No synaptic morphological defects are observed in the VA1v ORNs in Srpk79DP10036/+ heterozygous adults.
Electron micrographs reveal that srpk79DP10036 mutant motor axons contain large, highly organised electron-dense structures that are never found in wild-type axons. Often, these electron dense structures appear strikingly similar to cytoplasmic protrusions known as T-bars that has been joined at their "bases" into a large T-bar aggregate.
Srpk79DP10036/Scer\GAL4peb-GAL4 is a suppressor of abnormal neuroanatomy | adult stage phenotype of Lrp4dalek
Lrp4dalek, Srpk79DP10036/Srpk79D[+] has abnormal neuroanatomy phenotype
Srpk79DP10036/Scer\GAL4peb-GAL4 is a suppressor of adult olfactory receptor neuron phenotype of Lrp4dalek
Srpk79DP10036/Scer\GAL4peb-GAL4 is a suppressor of synapse | adult stage phenotype of Lrp4dalek
Srpk79DP10036/Scer\GAL4peb-GAL4 is a suppressor of presynaptic active zone | adult stage phenotype of Lrp4dalek
Lrp4dalek, Srpk79DP10036/Srpk79D[+] has synapse | adult stage phenotype
Lrp4dalek, Srpk79DP10036/Srpk79D[+] has adult olfactory receptor neuron phenotype
Lrp4dalek, Srpk79DP10036/Srpk79D[+] has presynaptic active zone | adult stage phenotype
Neither Lrp4dalek/+ nor Srpk79DP10036/+ single heterozygous adults display any defects in the synapse morphology in the VA1v olfactory receptor neurons but in Lrp4dalek/+;Srpk79DP10036/+ double heterozygotes the synapse number (assessed by counting active zone marker puncta) is significantly decreased compared to controls.
The reduced active zone number in the VA1v olfactory receptor neurons observed in Lrp4dalek homozygous mutants is restored by expression of Srpk79DP10036 under the control of Scer\GAL4peb-GAL4 in the mutant background.