Abstract: 【Aim】 This study aims to establish the adult antennal transcriptome database of Diaphania glauculalis and mine chemosensory-related genes, so as to provide a theoretical basis for the chemosensory mechanism of adult antenna of D. glauculalis, and green prevention and control technology. 【Methods】 The antennal transcriptome of D. glauculalis adults was sequenced using an Illumina NovaSeq 6000 platform. The raw data were edited using Trimmomatic and Trinity and assembled to obtain transcriptome data. The transcriptome data were compared to CDD, KOG, COG, NR, NT, PFAM and KEGG databases to obtain gene annotation information and identify the chemosensory-related genes. The expression levels of the chemosensory-related genes were assessed using TPM (transcripts per million). The phylogenetic tree of the chemosensory-related genes of D. glauculalis was constructed using the maximum likelihood method. 【Results】A total of 52 705 124 unigenes were obtained from the male adult antennal transcriptome of D. glauculalis and 55 391 610 unigenes from the female adult antennal transcriptome. By comparing the annotation with NR database, 24 192 unigenes were annotated, among them, the most (10 679) homologous sequences were from Ostrinia furnacalis. There were 14 313 unigenes annotated to 204 289 GO functional entries, including 113 387 unigenes annotated to biological processes, 70 115 unigenes annotated to cellular components, and 20 787 unigenes annotated to molecular functions. There were 10 721 unigenes annotated to 11 968 functional entries in 25 classifications of the KOG database. There were 12 892 unigenes annotated to five categories of metabolic pathways in the KEGG database, attributed to 33 pathways, with the largest number of unigenes (1 500) annotated to signal transduction pathways. A total of 136 chemosensory-related genes were identified, including 31 odorantbinding protein (OBP) genes, 24 chemosensory protein (CSP) genes, 50 odor receptor (OR) genes, 20 ionotropic receptor (IR) genes, nine gustatory receptor (GR) genes and two sensory neuron membrane protein (SNMP) genes. 【Conclusion】 In this study, we constructed the antennal transcriptome database of D. glauculalis adults for the first time, and elaborated the types and number of chemosensory-related genes. This study lays the molecular foundation for the functional analysis of chemosensory genes of D. glauculalis and olfactory sensory mechanism, and then provides theoretical support for the development of new green control technologies based on insect olfactory sensory mechanism.

Key words: Diaphania glauculalis, antenna, transcriptome, chemosensoryrelated genes, bioinformatics