"To identify which activators may mediate a starvation response and which may be more specific to the dietary response, we used two additional transgenic strains in which GFP expression is repressed by starvation, but not affected by bacterial diet (Pgst-4::GFP and PC53A3.2::GFP, Figure S4). We found 37 activators that affect at least one of these transgenes, 12 of which affected both, indicating that they may induce or mediate a starvation rather than dietary response (Table S3). The remaining 109 activators were specific to Pacdh-1::GFP."
Any variation in the characteristic expression of a gene product produced by exogenous DNA that has been introduced into the organism compared to control animals.