Compatibility of Beauveria bassiana and alternative phytosanitary products

Aims To assess the compatibility of alternative phytosanitary products (APPs) with the entomopathogenic fungus Beauveria bassiana (Bals.) Vuillemin. Methods and Results The APPs used were Baicao, Orobor®, Topneem, Rotenat and Compostonat at concentrations recommended by the manufacturers (CR), and t...

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Bibliographic Details
Published in:Journal of applied microbiology 2018-12, Vol.125 (6), p.1802-1811
Main Authors: Potrich, M., Dallacort, S., Luckman, D., Lozano, E.R., Pegorini, C.S., Simionatto, D.
Format: Article
Language:English
Subjects:
alternative phytosanitary products
Beauveria bassiana
Biocompatibility
biological index
Colonies
Conidia
Entomopathogenic fungi
entomopathogenic fungus
Fungi
Germination
Insect control
Insects
Larvae
Natural products
Parameters
Pathogenicity
Pathogens
Toxicity
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Summary:Aims To assess the compatibility of alternative phytosanitary products (APPs) with the entomopathogenic fungus Beauveria bassiana (Bals.) Vuillemin. Methods and Results The APPs used were Baicao, Orobor®, Topneem, Rotenat and Compostonat at concentrations recommended by the manufacturers (CR), and then half (1/2CR) and double (2CR). To evaluate the compatibility, the following parameters were analysed: germination, colony forming units (CFUs), vegetative growth and conidia production. Compatibility was assessed using rates of toxicity and biological index. The association of APPs and B. bassiana was also evaluated for pathogenicity against larvae of third instar Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) (1·0 × 108 conidia per ml). The germination of conidia of B. bassiana was reduced only by the product Orobor®. The CFUs were not affected by any products. The colony diameter was reduced when in contact with the products Baicao and Orobor®. For conidia production per colony, all products reduced this parameter. None of the products affected the pathogenicity of the fungus on A. kuehniella. Conclusions All APPs tested are compatible with B. bassiana. Significance and Impact of the Study The natural products tested and used in the field are considered compatible with B. bassiana under laboratory conditions, making possible new studies and the use of these in insect control.
ISSN:1364-5072
1365-2672
DOI:10.1111/jam.14072