens.…”

Section: Discussionmentioning

confidence: 99%

“…These mechanisms may involve enzymes such as β-1,3-glucanase, peroxidase and chitinase, among others. Plant extracts with bioactive substances may presents the capacity to act as resistance inducers (Barros et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…2013;Savithramma et al, 2013). Several reports described the native plant extracts potential to control plant diseases (Barros et al, 2015;Dos Santos et al, 2015;Peixinho et al, 2017). Brazil´s flora species present high potential as a source of bioactive substances for control of plant diseases.…”

Section: Introductionmentioning

confidence: 99%

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Extracts From Leaves of Allamanda blanchetti Inducing Mechanism of Defense to Diseases in Sugarcane

Oliveira¹,

Almeida²,

Silva³

et al. 2019

JAS

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This research aims to analyze the effect of the extract from a native plant from Caatinga, Allamanda blanchetti, in the induction of resistance mechanisms in a sugarcane variety smut-susceptible. Initially, it carried out a phytochemical analysis to know the main plant compounds used in this study. Diverse chemicals content in ethanolic extract from A. blanchetii were detected by thin-layer chromatography (TLC). Flavonoids, were more abundant compounds following by terpenes, stereroids and saponins. Under greenhouse conditions the sugarcane plants, SP-791011 (smut-susceptible), were sprayed with extracts from A. blanchetti extracted at cold at concentrations of 1000 ppm and acilbenzolar-S-metil (ASM) (100 mg/L). Leaves were collected at 0, 24 and 48 hours after spraying and used in the RT-PCR analysis for to identify the defense gene expression. Change in gene expression were observed in the different treatments, especially in the expression of pathogenesis-related (PR) genes. The extract of A. blanchetti induced an increase in the glucanase expression and was more effective than ASM inducer. SNPR1 gene show increased in the two treatment. The results indicate that A. blanchetti extracts was able to activate the resistance mechanism as observed in resistant plants. This paper is the first report about the use of Caatinga natural plant extracts inducing resistance genes against Sporisorium scitamineum in sugarcane susceptible genotype.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Extracts From Leaves of Allamanda blanchetti Inducing Mechanism of Defense to Diseases in Sugarcane

Oliveira¹,

Almeida²,

Silva³

et al. 2019

JAS

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“…acephala) is a brassica that presents important impact on the nutritional matter by richness in iron, calcium, vitamin A and ascorbic acid as well as the economic matter considering the increasing expansion of the organic vegetables market. Scientific studies are directed to this vegetable in order to better understand its development and its requirements in relation to the environment, inputs, substrates and related pests (SILVA et al, 2012;FERREIRA et al, 2014;BARROS et al;2015). The brassica originate in cold weather and can be produced in tropical climate due to the genetic improvement, which allowed greater resistance and adaptation to heat (MALUF et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

Kale Seedlings Production in Different Substrates, Cell Volumes and Protected Environments

et al. 2017

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ABSTRACT:The kale is a brassica, this vegetable presents importance on nutritional and economic patterns. The present study aimed to evaluate the effect of different substrates, trays and protected environment in the formation of kale seedlings. The experiment was conducted in two greenhouses located at the State University of Mato Grosso do Sul -MS. The first environment consisted of an agricultural greenhouse with polyethylene film cover, while the second was an agricultural nursery with monofilament screen and mesh to offer 50% of shading. In each protected environment were used 72 and 128 cells tray and six different compositions of substrates with organic material based on cassava branches (CB) and cattle manure (CM): 1) 100% CM; 2) 20% CM + 80% CB; 3) 40% CB + 60% CM; 4) 60% CB + 40% CM; 5) 80% CB + 20% and CM; 6) 100% CB. The seedlings were evaluated according to the parameters: dry mass of seedlings, stem diameter and plant height. The agricultural nursery was the most suitable for the formation of kale seedlings, with 72 cells tray and the substrate composed of organic matter with 20% of cassava branches and 80% of cattle manure.

