The spermatocyte-specific βTub85D promoter drives expression of Btau\PI4KB.
Btau\PI4KBβTub85D.PP is a suppressor of male sterile phenotype of Df(3L)7C/fwd3
Btau\PI4KBβTub85D.PP is a suppressor of abnormal meiotic cell cycle phenotype of Df(3L)7C/fwd3
Btau\PI4KBβTub85D.PP is a suppressor of abnormal cytokinesis phenotype of Df(3L)7C/fwd3
Btau\PI4KBβTub85D.PP is a suppressor of spermatid phenotype of Df(3L)7C/fwd3
Expression of Btau\PI4KBβTub85D.PP fully rescues the cytokinesis defects and infertility of fwd3/Df(3L)7C mutant males.