Nezara viridula (Hemiptera: Pentatomidae) transcriptomic analysis and neuropeptidomics

Area of Science:

• Entomology
• Genomics
• Neurobiology

Background:

• Stinkbugs (Pentatomidae) are significant agricultural pests, with Nezara viridula being particularly abundant in several regions.
• Despite their economic impact, N. viridula remains poorly characterized genetically and physiologically.
• Understanding the neuroendocrine system is crucial for developing effective pest control strategies.

Purpose of the Study:

• To sequence and analyze the complete transcriptome of Nezara viridula adults.
• To identify neuropeptide precursor genes and G-protein coupled receptors in N. viridula.
• To compare the neuropeptide repertoire of N. viridula and Halyomorpha halys with Rhodnius prolixus.

Main Methods:

• Transcriptome sequencing and analysis of adult male and female Nezara viridula.
• Liquid chromatography-tandem mass spectrometry (LC-MS/MS) for mature neuropeptide identification in brain extracts.
• Comparative analysis of neuropeptide precursor genes with Halyomorpha halys genome and Rhodnius prolixus data.

Main Results:

• The complete transcriptome of N. viridula was sequenced and analyzed.
• Neuropeptide precursor genes and G-protein coupled receptors were identified.
• Mature neuropeptides were detected in N. viridula brain extracts.
• Comparative analysis revealed both conserved and unique features in pentatomid neuropeptide repertoires.

Conclusions:

• This study provides a foundational genetic resource for Nezara viridula, focusing on its neuroendocrine system.
• The identified neuropeptides and receptors offer potential targets for future pest management interventions.
• Comparative genomics highlights evolutionary aspects of neuropeptide systems within Heteroptera.