Título:	Effects of UV-B radiation on Lecanicillium spp., biological control agents of the coffee leaf rust pathogen.
Autoria:	GALVAO, J. A. H. BETTIOL, W.
Afiliação:	JOSE ABRAHAO HADDAD GALVAO, CNPMA; WAGNER BETTIOL, CNPMA.
Ano de publicação:	2014
Referência:	Tropical Plant Pathology, Brasília, DF, v. 39, n. 5, p. 392-400, 2014.
Conteúdo:	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.
Thesagro:	Hemileia vastatrix Ferrugem Café Controle biológico
NAL Thesaurus:	Climate change Biopesticides Ultraviolet radiation Leaf rust Biological control Lecanicillium
Palavras-chave:	UV-B Coffee
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPMA)