Deletion of approximately 250bp, approximately 0.8kb from the site of the P{ry11}staury9 insertion.
Heterozygous stau2 flies show normal 1-d memory after spaced or massed training.
Ooplasmic streaming is normal at stage 9 and stage 10b in mutant oocytes.
In stau2 embryos the NB6-4T-derived are present in most glial cell, one cell is missing in the remaining cases.
Prevents the posterior accumulation of G-iα65A protein.
hts RNA localization proceeds normally in embryos derived from stau mutant mothers.
stau2;6xP{osk+108} embryos exhibit a class of embryos with abdominal deletions typical of posterior group mutations.
Absence of posterior pole plasm, polar granules and pole cells.
Embryos laid by stau2 homozygous mothers form a bcd gradient in the anterior region of the embryo, this partial mislocalization leads to a shallower protein gradient.
Slight reduction of the anteriormost region and defects in abdomen development. bcd protein levels are 50% that of wild type embryos.
strong allele
stau2 has abnormal memory phenotype, enhanceable by Fmr13/Fmr1[+]
stau2/stau[+] is an enhancer of abnormal memory phenotype of Fmr13
stau2 is an enhancer of abnormal neuroanatomy phenotype of Hsap\ATXN8OSCTG112.UAS, Scer\GAL4GMR.PF
stauΔdRBD5.αTub67C.Tag:MYC/stau2 is a suppressor of visible | homeotic phenotype of miraαTub67C.mGFP6
stau2 has embryonic abdomen phenotype, enhanceable by nebMot
oskΔBRE, stau2 has ventral denticle belt phenotype, suppressible by stauΔdRBD5.αTub67C.Tag:MYC
oskΔBRE, stau2 has embryonic epidermis phenotype, suppressible by stauΔdRBD5.αTub67C.Tag:MYC
stau2 has phenotype, suppressible by stau::Mdoa\stauDmMd.αTub67C.Tag:MYC
stau2/stau[+] is an enhancer of ventral denticle belt | germline clone phenotype of Ge-1Δ5
stau2 is an enhancer of ommatidium phenotype of Hsap\ATXN8OSCTG112.UAS, Scer\GAL4GMR.PF
stau2 is an enhancer of embryonic abdomen phenotype of nebMot
stauΔdRBD5.αTub67C.Tag:MYC/stau2 is a suppressor of embryonic abdomen | ectopic phenotype of miraαTub67C.mGFP6
stauΔdRBD5.αTub67C.Tag:MYC/stau2 is a suppressor of embryonic head phenotype of miraαTub67C.mGFP6
stauΔdRBD5.αTub67C.Tag:MYC/stau2 is a suppressor of embryonic thorax phenotype of miraαTub67C.mGFP6
stau2 is a suppressor of embryonic abdomen phenotype of oskΔBRE
stau2 is a suppressor of embryonic abdomen | ectopic phenotype of oskΔBRE
miraαTub67C.mGFP6, stauΔdRBD5.αTub67C.Tag:MYC, stau2 has embryonic abdomen phenotype
miraΔ103.αTub67C.mGFP6, stauΔloop2.αTub67C.Tag:MYC, stau2 has embryonic abdomen phenotype
oskΔBRE, stau2 has abdominal ventral denticle belt phenotype
oskΔBRE, stau2 has embryonic abdomen phenotype
Embryos that express both miraαTub67C.T:Avic\GFP-m6 and stauΔdRBD5.αTub67C.T:Hsap\MYC in a stau2 background show the stauΔdRBD5.αTub67C.T:Hsap\MYC posterior group phenotype in which embryos develop a normal head and thorax, but lack the abdomen.
Embryos that express both miraΔ103.αTub67C.T:Avic\GFP-m6 and stauΔloop2.αTub67C.T:Hsap\MYC in a stau2 background lack a posterior abdomen and form an anterior abdomen with complete reverse polarity.
None of the embryos laid by stau2, oskΔBRE mothers develop a bicaudal phenotype, and almost all form only one abdominal segment at the posterior. stau2, oskΔBRE, stauΔdRBD5.αTub67C.T:Hsap\MYC mothers lay embryos with significantly more abdominal denticle belts than seen in stau2,oskΔBRE alone. A third of embryos laid by stauΔloop2.αTub67C.T:Hsap\MYC, stau2, oskΔBRE mothers develop a bicaudal phenotype, another third show suppression of head development and partial or complete rescue of the abdomen.
Maternal-effect bicaudal phenotype is enhanced if mothers are also mutant for nebMot.
Injection of nosN5 RNA into homozygous embryos completely rescues the abdominal phenotype.
stau2 is rescued by stauΔN.αTub67C.Tag:MYC
stau2 is partially rescued by stauΔdRBD5.αTub67C.Tag:MYC
stau2 is partially rescued by stauΔloop2.αTub67C.Tag:MYC
stau2 is not rescued by staudsRBD3mut
The addition of stauΔdRBD5.αTub67C.T:Hsap\MYC, or stauΔloop2.αTub67C.T:Hsap\MYC to stau2 mothers, produces embryos that show almost no rescue of the stau2 abdominal phenotype. The addition of stauΔN.αTub67C.T:Hsap\MYC, stau::Mdoa\stauDmMd.αTub67C.T:Hsap\MYC, or stauαTub67C.T:Hsap\MYC to stau2 mothers rescues the phenotypes seen in eggs laid by stau2 mothers.
100% of staudsRBD3mut, stau2 embryos die with head defects and no abdomen or pole cells.
hb protein expression in early stau2 mutant embryos has been studied.
Strong allele of stau. Cytoplasmic transplantation of wild type plasm into the abdominal region restores normal abdominal development.
Although tud protein is present in mutant embryo extracts, its localization in the embryo is altered.
Transcripts from oskolc1 behave as those of the endogenous osk gene.