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Biological control of banana black Sigatoka disease with Trichoderma. Repositório Alice
CAVERO, P. A. S.; HANADA, R. E.; GASPAROTTO, L.; COELHO NETO, R. A.; SOUZA, J. T. de.
A Sigatoka-negra causada por Mycosphaerella fijiensis é a doença mais destrutiva da bananeira em termos mundiais. O patógeno está em uma fase invasiva no Brasil e já se encontra distribuído na maior parte dos Estados do país. O potencial de 29 isolados de Trichoderma spp. para o controle da Sigatoka-negra foi estudado sob condições de campo. Quatro isolados foram capazes de reduzir significativamente a severidade da doença e foram selecionados para um segundo experimento de campo. O isolado 2.047 apresentou os melhores resultados e foi utilizado em testes de sensibilidade a fungicidas e produção massal. Esse isolado foi identificado como Trichoderma atroviride por meio do sequenciamento de fragmentos da regiões ITS do rDNA e tef-1? da RNA polymerase....
Tipo: Separatas Palavras-chave: Fungicide sensitivity; Mass production; Sensibilidade a fungicidas; Sigatoka-negra.; Doença de Planta; Mycosphaerella Fijiensis.; Antagonists..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1017004
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Sensitivity of field isolates of Botryotinia ricini to fluazinam and thiophanate-methyl. Repositório Alice
DATOVO, C. de O.; SOARES, D. J..
This study aimed to determine the sensitivity of 61 Botryotinia ricini isolates to the fungicides fluazinam and thiophanate-methyl. The isolates were originated from Goiás (n = 3), Maranhão (n = 3), Mato Grosso (n = 12), Minas Gerais (n = 1), Paraíba (n = 8), Rio Grande do Sul (n = 19) and São Paulo (n = 15) states. Mycelial discs (6 mm) removed from 5-day-old colonies were transferred to Petri dishes containing potato dextrose agar (PDA) amended with different concentrations of the fungicides. Two perpendicular measurements of the radial growth were taken and used to calculate the percentage of mycelial growth inhibition (PMGI) for each treatment (isolate × fungicide × concentration) in relation to the control. PMGI were used to obtain the effective...
Tipo: Artigo de periódico Palavras-chave: Castor gray mold; Fungicide sensitivity; Chemical control.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118747
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Is the emergence of fungal resistance to medical triazoles related to their use in the agroecosystems? A mini review BJM
Ribas e Ribas,Aícha Daniela; Spolti,Pierri; Del Ponte,Emerson Medeiros; Donato,Katarzyna Zawada; Schrekker,Henri; Fuentefria,Alexandre Meneghello.
Abstract Triazole fungicides are used broadly for the control of infectious diseases of both humans and plants. The surge in resistance to triazoles among pathogenic populations is an emergent issue both in agriculture and medicine. The non-rational use of fungicides with site-specific modes of action, such as the triazoles, may increase the risk of antifungal resistance development. In the medical field, the surge of resistant fungal isolates has been related to the intensive and recurrent therapeutic use of a limited number of triazoles for the treatment and prophylaxis of many mycoses. Similarities in the mode of action of triazole fungicides used in these two fields may lead to cross-resistance, thus expanding the spectrum of resistance to multiple...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cross-resistance; Emerging fungal pathogens; Fungicide sensitivity; Agriculture; Medicine.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000400793
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Biological control of banana black Sigatoka disease with Trichoderma Ciência Rural
Cavero,Poholl Adan Sagratzki; Hanada,Rogério Eiji; Gasparotto,Luadir; Coelho Neto,Rosalee Albuquerque; Souza,Jorge Teodoro de.
Black Sigatoka disease caused by Mycosphaerella fijiensis is the most severe banana disease worldwide. The pathogen is in an invasive phase in Brazil and is already present in most States of the country. The potential of 29 isolates of Trichoderma spp. was studied for the control of black Sigatoka disease under field conditions. Four isolates were able to significantly reduce disease severity and were further tested in a second field experiment. Isolate 2.047 showed the best results in both field experiments and was selected for fungicide sensitivity tests and mass production. This isolate was identified as Trichoderma atroviride by sequencing fragments of the ITS region of the rDNA and tef-1α of the RNA polymerase. Trichoderma atroviride was as effective...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antagonists; Fungicide sensitivity; Mass production; Mycosphaerella fijiensis.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000600951
Registros recuperados: 4
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