Drives expression in sugar-sensing neurons of the larval dorsal, posterior, and ventral pharyngeal sense organs; and in sugar-sensing neurons of a small number of taste bristles in the tarsus.
ScerGAL4Gr43a-GAL4 drives expression in around four cells of the larval pharyngeal sense organ projecting to the embryonic/larval subesophageal ganglion.
ScerGAL4Gr43a-GAL4 drives strong expression in two S cells in the middle segment of the prothoracic tarsal segment 5 and weak expression in two S cells at the tip of this segment. A total of 4 neurons are labelled in the adult proventriculus, 2 extend axons to the subesophageal ganglion and 2 to muscles of the mid gut, all 4 extend dentrites in the foregut lumen.
Inhibition (using Hsap\KCNJ2UAS.EGFP) of Scer\GAL4Gr43a-GAL4 cells in adults does not significantly affect preference for sucrose, compared to controls.
Optogenetic activation (using Crei\ChR1::Vcar\ChR1::Vcar\ChR2ReaChR.UAS.Citrine with orange light) of the combined set of Scer\GAL4Gr28b.b.4.7 and Scer\GAL4Gr43a-GAL4 cells, but not Scer\GAL4Gr43a-GAL4 cells alone, in adults significantly increases food intake of satiated flies, compared to controls, but this is to a significantly reduced extent compared to Scer\GAL4Gr28b.b.4.7 cells alone.
Inhibition (using shits1.IVS.p10.20xUAS at 33[o]C) of a subset of Scer\GAL4Gr43a-GAL4 cells (restricted using Scer\GAL80ChAT.7.4P) in adults during training significantly reduces long-term, but not short-term, associative appetitive (sugar) olfactory memory, compared to controls.
Larvae in which neural transmission has been blocked in the Scer\GAL4Gr43a-GAL4-expressing cells in the brain show a normal preference for fructose but do not show the usual preference for glucose and sorbitol.
Scer\GAL80ChAT.7.4P, Scer\GAL4Gr43a-GAL4, Gr43aUAS.cMa partially rescues Gr43aGAL4