Toxicological and Biochemical Description of Synergism of Beauveria bassiana and Emamectin Benzoate against Megalurothrips usitatus (Bagrall)

The prophylactic application of synthetic insecticides to manage Megalurothrips usitatus (Bagrall) has resulted in insecticide resistance and negative impacts upon natural ecosystems. This has driven the need for developing alternative pest control strategies. In the present study, we investigated t...

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Bibliographic Details
Published in:Journal of fungi (Basel) 2022-08, Vol.8 (9), p.916
Main Authors: Zhang, Youdan, Zhang, Xiaochen, Tian, Qingheng, Ali, Shaukat, Tang, Liangde, Wu, Jianhui
Format: Article
Language:English
Subjects:
Acetylcholinesterase
Antioxidants
Beauveria bassiana
Benzoic acid
Bioassays
biopesticides
Catalase
Chemicals
emamectin benzoate
Entomopathogenic fungi
Enzymatic activity
Enzymes
Fungi
Germination
Humidity
Infections
Insecticides
Insects
Laboratories
Megalurothrips
Megalurothrips usitatus
Mortality
Pathogens
Peroxidase
Pest control
Pesticide resistance
Pesticides
Superoxide dismutase
synergism
Virulence
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Summary:The prophylactic application of synthetic insecticides to manage Megalurothrips usitatus (Bagrall) has resulted in insecticide resistance and negative impacts upon natural ecosystems. This has driven the need for developing alternative pest control strategies. In the present study, we investigated the synergistic interaction between the entomopathogenic fungus Beauveria bassiana and the insecticide emamectin benzoate on M. usitatus. The results of our research exhibited that higher doses of emamectin benzoate inhibited the germination rate and colony growth of B. bassiana. The percentage of M. usitatus mortality following B. bassiana and emamectin benzoate treatment indicated a dose–mortality effect. All concentrations of emamectin benzoate combined with different concentrations of B. bassiana demonstrated a synergistic effect five days post-treatment. When B. bassiana and emamectin benzoate were applied alone or in combination, antioxidant enzyme activities, including acetylcholinesterase, catalase, superoxide dismutase, and peroxidase, were significantly lower in M. usiatus than in the controls at the end of the experimental period. The findings of our study confirm the synergistic effect of B. bassiana and emamectin benzoate on M. usitatus, as well as the biochemical process that might be involved in the regulation of the synergistic effect.
ISSN:2309-608X
2309-608X
DOI:10.3390/jof8090916