Df(3R)d189 homozygotes or Df(3R)d189/Df(3R)P14 animals in which the function of all genes affected by Df(3R)d189 except Ada2a have been rescued using P{CaSpeR4-Dtl+Rpb4+} are either late-larval of early-pupal lethals. The animals follow a seemingly normal course of development until the third larval instar stage, but approximately a quarter of them (27%) never pupate. Three quarters (73%) form prepupae, which are similar to larvae in shape, are covered with a brownish cuticle, and die at this stage.
Females with Df(3R)d189/Df(3R)P14 P{CaSpeR4-Dtl+Rpb4+} germlines are not recovered in experiments transplanting mutant germline cells into host embryos, indicating that Ada2a function is required in the germline.
In disc-derived body-parts, homozygous Ada2ad189 clones (homozygous for Df(3R)d189 with the function of all genes affected by the deficiency except Ada2a having been rescued using P{CaSpeR4-Dtl+Rpb4+}) develop as frequently as control clones, but are significantly smaller than control clones. Homozygous clones on the abdomen are as large as control clones.
Ada2ad189 is rescued by Scer\GAL4Act.PU/Ada2aUAS.cVa
Ada2ad189 is partially rescued by Scer\GAL4Act.PU/Ada2a::Ada2b2bS.2a.UAS
Ada2ad189 is partially rescued by Scer\GAL4Act.PU/Ada2a::Ada2b2bM.2a.UAS
Ada2ad189 is not rescued by Scer\GAL4Act.PU/Ada2bUAS.cVa
Ada2ad189 is not rescued by Ada2a::Ada2b2bL.2a.UAS/Scer\GAL4Act.PU
Ada2ad189 is not rescued by Scer\GAL4Act.PU/Ada2a::Ada2b2a2b.UAS
Expression of Ada2aScer\UAS.cVa under the control of Scer\GAL4Act.PU completely rescues the late third instar larval lethality of Ada2ad189 animals.
Expression of Ada2bScer\UAS.cVa under the control of Scer\GAL4Act.PU fails to rescue the late third instar larval lethality of Ada2ad189 animals.
Expression of either Ada2a::Ada2b2a2b.Scer\UAS or Ada2a::Ada2b2bL.2a.Scer\UAS under the control of Scer\GAL4Act.PU fails to rescue the late third instar larval lethality of Ada2ad189 animals.
Expression of Ada2a::Ada2b2bS.2a.Scer\UAS under the control of Scer\GAL4Act.PU partially rescues the late third instar larval lethality of Ada2ad189 animals; 19% reach the P5 pupal stage and 2% reach the P12 stage.
Expression of Ada2a::Ada2b2bM.2a.Scer\UAS under the control of Scer\GAL4Act.PU partially rescues the late third instar larval lethality of Ada2ad189 animals; 40% reach the P5 pupal stage and 1.9% reach the P12 stage.