Mycopathologia (1996) 135, 171-181

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J. Fargues, M.S. Goettel, N. Smits, A. Ouedraogo, C. Vidal, L.A. Lacey, C.J. Lomer and M. Rougier (1996)
Variability in susceptibility to simulated sunlight of conidia among isolates of entomopathogenic Hyphomycetes
Mycopathologia 135 (3), 171-181
Abstract: The influence of simulated sunlight on survival of conidia of 4 species of entomopathogenic Hyphomycetes was investigated. Conidia from 65 isolates of Beauveria bassiana, 23 of Metarhizium anisopliae, 14 of Metarhizium flavoviride and 33 isolates of Paecilomyces fumosoroseus were irradiated by artificial sunlight (295 to 1,100 nm) at an ultra-violet B irradiance of 0.3 W m-2) for 0, 1, 2, 4 and 8h. Survival was estimated by comparing the number of colony forming units (CFU) produced conidia exposed to irradiation to the number of CFUs produced by an unexposed control. Survival decreased with increased exposure to simulated sunlight; exposure for 2h or more was detrimental to all isolates tested. Overall, isolates of M. flavoviride were the most resistant to irradiation followed by B. bassiana and M. anisopliae. Conidia of P. fumosoroseus were most susceptible. In addition to the large interspecies differences in susceptibility to irradiation, there was also an intraspecies variation indicating that strain selection to irradiation tolerance may be important in the development of microbial control agents where increased persistence in an insolated environment is desirable.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Jaques Fargues, Mark S. Goettel, Lawrence A. Lacey, Chris J. Lomer

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Beauveria bassiana (entomopathogen)
Cordyceps fumosorosea (entomopathogen)
Metarhizium acridum (entomopathogen)