title: Odor coding in a disease-transmitting herbivorous insect, the Asian citrus psyllid.
abstract: Olfactory systems discriminate odorants very efficiently and herbivorous insects use them to find hosts in confounding and complex odor landscapes. The Asian citrus psyllid (ACP), Diaphorina citri, feeds on citrus flush and transmits Candidatus Liberibacter that causes citrus greening disease globally. Here, we perform a systematic analysis of odor detection in the ACP antenna using single-unit electrophysiology of rhinarial plate sensilla to a large panel of odorants from plants. We identify neurons that respond strongly to odorants found in the host citrus plants. Comparisons with the generalist yeast-feeding Drosophila melanogaster and specialist anthropophilic Anopheles gambiae reveal differences in odor-coding strategies for the citrus-seeking ACP. These findings provide a foundation for understanding host-odor coding in herbivorous insects.
authors.affiliation: Department of Entomology, 3401 Watkins Drive, University of California, Riverside, CA 92521, USA.
authors.forename: Iliano V
authors.initials: IV
authors.lastname: Coutinho-Abreu
authors.affiliation: Department of Entomology, 3401 Watkins Drive, University of California, Riverside, CA 92521, USA.
authors.forename: Shane
authors.initials: S
authors.lastname: McInally
authors.affiliation: Department of Entomology, 3401 Watkins Drive, University of California, Riverside, CA 92521, USA.
authors.forename: Lisa
authors.initials: L
authors.lastname: Forster
authors.affiliation: Department of Entomology, 3401 Watkins Drive, University of California, Riverside, CA 92521, USA.
authors.forename: Robert
authors.initials: R
authors.lastname: Luck
authors.affiliation: Department of Entomology, 3401 Watkins Drive, University of California, Riverside, CA 92521, USA.
authors.forename: Anandasankar
authors.initials: A
authors.lastname: Ray
mesh_terms: D000818:Animals; D057506:Arthropod Antennae / Q000502:physiology; D002957:Citrus / Q000382:microbiology* / Q000502:physiology; D004331:Drosophila melanogaster / Q000502:physiology; D006430:Hemiptera / Q000382:microbiology* / Q000502:physiology*; D060434:Herbivory; D008297:Male; D009812:Odorants / Q000032:analysis; D010935:Plant Diseases / Q000382:microbiology*; D012903:Smell
keywords: Asian citrus psyllid; antenna; herbivore insect; odorants