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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Effects of UV-B radiation on Lecanicillium spp., biological control agents of the coffee leaf rust pathogen.
Autores:  GALVAO, J. A. H.
BETTIOL, W.
Data:  2014-12-22
Ano:  2014
Palavras-chave:  UV-B
Hemileia vastatrix
Ferrugem
Café
Controle biológico
Climate change
Biopesticides
Ultraviolet radiation
Coffee
Leaf rust
Biological control
Lecanicillium
Resumo:  Coffee leaf rust is the main disease of coffee and its causal agent is naturally hyperparasited by Lecanicillium lecanii, indicating its potential for biocontrol. Ultraviolet-B (UV-B) radiation is an important factor that interferes on application of biocontrol agents, and Lecanicillium can be affected by UV-B. The objective of this work was to evaluate the effects of UV-B on Lecanicillium isolates and on its capacity to colonize rust lesions. There were variations among Lecanicillium strains in sensitivity to UV-B radiation, causing inactivation and delayed spore germination. The most tolerant strain (CCMA-1143) had LD50=1.63 kJ/m2 of UV-B. The incidence and colonization of Lecanicillium on coffee leaf rust lesions were influenced by the dose of UV-B radiation, and were increased when the isolate CCMA-1143 was sprayed on rust lesions. The effects of UV-B should be considered on efficacy studies for the development of biopesticides.

2014
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  13286

http://www.alice.cnptia.embrapa.br/handle/doc/1003378

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/114188/1/2014AP029.pdf
Editor:  Tropical Plant Pathology, Brasília, DF, v. 39, n. 5, p. 392-400, 2014.
Relação:  Embrapa Meio Ambiente - Artigo em periódico indexado (ALICE)
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