Expression of Sema1aScer\UAS.cJa under the control of Scer\GAL4elav.PLu in embryos does not induce significant increase in axon pathfinding defects relative to controls.
Scer\GAL4elav.PLu, Sema1aUAS.cJa, pblUAS.N.Tag:HA has abnormal neuroanatomy | embryonic stage phenotype, suppressible by PlexAMB09499/plexA[+]
Sema1aUAS.cJa/Scer\GAL4elav.PLu is an enhancer of abnormal neuroanatomy | embryonic stage phenotype of Scer\GAL4elav.PLu, pblUAS.N.Tag:HA
Scer\GAL4elav.PLu, Sema1aUAS.cJa, pblUAS.N.Tag:HA has lateral longitudinal fascicle phenotype, suppressible by PlexAMB09499/plexA[+]
Scer\GAL4elav.PLu, Sema1aUAS.cJa, pblUAS.N.Tag:HA has larval intersegmental nerve branch ISNb of A1-7 phenotype, non-suppressible by PlexAMB09499/plexA[+]
Sema1aUAS.cJa/Scer\GAL4elav.PLu is an enhancer of larval intersegmental nerve branch ISNb of A1-7 | embryonic stage phenotype of Scer\GAL4elav.PLu, pblUAS.N.Tag:HA
Sema1aUAS.cJa/Scer\GAL4elav.PLu is an enhancer of axon | embryonic stage phenotype of Scer\GAL4elav.PLu, pblUAS.N.Tag:HA
Scer\GAL4elav.PLu, Sema1aUAS.cJa, pblUAS.N.Tag:HA has axon | embryonic stage phenotype
Scer\GAL4elav.PLu, Sema1aUAS.cJa, pblUAS.N.Tag:HA has lateral longitudinal fascicle phenotype
The moderate axon pathfinding defects (defasciculation defects in intersegmental nerve b motor axons very infrequent lateral axon tract disruptions in the central nervous system) characteristic for embryos expressing pblScer\UAS.N.T:Ivir\HA1 under the control of Scer\GAL4elav.PLu are strongly exacerbated by co-expression of Sema1aScer\UAS.cJa and in addition, the embryos also display midline crossing defects.
Co-expression of Sema-1aScer\UAS.cJa and pblScer\UAS.N.T:Ivir\HA1 under the control of Scer\GAL4elav.PLu results in ISNb defects in 46.1% of hemisegments. Defects in the lateral-most Fas2-positive longitudinal connectives are seen in 21.6% of hemisegments. An average of 3.6 ectopic midline crossings in the central nervous system are seen per embryo.
plexAMB09499/+ strongly suppresses the lateral longitudinal central nervous system defects seen in embryos co-expressing Sema-1aScer\UAS.cJa and pblScer\UAS.N.T:Ivir\HA1 under the control of Scer\GAL4elav.PLu, while the ISNb defects are not suppressed.
Sema1aUAS.cJa/Scer\GAL4sca-537.4 partially rescues Sema1ak13702
Sema1aUAS.cJa/Scer\GAL4sca-537.4 partially rescues Sema1ak13702
Expression of Sema1aScer\UAS.cJa under the control of Scer\GAL4sca-537.4 strongly rescues the axon guidance defects characteristic for Sema1ak13702 homozygous embryos - the defects in the central nervous system are completely suppressed but the frequency of defasciculation irregularities in the intersegmental nerve b is only partially decreased and remains elevated compared to wild-type controls.
Expression of Sema-1aScer\UAS.cJa under the control of Scer\GAL4sca-537.4 rescues the central nervous system guidance defects and partially rescues the ISNb guidance defects seen in Sema-1ak13702 embryos.