# De novo transcriptome assembly of the oak processionary moth Thaumetopoea processionea

## TL;DR

This study creates a transcriptome for the oak processionary moth larvae, identifying genes that may cause allergic reactions.

## Contribution

The paper provides a de novo transcriptomic assembly of OPM larvae across different developmental stages.

## Key findings

- A total of 145,251 transcripts from 99,868 genes were identified in the assembly.
- About 19,600 genes show differential expression between non-allergenic and allergenic stages.
- The assembly is highly complete, as confirmed by benchmarking universal single-copy orthologues.

## Abstract

The oak processionary moth (OPM) (Thaumetopoea processionea) is a species of moth (order: Lepidoptera) native to parts of central Europe. However, in recent years, it has become an invasive species in various countries, particularly in the United Kingdom and the Netherlands. The larvae of the OPM are covered with urticating barbed hairs (setae) causing irritating and allergic reactions at the three last larval stages (L3-L5). The aim of our study was to generate a de novo transcriptomic assembly for OPM larvae by including one non-allergenic stage (L2) and two allergenic stages (L4 and L5). A transcriptomic assembly will help identify potential allergenic peptides produced by OPM larvae, providing valuable information for developing novel therapeutic strategies and allergic immunodiagnostic assays.

Transcriptomes of three larval stages of the OPM were de novo assembled and annotated using Trinity and Trinotate, respectively. A total of 145,251 transcripts from 99,868 genes were identified. Bench-marking universal single-copy orthologues analysis indicated high completeness of the assembly. About 19,600 genes are differentially expressed between the non-allergenic and allergenic larval stages. The data provided here contribute to the characterization of OPM, which is both an invasive species and a health hazard.