1.5kb deletion in intron 3.
Remodelling of the photoreceptor zona adherens occurs 60h after puparium formation (APF)in ocuvi mutants compared to 44 hours APF in wild type. Photoreceptors exhibit defective elongation along the lens to brain axis. Rhabdomere morphogenesis defects are also seen; on average 1.8 cells per ommatidium harbour a split rhabdomere and 1.2 cells lack a rhabdomere altogether. An increased number of stalk membranes are shorter than 2500nm compared to wild type.
Rhabdomeres are misshapen (they are often split and/or duplicated) and are restricted to the distal-most third of the retina in mutant flies. The organisation of the ommatidia is disrupted.
Rhabdomeres fail to extend more than one-third of the depth of the retina in mutant flies and are often misshapen or duplicated. Ommatidial organisation is disrupted.
The process of rhabdomere initiation has begun in mutant photoreceptor cells at 60 hours after puparium formation (APF), as in wild-type photoreceptors. However, the mutant photoreceptors show clear disorganisation of the initial stages of rhabdomere elaboration. At 72 hours APF, continuing defects in rhabdomere morphogenesis are seen. At 96 hours APF discernible rhabdomere structures are present, but they are smaller than normal and misshapen.
The rhabdomeres of the ocelli in mutant flies show little difference from those in wild-type controls.
The shape of the rhabdomeres of all eight photoreceptor cells is abnormal in ocuvi mutants.
Flies are preferentially attracted to visible light over UV light. Rhabdomeres are disorganised and often appear duplicated. The rhabdomere phenotype becomes progressively worse in more proximal sections, resulting in premature rhabdomere termination. The R8 photoreceptor is frequently abnormally localized. Heterozygotes with oc1 show neither an R-cell nor an ocellar phenotype.
ocuvi has rhabdomere of eye photoreceptor cell phenotype, enhanceable by Pph13hazy
Scer\GAL4oc.1.6, ocuvi has photoreceptor phenotype, suppressible | partially by Kr-h1GD4367, Scer\GAL4oc.1.6
Scer\GAL4oc.1.6, ocuvi has rhabdomere phenotype, suppressible | partially by Kr-h1GD4367, Scer\GAL4oc.1.6
Scer\GAL4oc.1.6, ocuvi has photoreceptor phenotype, suppressible | partially by Kr-h1KK112003, Scer\GAL4oc.1.6
Scer\GAL4oc.1.6, ocuvi has rhabdomere phenotype, suppressible | partially by Kr-h1KK112003, Scer\GAL4oc.1.6
ocuvi has rhabdomere phenotype, suppressible by Hsap\CRXUAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has ommatidium phenotype, suppressible by Hsap\CRXUAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has rhabdomere phenotype, suppressible by Hsap\CRXR90W.UAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has ommatidium phenotype, suppressible by Hsap\CRXR90W.UAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has rhabdomere phenotype, suppressible by Hsap\CRXI138fs48.UAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has ommatidium phenotype, suppressible by Hsap\CRXI138fs48.UAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has rhabdomere phenotype, suppressible by Scer\GAL4oc.1.6/Hsap\CRXE80A.UAS.Tag:FLAG
ocuvi has ommatidium phenotype, suppressible by Scer\GAL4oc.1.6/Hsap\CRXE80A.UAS.Tag:FLAG
ocuvi has rhabdomere phenotype, suppressible by Hsap\OTX1UAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has ommatidium phenotype, suppressible by Hsap\OTX1UAS.Tag:FLAG/Scer\GAL4oc.1.6
ocuvi has rhabdomere phenotype, suppressible by Scer\GAL4oc.1.6/Hsap\OTX2UAS.Tag:FLAG
ocuvi has ommatidium phenotype, suppressible by Scer\GAL4oc.1.6/Hsap\OTX2UAS.Tag:FLAG
ocuvi has rhabdomere phenotype, non-suppressible by Scer\GAL4oc.1.6/Hsap\CRXK88N.UAS.Tag:FLAG
ocuvi has ommatidium phenotype, non-suppressible by Scer\GAL4oc.1.6/Hsap\CRXK88N.UAS.Tag:FLAG
ocuvi is an enhancer of rhabdomere of eye photoreceptor cell phenotype of Pph13hazy
Pph13hazy, ocuvi has eye photoreceptor cell phenotype
Pph13hazy, ocuvi has ocellus rhabdomere phenotype
Expression of Kr-h1GD4367 under the control of Scer\GAL4oc.1.6 partially suppresses the apical membrane maturation defects seen in ocuvi mutant photoreceptors. The photoreceptor elongation defects, rhabdomere loss and stalk membrane length are all also partially suppressed.
