Insects have developed sophisticated detoxification systems to protect them from plant secondary metabolites while feeding on plants to obtain necessary nutrients. As an important enzyme in the system, glycosyltransferase 1 (GT1) conjugates toxic compounds to mitigate their harm to insects. However, the evolutionary link between and insect plant feeding remains elusive. In this study, we explored the evolution of across different insect orders and feeding niches using publicly available insect genomes. is widely present in insect species; however, its gene number differs among insect orders. Notably, plant-sap-feeding species have the highest gene numbers, whereas blood-feeding species display the lowest. appear to be associated with insect adaptations to different plant substrates in different orders, while the shift to non-plant feeding is related to several losses of . Most large gene numbers are likely the consequence of tandem duplications showing variations in collinearity among insect orders. These results reveal the potential relationships between the evolution of and insect adaptation to plant feeding, facilitating our understanding of the molecular mechanisms underlying insect-plant interactions.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11173166PMC
http://dx.doi.org/10.3390/ijms25116080DOI Listing

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