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Fig. 10 | BMC Biology

Fig. 10

From: Morphological and Transcriptomic Analysis of a Beetle Chemosensory System Reveals a Gnathal Olfactory Center

Fig. 10

Phylogenetic tree of gustatory receptors (GRs). Mid-point rooted tree based on protein sequences from T. castaneum (green branches), D. melanogaster (red branches), and An. gambiae (blue branches). Robustness of the tree topology was evaluated by 100 rapid bootstrap replications. Outer rings represent the expression in antennae and mouthparts (T. castaneum: palps, mandible, labrum, and labium; D. melanogaster: palp and proboscis; An. gambiae: maxillary palp) as log2-fold change compared to body corresponding to the scale in the left lower corner. The scale bars within the trees represent one amino acid substitution per site. Potential sugar receptors (highlighted in yellow), fructose receptors (highlighted in grey), and CO2 receptors (highlighted in orange) are labeled. Known bitter receptors from D. melanogaster are highlighted in green, and the thermos-sensitive GR28bD in light blue. Basically the same figure is available with absolute values instead of fold changes to get an impression of the tissue-specific abundance of the transcripts as Additional file 12: Figure S8. GR gustatory receptor

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