3.9 kb BglII fragment contains CycJ sequences from 1.1kb upstream of the ATG to 1.9kb downstream of the stop codon.
CycJ+t4 is a suppressor | partially of female sterile phenotype of Df(3L)Exel6095/CycJnull, armi+t6.3, aubHN2/aubQC42
CycJ+t4, arminull has dorsal appendage phenotype, suppressible by lokp6
CycJ+t4, armi+t6.3, Df(3L)Exel6095, CycJnull is a non-enhancer of egg chamber phenotype of Df(2L)BSC145/piwi06843
CycJ+t4 is a suppressor of egg chamber phenotype of Df(3L)Exel6095/CycJnull, armi+t6.3, aubHN2/aubQC42
Co-expression of CG14971t4 does not further enhance the rescue of the Df(3L)armi-J mutant oogenesis defects by CycJ+t4.
Co-expression of CycJ+t4 further enhances the rescue of either Df(3L)armi-J or Df(3L)armi-J/Df(3L)Exel6095 mutant oogenesis defects by armi+t6.3. The hatching rate is improved from 30% to 73-76%.
A CycJnull/Df(3L)Exel6095 mutant background (expressing armi+t6.3 to restore armi[+] function) enhances the oogenesis defects seen in piwi06843/Df(2L)BSC145 mutant females. The frequency of compound egg chambers (multiple cysts in one follicular epithelium) is comparable to that seen in Df(3L)armi-J. Addition of CycJ+t4 decreases the frequency of compound egg chambers to the levels seen in the piwi mutant alone.
CycJnull/Df(3L)Exel6095 (expressing armi+t6.3 to restore armi[+] function) enhances the fertility defects seen in aubHN2/aubQC42 mutant females. The resulting flies lay no eggs and oocyte development is arrested, with egg chambers rarely advancing beyond stage 7-8. Compound egg chambers (multiple cysts in a single follicular epithelium) are seen, and these often include a disorganised layer of follicle cells almost separating two fully developed cysts. This phenotype can be fully suppressed by expression of CycJ+t4.
Expression of CycJ+t4 significantly rescues the oogenesis defects seen in homozygous Df(3L)armi-J females. Females are capable of producing fully developed stage 14 egg chambers and of laying eggs, albeit at a dramatically reduced rate compared to heterozygotes. There is also a dramatic decrease in the frequency of compound egg chambers (multiple cysts in one follicular epithelium) when CycJ+t4 is expressed in Df(3L)armi-J/Df(3L)Exel6095.