Results for “Thripidae”

PubMed2026

Characterization and analysis of the full-length transcriptome of Frankliniella occidentalis (Thysanoptera: Thripidae).

BACKGROUND: Frankliniella occidentalis, an insect belonging to the order Thysanoptera, causes severe damage to agricultural and horticultural crops, resulting in significant economic losses worldwide. The development of molecular and sequencing technologies has helped elucidate the molecular mechanisms regulating its growth and development as well as its damaging activity. However, much remains to be explored. To further investigate the molecular complexity of this species, we sequenced the full-length transcriptome of mixed samples obtained from specimens at all developmental stages. RESULTS: Of all transcripts, 89.04% matched with the reference genome; additionally, 29,750 alternative splicing events, 2,342 genes with poly(A) sites, and 153 candidate fusion transcript events were identified, and 4,235 long noncoding RNAs were discovered. CONCLUSIONS: This is the first full-length transcriptome of F. occidentalis reported to date. This study greatly contributes to the understanding of the molecular complexity and diversity of this insect, providing a basis to develop specific molecular targets as well as resources for gene function studies in other insects.

Animals↗

PubMed2026

First complete mitochondrial genome of Uzelothrips scabrosus (Thysanoptera: Uzelothripidae) provides insights into gene rearrangements and phylogenetic position within Terebrantia.

The family Uzelothripidae is represented by a single genus Uzelothrips and can be distinguished from others by the presence of whip-like antennae, a circular ventral sensorium on antennal segment III, a well-developed tentorium, and a membranous ovipositor. Here, we generated the first complete mitochondrial genome of Uzelothrips scabrosus (15,674 bp) using next-generation sequencing to explore the gene rearrangements and phylogenetic relationships. It consists of 13 protein-coding genes, 22 transfer RNAs, two ribosomal RNAs, and two putative control regions. The genome exhibits strong AT bias (71.35%) with negative AT and GC skew. Codon usage analyses indicate a strong bias towards A/U-ending codons and influenced by both natural selection and mutation pressure. All PCGs were under purifying selection, with cox1 being the most conserved and nad4L the most variable. The gene order of the family Uzelothripidae is highly rearranged compared to the ancestral insect gene order. Comparative analysis revealed that gene block B was the most widely conserved, whereas the remaining gene blocks exhibited family or lineage-specific conservation patterns, reflecting extensive mitochondrial gene rearrangements during the evolution of the Thysanoptera. Moreover, 228 synapomorphic and 68 autapomorphic gene boundaries were identified across thysanopteran mitogenomes. Phylogenies indicated that the family Uzelothripidae is in a sister relationship with Stenurothripidae, and the Uzelothripidae + Stenurothripidae clade is sister to Thripidae. This study provides the first mitogenomic insights into Uzelothripidae and highlights the need for broader taxon sampling and nuclear genomic data to resolve deep evolutionary relationships within Thysanoptera.

Comparative analysis↗