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“…As barras sobre as colunas representam o erro padrão da média, avaliando o efeito do Acadian ® sobre o fungo C. gloeosporioides em mamões, na fase de pós-colheita, verificaram que o produto foi eficiente em inibir a germinação dos conídios do fungo, nas duas concentrações testadas, 40 mL L -1 e 60 mL L -1 , valores 4 e 6 vezes maiores do que a maior concentração utilizada nos ensaios aqui descritos. De modo semelhante,Barros et al (2015) verificaram efeito inibitório do extrato de algas sobre a germinação de conídios de Alternaria brassicicola, agente da alternariose em mudas de couve-manteiga. As fucanas, polissacarídeos algais presentes na espécie A. nodosum, são apontadas como os agentes de inibição da germinação dos propágulos infectivos de diversos fitopatógenosStadnik & Freitas, 2012) e, sendo estas moléculas os prováveis agentes de inibição da germinação dessas estruturas, estas podem ser apontadas como a possível causa da diminuição da germinação dos conídios de C. gloeosporioides na presença do extrato, observada nestes ensaios.Há vários registros na literatura do efeito do fosfito de potássio sobre a germinação de conídios de diversos fitopatógenos, como Verticillium dahliae, C. musae(Viana et al, 2012) e C. tamarilloi os produtos foram eficientes na redução do crescimento micelial, produção e germinação de conídios de C. gloeosporioides, em todas as concentrações testadas.…”

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Efeito do extrato da alga marinha <em>Ascophyllum nodosum</em> e do fosfito de potássio na morfofisiologia do fungo <em>Colletotrichum gloeosporioides</em>, na indução de resistência em mangas \'Tommy Atkins\' contra a antracnose e em características físicas e químicas desses frutos

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Pelo apoio incondicional, amor desmedido e por serem os melhores pais desse mundo! Aos meus irmãos, Alexandre de Melo e Fernanda de Melo Pelo amor que nos une, amizade e suporte ao longo de toda a minha vida! Ao meu avô (in memoriam), José Raimundo Anchieta Que partiu dizendo a todos, com o peito cheio de orgulho, que eu havia mudado para São Paulo só para fazer um curso. Estou de volta, vovô! O curso acabou! À minha avó, Rosa Maria Brito Que sempre esteve ao meu lado, em todas as decisões da minha vida! A Stênio Bruzaca, Que me inunda todos os dias com amor, carinho e companheirismo! A todos vocês, dedico. 4 AGRADECIMENTOS Há muito o que agradecer, especialmente porque em mim, é clara a certeza de que ninguém faz um doutorado sozinho. Primeiramente, agradeço a Deus pela minha vida, pelo cuidado diário e pelas oportunidades incríveis que Ele me proporciona. Eu não sei o que é sonhar e não concretizar e isso tudo acontece sob a permissão do Pai, por isso, muito obrigado. Agradeço, especialmente, ao meu orientador, o Prof. Dr. Sérgio Florentino Pascholati, pela amizade, dedicação, confiança e por ser um exemplo de profissional e ser humano. Por mostrar, para todos os seus orientados, que podemos ser professores e pesquisadores de sucesso, sem perder valores que, mesmo não estando no Lattes, são mais importantes do que qualquer grande descoberta. Aos meus pais, Roger de Melo e Sílvia de Melo, e aos meus irmãos, Alexandre de Melo e Fernanda de Melo, por andarem ao meu lado todos os dias, por apoiarem e respeitarem as minhas escolhas e decisões e por serem a melhor família que eu poderia ter.

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EFEITO DE EXTRATOS DE Allamanda blanchetti NO CONTROLE DE Alternaria brassicicola EM MUDAS DE COUVE-MANTEIGA

Cited by 8 publications

References 23 publications

Extracts From Leaves of Allamanda blanchetti Inducing Mechanism of Defense to Diseases in Sugarcane

Extracts From Leaves of Allamanda blanchetti Inducing Mechanism of Defense to Diseases in Sugarcane

Kale Seedlings Production in Different Substrates, Cell Volumes and Protected Environments

Efeito do extrato da alga marinha <em>Ascophyllum nodosum</em> e do fosfito de potássio na morfofisiologia do fungo <em>Colletotrichum gloeosporioides</em>, na indução de resistência em mangas \'Tommy Atkins\' contra a antracnose e em características físicas e químicas desses frutos

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