Effects of UV-B radiation on Lecanicillium spp., biological control agents of the coffee leaf rust pathogen.
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.
Main Authors: | GALVAO, J. A. H., BETTIOL, W. |
---|---|
Other Authors: | JOSE ABRAHAO HADDAD GALVAO, CNPMA; WAGNER BETTIOL, CNPMA. |
Format: | Separatas biblioteca |
Language: | English eng |
Published: |
2014-12-22
|
Subjects: | UV-B, Coffee., Hemileia vastatrix, Ferrugem, Café, Controle biológico, Climate change, Biopesticides, Ultraviolet radiation, Leaf rust, Biological control, Lecanicillium., |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1003378 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Efeito de diferentes doses de radiação UV-B na germinação de urediniósporos de Hemileia vastatrix.
by: SANTOS, A. P., et al.
Published: (2012-03-07) -
Efeito do aumento da radiação UV-B na germinação de urediniósporos de Hemileia vastatrix.
by: SANTOS, A. P., et al.
Published: (2012-03-20T11:11:11Z) -
Sensibilidade dos conídios de Lecanicillium lecanii em diversos estádios de germinação a radiação UV-B.
by: GALVÃO, J. A. H., et al.
Published: (2013-03-04) -
Sensibilidade de urediniósporos de Hemileia vastatrix a radiação UV-B.
by: SANTOS, A. P., et al.
Published: (2012-03-08) -
Sobrevivência de Clonostachys rosea em discos de folha expostos à radiação UV-B .
by: COSTA, L. B., et al.
Published: (2012-03-20T11:11:11Z)