The microRNAs in the antennae of Apolygus lucorum (Hemiptera: Miridae): Expression properties and targets prediction

Genomics. 2022 Sep;114(5):110447. doi: 10.1016/j.ygeno.2022.110447. Epub 2022 Aug 11.

Abstract

MicroRNAs (miRNAs) regulate gene expression and contribute to numerous physiological processes. However, little is known about the functions of miRNAs in insect chemosensation. In this study, nine small RNA libraries were constructed and sequenced from the antennae of nymphs, adult males, and adult females of Apolygus lucorum. In total, 399 (275 known and 124 novel) miRNAs were identified. miR-7-5p_1 was the most abundant miRNA. Altogether, 69,708 target genes related to biogenesis, membrane, and binding activities were predicted. In particular, 15 miRNAs targeted 16 olfactory genes. Comparing the antennae of nymphs and adult males and females, 94 miRNAs were differentially expressed. Alternatively, a subset of differentially expressed miRNAs was verified by qPCR, supporting the reliability of the sequencing results. This study provides a global miRNA transcriptome for the antennae of A. lucorum and valuable information for further investigations of the functions of miRNAs in the regulation of chemosensation.

Keywords: Apolygus lucorum; Chemosensory-related genes; Small RNA sequencing; Target prediction; miRNAs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Female
  • Heteroptera* / genetics
  • Male
  • MicroRNAs* / genetics
  • Nymph / genetics
  • Reproducibility of Results
  • Transcriptome

Substances

  • MicroRNAs