Expression of Kr-h1KK112003 under the control of Scer\GAL4oc.1.6 partially suppresses the apical membrane maturation defects seen in ocuvi mutant photoreceptors.
The process of rhabdomere initiation has begun in photoreceptor cells at 60 hours after puparium formation (APF) in ocuvi ; Pph13hazy double mutants, as in wild-type photoreceptors. However, the mutant photoreceptors show clear disorganisation of the initial stages of rhabdomere elaboration. At 72 hours APF the defects in rhabdomere morphogenesis in the double mutant are more severe than in either single mutant; the apical rhabdomeric membrane lacks any definable shape and organisation in the double mutant. By 96 hours APF no rhabdomere is recognisable in the double mutants. Instead, there is a region of apical membrane that extends out into the inter-rhabdomeral space in distal portions of the retina, but this membrane lacks any organised structure. This membrane structure is visible along the entire length of the photoreceptor cell. No photoreceptor cell structures can be discerned beyond approximately 20μm from the surface of the retina, compared with 100μm for a wild-type photoreceptor cell.
ocuvi ; Pph13hazy double mutants lack rhabdomeres in the ocelli photoreceptor cells.
Expression of Hsap\OTX1Scer\UAS.T:Zzzz\FLAG or Hsap\OTX2Scer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4oc.1.6 rescues rhabdomere elongation in ocuvi flies (so that the rhabdomeres extend the entire depth of the retina in the rescued animals). However, misshapen rhabdomeres are seen in the rescued flies and ommatidia are frequently disorganised.
Expression of Hsap\CRXScer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4oc.1.6 rescues rhabdomere elongation in ocuvi flies (so that the rhabdomeres extend the entire depth of the retina in the rescued animals). Almost all ommatidia form well-organised trapezoids.
Expression of Hsap\CRXK88N.Scer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4oc.1.6 does not rescue rhabdomere or ommatidial morphology in ocuvi flies.
Expression of either Hsap\CRXR90W.Scer\UAS.T:Zzzz\FLAG or Hsap\CRXI138fs48.Scer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4oc.1.6 largely rescues rhabdomere and ommatidial morphology in ocuvi flies.
Expression of Hsap\CRXE80A.Scer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4oc.1.6 partially rescues rhabdomere and ommatidial morphology in ocuvi flies.
ocuvi is rescued by Scer\GAL4oc.1.6/ocUAS.Tag:FLAG
ocuvi is rescued by Scer\GAL4oc.1.6/ocUAS.FL
ocuvi is rescued by Scer\GAL4oc.1.6/ocΔN.UAS
ocuvi is partially rescued by ocΔC.UAS/Scer\GAL4oc.1.6
ocuvi is partially rescued by ocΔNC.UAS/Scer\GAL4oc.1.6
ocuvi is partially rescued by Scer\GAL4oc.1.6/ocΔA.UAS
ocuvi is partially rescued by Scer\GAL4oc.1.6/ocΔB.UAS
ocuvi is partially rescued by Scer\GAL4oc.1.6/ocΔAB.UAS
ocuvi is partially rescued by ocΔABC.UAS/Scer\GAL4oc.1.6
ocuvi is partially rescued by Scer\GAL4oc.1.6/ocHD.UAS
Expression of ocScer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4oc.1.6 rescues rhabdomere elongation in ocuvi flies (so that the rhabdomeres extend the entire depth of the retina in the rescued animals). The rescued rhabdomeres have normal morphology and ommatidial organisation is wild type.
Expression of ocScer\UAS.FL or ocΔN.Scer\UAS under the control of Scer\GAL4oc.1.6 rescues rhabdomere elongation and ommatidial organisation in ocuvi flies.
Expression of either ocΔC.Scer\UAS, ocΔNC.Scer\UAS, ocΔA.Scer\UAS, ocΔB.Scer\UAS, ocΔAB.Scer\UAS or ocΔABC.Scer\UAS under the control of Scer\GAL4oc.1.6 partially rescues rhabdomere elongation and ommatidial organisation in ocuvi flies.
Expression of ocHD.Scer\UAS under the control of Scer\GAL4oc.1.6 weakly rescues rhabdomere elongation and ommatidial organisation in ocuvi flies.
Almost complete rescue of ocuvi phenotypes is seen after five successive heat shocks before 48 hours after puparium formation (APF). The rhabdomeres appear normal in shape and are not split. Heat shocks later than 48 hours APF fail to rescue the rhabdomeric defects.