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Fig. 2 | BMC Biology

Fig. 2

From: A Drosophila female pheromone elicits species-specific long-range attraction via an olfactory channel with dual specificity for sex and food

Fig. 2

Single sensillum recordings (SSR) from neurons expressing Or69a variants. a SSR from ab9A olfactory sensory neurons (OSNs), in D. melanogaster (Canton-S, Zimbabwe) and D. simulans males, which natively express both variants Or69aA and Or69aB. b SSR from ab3A OSNs in D. melanogaster, heterologously expressing Or69aA and Or69aB, together and singly. (a, b) Test panel includes the known most active ligands for Or69a [39] and three aldehydes. Cross-hatched bars indicate compounds tested in the upwind flight assay (Fig. 3). Bars show mean responses and SEM (spikes/s), different letters indicate statistically significant differences for each fly type (P < 0.05; Mann–Whitney test, n = 5 for ab9A, n = 10 for ab3A). c Key ligands for Or69aA, (S)-α-terpineol (1) and (R)-linalool (4), and for or Or69aB, (R)-carvone (8) and Z4-11Al (10). Alignment of these ligands illustrates shared structural motifs. d Or69a locus, where coloured boxes A and B show unique exons and dark boxes show shared exons, generating the transcript variants Or69aA and Or69aB [40], which are co-expressed the same OSNs in ab9A sensilla in D. melanogaster [36, 40]

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