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Antagonism of Aspergillus terreus to Sclerotinia sclerotiorum. Repositório Alice
MELO, I. S. de; FAULL, J. L.; NASCIMENTO, R. dos S..
An Aspergillus terreus strain showed in vitro antagonistic activity against tha plant pathogens Sclerotinia sclerotiorum (Lib.) de Bary.The interacton between A. terreus and sclerotia revealed that the mycoparasite sporulated abundantly on the sclerotial surface. Cell breakdown due to host cell wall disruption was observed in inner rind cells, by a scanning electron microscopy.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Controle biológico; Micoparasitismo; Sclerotinia sclerotiorum; Aspergillus terreus.
Ano: 2006 URL: http://www.alice.cnptia.embrapa.br/handle/doc/15011
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Antagonistic properties of bionectria sp. 6.21 against plant pathogenic fungi. Repositório Alice
MELO, I. S. de; VILELA, E. S. D.; VALENTE, A. M. M. P.; FAULL, J. L..
2011
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Bionectria sp. 6.21; Antagonistic properties; Plant pathogenic fungi.; Bionectria; Plant pathogenic fungi.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/918315
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Development of mutants of Coniothyrium minitans with improved efficiency for control of Sclerotinia sclerotiorum. Repositório Alice
MELO, I. S. de; MORETINI, A.; CASSIOLATO, A. M. R.; FAULL, J. L..
Coniothurium minitans (CM) is hyperparasitic to Sclerotinia sderotiorum (55), a palhogen of many economically important crops. In this paper, we describe lhe isolation of improved mutants of CM, using a UV - irradiation regime, with altered chitinase production and tolerance to high concentration of iprodione, which are effect:iveagainst Ss. Three out of the 59 mutants obtained inhibited the mycelial growth of CM. Infectivity of sclerotia by the new mutants was assayed by the plant-tissue-based system using carrot segments. More than 80%of sclerotia were colonized by lhe mutants and the wild-type CM. The mutant strains retained ability to produce significant amounts of chitinase. The mutants differed frorn their wild-type strain in appearance, morphology...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coniothvrium minitans; Iprodione; Resistance; Antibiotic production; Sclerotinia sclerotiorum; Doença fúngica; Controle biológico; Fungo para controle biológico; Biological control; Antifungal agents.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/898276
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Mycoparasitic nature of Bionectria sp. strain 6.21. Repositório Alice
MELO, I. S. de; VALENTE, A. M. M. P.; KAVAMURA, V. N.; VILELA, E. S. D.; FAULL, J. L..
Abstract: In this study, a Bionectria sp. strain isolated from citrus rhizosphere was evaluated for its potential in inhibiting the growth of Rhizoctonia solani and Pythium aphanidermatum. It was demonstrated that Bionectria sp. 6.21 inhibited the growth of P. aphanidermatum and R. solani. In dual cultures, however, the antagonist only parasitised R. solani. Regarding the assay involving P. aphanidermatum, a lack of mycoparasitic ability was demonstrated. Crude extract of Bionectria completely inhibited the mycelial growth of both fungi. It appears that the main mechanism involved in the antagonism of Pythium by Bionectria is through antibiotic production. The antagonistic fungus released extracellular secondary metabolites. The metabolites were found to...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Atividade antifúngica; Antifungal activity; Bionectria sp; Enzymes; Plant diseases; Fungo; Fungo para controle biológico; Controle biológico; Rhizoctonia solani; Pythium aphanidermatum; Doença de planta; Fungi; Plant diseases and disorders; Biological control agents; Antifungal properties; Mycoparasits.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1030877
Registros recuperados: 4
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