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Rapid Detection of Philaenus italosignus Drosopoulos & Remane, 2000 (Hemiptera: Aphrophoridae) with Real-Time PCR Probe LNA Technology
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Rapid Detection of Philaenus italosignus Drosopoulos & Remane, 2000 (Hemiptera: Aphrophoridae) with Real-Time PCR Probe LNA Technology
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Rapid Detection of Philaenus italosignus Drosopoulos & Remane, 2000 (Hemiptera: Aphrophoridae) with Real-Time PCR Probe LNA Technology
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Journal Article
Rapid Detection of Philaenus italosignus Drosopoulos & Remane, 2000 (Hemiptera: Aphrophoridae) with Real-Time PCR Probe LNA Technology
2025
Overview
To date, Philaenus spumarius (Linnaeus, 1758), Philaenus italosignus Drosopoulos & Remane, 2000, and Neophilaenus campestris (Fallén, 1805) are proven vectors of the phytopathogenic bacterium Xylella fastidiosa Wells et al., 1987 in Europe. Currently, the identification of these three species relies on the well-documented status of morphological and taxonomical characters, making the discrimination of vector adult males possible by genitalia comparison. This study updates the biomolecular diagnostic tests with a rapid identification tool for P. italosignus, using locked nucleic acid (LNA) probe technology. The test also overcomes the difficulties associated with the morphological identification of females and juveniles. The morphological α-taxonomic identification of the male, achieved through comparison with the type of the species, retains its primary role in specimen identification for probe building. Later, the proposed assay can contribute to the rapid identification of P. italosignus by the secondary (molecular) identification step. The new LNA qPCR test offers high reliability and reproducibility in the identification of P. italosignus instars, thus improving targeted surveys of X. fastidiosa vector populations and allowing discrimination between species collected in the field. The accurate identification and census of vector individuals, regardless of their gender and instar, enhances the efficacy of Xylella IPM-DSS (Integrated Pest Management Decision Support System) strategies.
