Characterization of a New Odorant Binding Protein Gene in Gustatory Organs of Manduca sexta Larvae (Lepidoptera: Sphingidae)

Taste plays an essential role in the identification of adequate food sources by insects, including lepidopterans. Characterizing genes that are important to successful transduction of tastants in insects leads to understanding of how tastants can regulate insect behavior. One class of proteins, odor...

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Bibliographic Details
Published in:Annals of the Entomological Society of America 2011-03, Vol.104 (2), p.319-325
Main Authors: Campo, Marta L. Del, Palmer, Samantha, Caillaud, Marina
Format: Article
Language:English
Subjects:
binding proteins
Biological and medical sciences
chemoreception
Fundamental and applied biological sciences. Psychology
genes
GENETICS
host plants
host preference
host preferences
immatures
insect behavior
Insecta
insects
Invertebrates
larvae
Lepidoptera
Manduca sexta
odor compounds
sensilla
sensilla styloconica
Solanaceae
Sphingidae
Systematics. Geographical distribution
taste
tobacco hornworm
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Summary:Taste plays an essential role in the identification of adequate food sources by insects, including lepidopterans. Characterizing genes that are important to successful transduction of tastants in insects leads to understanding of how tastants can regulate insect behavior. One class of proteins, odorant binding proteins (OBPs), have been shown to play a role in olfactory chemotransduction, but their role in taste transduction has been less clear, especially in immature stages of insects. Taste has been shown to be central in host preference by the larva of the tobacco hornworm, Manduca sexta (L.) (Lepidoptera: Sphingidae), and its preferred host plants in the family Solanaceae. We report the discovery of a new OBP gene, Mad10, expressed in the gustatory sensilla styloconica of M. sexta larvae. This is the first time that the expression of an OBP is found in the sensilla styloconica of any lepidopteran.
ISSN:0013-8746
1938-2901
DOI:10.1603/AN10091