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Ozone reduces lifespan and alters gene expression profiles in Rhyzopertha dominica (Fabricius)

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Abstract

Rhyzopertha dominica is one of the most important stored grain pests that seriously damage rice and wheat. At present, the method of controlling stored grain pests mainly relies on insecticide fumigation. However, the excessive use of pesticides not only leaves pesticide residues, with harmful effects on human health and the environment, but also induces insect resistance. Ozone is a strong oxidant with the characteristics of easy decomposition and without residue. Although ozone has been widely used in the food industry in recent years, research on the control of stored grain pests is limited. In this research, we used ozone treatment to control R. dominica adults and explore the molecular mechanisms that affect them. Here, we found that ozone treatment on R. dominica adults could decrease life span and increase malondialdehyde (MDA) content, as well as reduce activity of total superoxide dismutase (SOD) and catalase (CAT). Using RNA-seq technology, we identified 641 genes that were differentially expressed between ozone-treated and control R. dominica adults [fold-change of ≥ 2 (q-value < 5%)]. When comparing ozone treatment with control R. dominica adults, 330 genes were significantly upregulated and 311 were downregulated. RT-qPCR confirmed that 11 genes were differentially expressed in ozone-treated and control R. dominica adults. These genes were involved in insect cuticle protein and antioxidant system. This research showed that ozone treatment could reduce the lifespan of R. dominica through antioxidant system. It is an environmentally benign method for the control of stored grain pests and has great development potential.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (32102198), the project (2019GYBQGDKFB07, 2020JYBQGDKFA01) in Wuhan Polytechnic University, the Natural Science Foundation of Hubei Province, China (2021CFB195).

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JB and MW took part in methodology, formal analysis, data curation, original draft preparation. XG, HD, YH and ZS carried out review and editing.

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Correspondence to Jie Bi.

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All authors declare that they have no conflict of interest.

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Bi, J., Wen, M., Guo, X. et al. Ozone reduces lifespan and alters gene expression profiles in Rhyzopertha dominica (Fabricius). 3 Biotech 12, 345 (2022). https://doi.org/10.1007/s13205-022-03397-8

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  • DOI: https://doi.org/10.1007/s13205-022-03397-8

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