1. Nutrient sensors Current Biology
Tetsuya Miyamoto, Geraldine Wright, Hubert Amrein 
Current Biology 
Volume 23, Issue 9, Pages R369-R373 (May 2013)
DOI: /j.cub
Copyright © 2013 Elsevier Ltd Terms and Conditions

2. Figure 1
A fructose sensor in the Drosophila brain regulates carbohydrate consumption.
Sugars induce feeding as a consequence of their hedonic sweet taste quality, sensed by the taste sensory system. After ingestion and absorption in the gut, a fraction of nutritious carbohydrate is converted into fructose, and brought into circulation. As a consequence, hemolymph fructose levels rise, thereby activating the Gr43a fructose sensor in the brain. If a fly is satiated, this activation leads to a suppression of food intake (counteracting the sweet taste of sugar), while in a hungry fly, it promotes further feeding activity.
Current Biology  , R369-R373DOI: ( /j.cub )
Copyright © 2013 Elsevier Ltd Terms and Conditions