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Identification of Candidate Olfactory Genes in Scolytus schevyrewi Based on Transcriptomic Analysis
Xiaofeng Zhu1, Bingqiang Xu1, Zhenjie Qin2
1Key Laboratory of Integrated Pest Management on Crops in Northwestern Oasis, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi, China.
Frontiers in Physiology
|October 21, 2021
Summary
Researchers identified key olfactory genes in the destructive bark beetle, Scolytus schevyrewi, by analyzing antennal transcriptomes. This discovery offers new molecular targets for developing eco-friendly pest management strategies.
Area of Science:
- Entomology
- Molecular Biology
- Pest Management
Background:
- The bark beetle, Scolytus schevyrewi, poses a significant threat to China's fruit industry, particularly in Xinjiang Province.
- Chemical communication is crucial for insect behavior, presenting opportunities for developing targeted pest control methods.
Purpose of the Study:
- To establish antennal transcriptome databases for male and female Scolytus schevyrewi.
- To identify candidate genes involved in chemoreception for future molecular-level research.
Main Methods:
- RNA sequencing (RNA-seq) was employed to generate antennal transcriptome data.
- Bioinformatic analysis was used to assemble and analyze the transcriptomes.
- Semi-quantitative reverse transcription PCR (RT-PCR) validated gene expression levels.
Main Results:
- 47 odorant receptors (ORs), 22 ionotropic receptors (IRs), 22 odorant-binding proteins (OBPs), and 11 chemosensory proteins (CSPs) were identified.
- Specific OBPs (ScosOBP2, ScosOBP18) showed high expression in female antennae.
- Specific CSPs (ScosCSP2, ScosCSP3, ScosCSP5) were exclusively detected in the antennae of both sexes.
Conclusions:
- The identified OBPs and CSPs represent potential molecular targets for Scolytus schevyrewi management.
- This research lays the groundwork for understanding and manipulating chemical communication in this pest species.
