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Chemosensory Receptors in the Larval Maxilla of Papilio hospiton

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Chemosensory Receptors in the Larval Maxilla of Papilio hospiton

dc.contributor.author	Crava, M. Cristina
dc.contributor.author	Bobkov, Yuriy V.
dc.contributor.author	Sollai, Giorgia
dc.contributor.author	Anfora, Gianfranco
dc.contributor.author	Crnjar, Roberto
dc.contributor.author	Cattaneo, Alberto Maria
dc.date.accessioned	2022-06-08T16:24:11Z
dc.date.available	2022-06-08T16:24:11Z
dc.date.issued	2022
dc.identifier.citation	Crava, M. Cristina Bobkov, Yuriy V. Sollai, Giorgia Anfora, Gianfranco Crnjar, Roberto Cattaneo, Alberto Maria 2022 Chemosensory Receptors in the Larval Maxilla of Papilio hospiton Frontiers In Ecology And Evolution 9 795994 1 20
dc.identifier.uri	https://hdl.handle.net/10550/83089
dc.description.abstract	Among the butterflies of the genus Papilio (Lepidoptera: Papilionidae), Papilio hospiton (Géné) has a geographical distribution limited to the Mediterranean islands of Sardinia (Italy) and Corsica (France). This is mainly due to the host range that includes only a few plant species of Apiaceae and Rutaceae growing on these islands. In a previous electrophysiological investigation conducted on the maxillary gustatory system of larvae of P. hospiton and its closely phylogenetically related species Papilio machaon, a significantly higher spike activity was shown for the gustatory neurons of lateral and medial styloconic sensilla in P. hospiton when bitter compounds were tested. This effect was possibly correlated to the limited host choice range for P. hospiton. To shed light on the molecular aspects of this phenomenon, we investigated the expression pattern of sensory-related sequences by conducting a transcriptomic analysis from total RNA isolates of P. hospiton larval maxillae. We identified several transcripts that may be involved in taste (one gustatory receptor, one divergent ionotropic receptor, and several transient receptor potential channels, TRPs) as well as transcripts supporting an olfactory function for this appendage, including odorant receptors (ORs), antennal ionotropic receptors (A-IRs), sensory neuron membrane proteins (SNMPs), and odorant-binding proteins (OBPs). We used Human Embryonic Kidney (HEK293A) cells to heterologously express two of the identified receptors, PhospOR1 and PhospPain, together with their orthologs from P. machaon, for functional characterization. While our data suggest no activation of these two receptors by the ligands known so far to activate the electrophysiological response in larval maxillary neurons of Papilio species, nor temperature activation of both Papilio TRPA-channel Painless, they represent the first attempt in connecting neuronal activity with their molecular bases to unravel diet specialization between closely related Papilio species.
dc.language.iso	eng
dc.relation.ispartof	Frontiers In Ecology And Evolution, 2022, vol. 9, num. 795994, p. 1-20
dc.subject	RNA
dc.subject	Societats d'insectes
dc.subject	Receptors sensitius
dc.title	Chemosensory Receptors in the Larval Maxilla of Papilio hospiton
dc.type	journal article	es_ES
dc.date.updated	2022-06-08T16:24:12Z
dc.identifier.doi	10.3389/fevo.2021.795994
dc.identifier.idgrec	153848
dc.rights.accessRights	open access	es_ES