%0 Figure %A Jiang, Xingcong %A Ryl, Miriam %A Krieger, Jürgen %A Breer, Heinz %A Pregitzer, Pablo %D 2018 %T Image_3_Odorant Binding Proteins of the Desert Locust Schistocerca gregaria (Orthoptera, Acrididae): Topographic Expression Patterns in the Antennae.TIF %U https://frontiersin.figshare.com/articles/figure/Image_3_Odorant_Binding_Proteins_of_the_Desert_Locust_Schistocerca_gregaria_Orthoptera_Acrididae_Topographic_Expression_Patterns_in_the_Antennae_TIF/6147023 %R 10.3389/fphys.2018.00417.s003 %2 https://frontiersin.figshare.com/ndownloader/files/11100053 %K locust %K Schistocerca gregaria %K odorant binding protein %K sensilla %K topographic expression %X

Odorant binding proteins (OBPs) enriched in the sensillum lymph are instrumental in facilitating the transfer of odorous molecules to the responsive receptors. In Orthopteran locust species, an in-depth understanding of this important soluble protein family is still elusive. In a previous study, we have demonstrated that the repertoire of locust OBPs can be divided into four major clades (I–IV) on the phylogenetic scale and for representatives of subfamily I-A and II-A a distinct sensilla-specific expression pattern was determined. In this study, by focusing on a representative locust species, the desert locust Schistocerca gregaria, we have explored the antennal topographic expression for representative OBPs of other subfamilies. First, subtypes of subfamily III-A and III-B were exclusively found in sensilla chaetica. Then, a similar expression pattern in this sensillum type was observed for subfamily I-B subtypes, but with a distinct OBP that was expressed in sensilla coeloconica additionally. Moreover, the atypical OBP subtype from subfamily IV-A was expressed in a subpopulation of sensilla coeloconica. Last, the plus-C type-B OBP subtype from subfamily IV-B seems to be associated with all four antennal sensillum types. These results profile diversified sensilla-specific expression patterns of the desert locust OBPs from different subfamilies and complex co-localization phenotypes of distinct OBP subtypes in defined sensilla, which provide informative clues concerning their possible functional mode as well as a potential interplay among OBP partners within a sensillum.

%I Frontiers