title: Odorant Receptors of the New Zealand Endemic Leafroller Moth Species Planotortrix octo and P. excessana.
abstract: Moths use their sense of smell to find food sources, mating partners and oviposition sites. For this they possess a family of odorant receptors (ORs). Some ORs are used by both sexes whereas others have sex-specific roles. For example, male moths possess ORs specifically tuned to sex pheromones produced by conspecific females. Here we identify sets of ORs from the antennae of New Zealand endemic leafroller moths Planotortrix octo (48 ORs) and P. excessana (47 ORs) using an RNA-Seq approach. Two orthologous ORs show male-biased expression in the adult antennae of both species (OR7 and OR30) and one other OR in each species was female-biased in its expression (PoctOR25, PexcOR14) by qPCR. PAML analysis conducted on male-biased ORs indicated positive selection acting on the male-biased OR7. The fact that OR7 is likely under positive selection, that it is male-biased in its expression and that its orthologue in C. obliquana, CoblOR7, responds to sex pheromone components also utilised by Planotortrix species, suggests that this receptor may also be important in sex pheromone reception in Planotortrix species.
authors.affiliation: The New Zealand Institute for Plant & Food Research Limited, Auckland, New Zealand.|School of Biological Sciences, University of Auckland, Auckland, New Zealand.|Allan Wilson Centre for Molecular Ecology and Evolution, Auckland, New Zealand.
authors.forename: Bernd
authors.initials: B
authors.lastname: Steinwender
authors.affiliation: The New Zealand Institute for Plant & Food Research Limited, Auckland, New Zealand.
authors.forename: Amali H
authors.initials: AH
authors.lastname: Thrimawithana
authors.affiliation: The New Zealand Institute for Plant & Food Research Limited, Auckland, New Zealand.
authors.forename: Ross
authors.initials: R
authors.lastname: Crowhurst
authors.affiliation: The New Zealand Institute for Plant & Food Research Limited, Auckland, New Zealand.|School of Biological Sciences, University of Auckland, Auckland, New Zealand.|Allan Wilson Centre for Molecular Ecology and Evolution, Auckland, New Zealand.
authors.forename: Richard D
authors.initials: RD
authors.lastname: Newcomb
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D009036:Moths / Q000235:genetics*; D009520:New Zealand; D010675:Pheromones / Q000235:genetics; D010802:Phylogeny; D018035:Receptors, Odorant / Q000235:genetics*; D012724:Sex Attractants / Q000235:genetics; D012903:Smell / Q000235:genetics
chemical_list: D010675:Pheromones; D018035:Receptors, Odorant; D012724:Sex Attractants