Expression of Pka-C1VDRC.cUa under the control of Scer\GAL4tsh-c724 has no effect on the basal fluid secretion rate from the Malpighian tubules.
Expression of Pka-C1VDRC.cUa under the control of Scer\GAL4c42 results in reduced basal fluid secretion rates from the Malpighian tubules compared to controls.
Pka-C1VDRC.cUa, Scer\GAL4tsh-c724 is a suppressor of Malpighian tubule | conditional phenotype of Besp\bPACUAS.cSa, Scer\GAL4tsh-c724
Co-expression of Pka-C1VDRC.cUa completely abolishes the light-activated stimulation of fluid secretion from the Malpighian tubules which is caused by expression of Zzzz\bPACScer\UAS.cSa under the control of Scer\GAL4tsh-c724.
Animals expressing Zzzz\bPACScer\UAS.cSa under the control of Scer\GAL4c42 and also co-expressing Pka-C1VDRC.cUa show significant stimulation of fluid secretion from the Malpighian tubules in response to low light activation.