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September 2, 2026BiologyOpen Access

Genomic Identification and Comparative Characterization of Chemosensory Genes in Two Walnut Pests

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Authors

丹冯丹丹 冯LJLiu Jia-tongCYCai‐qing Yang

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Overview

Comparative genomic analysis reveals distinct chemosensory gene repertoires between generalist and specialist walnut pests, highlighting candidates for targeted pest control strategies.

Key Points

  • To systematically identify and comparatively characterize the chemosensory gene families in two walnut pests with differing feeding strategies, the generalist Conogethes punctiferalis and the specialist Atrijuglans aristata.
  • Applied a unified genome annotation and gene family identification pipeline to the genomes of both species.
  • Identified and classified odorant receptor (OR), gustatory receptor (GR), odorant-binding protein (OBP), and chemosensory protein (CSP) genes.
  • Assessed assembly completeness via BUSCO and evaluated physicochemical properties, chromosomal organization, and phylogenetic relationships.
  • Identified 13,236 protein-coding genes in C. punctiferalis (94.6% BUSCO completeness) and 14,083 in A. aristata (94.5% BUSCO completeness).
  • Cataloged 121 candidate chemosensory genes in C. punctiferalis (46 ORs, 23 GRs, 32 OBPs, 20 CSPs) and 137 in A. aristata (65 ORs, 26 GRs, 28 OBPs, 18 CSPs), with the specialist exhibiting a higher number of ORs.
  • Detected a single conserved coreceptor (ORco) in each species along with three pheromone receptors in C. punctiferalis and four in A. aristata, organized in dispersed and tandem chromosomal arrays.

Cite This Study

冯 et al. (2026) studied this question.

synapsesocial.com/papers/6a97e28dc562ede874ec6b7chttps://doi.org/10.3390/biology15171471
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