Abstract
RNA N6-methyladenosine (m6A), as the most abundant modification of messenger RNA, can modulate insect behaviors, but its specific roles in aggregation behaviors remain unexplored. Here, we conducted a comprehensive molecular and physiological characterization of the individual components of the methyltransferase and demethylase in the migratory locust Locusta migratoria. Our results demonstrated that METTL3, METTL14 and ALKBH5 were dominantly expressed in the brain and exhibited remarkable responses to crowding or isolation. The individual knockdown of methyltransferases (i.e., METTL3 and METTL14) promoted locust movement and conspecific attraction, whereas ALKBH5 knockdown induced a behavioral shift toward the solitary phase. Furthermore, global transcriptome profiles revealed that m6A modification could regulate the orchestration of gene expression to fine tune the behavioral aggregation of locusts. In summary, our in vivo characterization of the m6A functions in migratory locusts clearly demonstrated the crucial roles of the m6A pathway in effectively modulating aggregation behaviors.
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Acknowledgement
This work was supported by the National Key Research and Development Program of China (2022YFD1400503), the National Natural Science Foundation of China (32102208), Hebei Natural Science Foundation (C2022201042, C2023201075) and Hebei Educational Committee Foundation (BJK2023015). We would like to thank D.G. Liu (Northwest A&F University, China) for critical comments on previous versions of this manuscript.
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Huang, X., Li, Q., Xu, Y. et al. A neural m6A pathway regulates behavioral aggregation in migratory locusts. Sci. China Life Sci. (2024). https://doi.org/10.1007/s11427-023-2476-1
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DOI: https://doi.org/10.1007/s11427-023-2476-1