Very few zfh165.34 mutant cyst progenitor cell clones are recovered compared to controls. Germline stem cell clones are recovered at similar levels to controls.
Mutant embryos have mild defects in the development of the tracheal dorsal trunk.
Germ cells in mutant embryos do not successfully navigate to the somatic gonadal precursors (SGPs): the majority of the germ cells do not attach to the SGPs at stage 11. Germ cells migrate past their target mesodermal cells, into posterior or ectodermal regions. Occasionally small gonads may form. Embryos derived from homozygous germline clones develop normally as long as a wild-type copy of zfh1 is zygotically provided. The germ cell migration phenotype is not exacerbated when the embryos are derived from a zfh1 homozygous mutant germline. Germ cells are unable to transfer between germ layers in double mutant embryos with tin (Df(3R)GC14). Most germ cells adhere to the endoderm throughout embryogenesis, some scatter near the gut at late stages.
zfh165.34 has embryonic/larval tracheal dorsal trunk phenotype, enhanceable by tinEC40
zfh165.34 is an enhancer of embryonic/larval tracheal dorsal trunk phenotype of tinEC40
The addition of tinEC40 to mutants leads to a tracheal dorsal trunk that is almost completely absent.
Germ cell migration phenotype is rescued by heat induced ectopic expression of zfh1hs.PL.