Using 3.1 kb upstream from the start codon and 3.1 kb downstream from the stop codon for homologous recombination, the tut coding region was deleted and replaced with 'attP' and 'loxP'.
Mutants exhibit germ cell overgrowth - male germ cells arrest at the spermatogonial transit-amplifying stage and over-proliferate. The testis lacks later germ cells such as spermatocytes.
tut1/tut3 is a suppressor of male germline stem cell phenotype of Scer\GAL4nanos.PU, bamUASp.GFP
Scer\GAL4nos.PU-mediated expression of bamScer\UAS.P\T.T:Avic\GFP in a tut1/tut3 background results in a tut mutant phenotype.
tut1/tut3 is rescued by tutUAS.GFP/Scer\GAL4VP16.bam
tut3 is rescued by tuttutP.GFP
tut1/tut3 is not rescued by tutUAS.GFP/Scer\GAL4tj.PU
Scer\GAL4bam.T:Hsim\VP16-mediated expression, but not Scer\GAL4tj.PU-mediated expression of tutScer\UAS.T:Avic\GFP rescues the testis phenotype of tut1/tut3.
tuttutP.T:Avic\GFP rescues the testis phenotype of tut3.