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Title: | Effects of UV-B radiation on Lecanicillium spp., biological control agents of the coffee leaf rust pathogen. |
Authors: | GALVAO, J. A. H.![]() ![]() BETTIOL, W. ![]() ![]() |
Affiliation: | JOSE ABRAHAO HADDAD GALVAO, CNPMA; WAGNER BETTIOL, CNPMA. |
Date Issued: | 2014 |
Citation: | Tropical Plant Pathology, Brasília, DF, v. 39, n. 5, p. 392-400, 2014. |
Description: | 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 |
Keywords: | UV-B Coffee |
Type of Material: | Artigo de periódico |
Access: | openAccess |
Appears in Collections: | Artigo em periódico indexado (CNPMA)![]() ![]() |
Files in This Item:
File | Description | Size | Format | |
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2014AP029.pdf | 1,43 MB | Adobe PDF | ![]() View/Open |