Fig 7. AstA protein is required for sugar learning but dispensable for innate sucrose preference.

(A) AstA mutant flies (AstA^SK1, AstA^SK4, and AstA^SK1/SK4) are defective in sugar memory performances. n = 10–32. (B) Sucrose preference of AstA mutant flies are indistinguishable from that of the wild-type strain. n = 8–16. (C-D) AstA knockdown using AstA-GAL4 impairs sugar memory (C, n = 12–16), while leaving sucrose preference intact (D, n = 8). ns, not significant, * p < 0.05, *** p < 0.001.