Dscam11 homozygous and Dscam11/Dscam105518 transheterozygous embryonic heart cardioblasts show significant decreases in migration velocity and in filopodial and lamellopodial activities, as compared to controls. Dscam11 heterozygous embryonic heart cardioblasts also show a significant decrease in filopodial activity, but not in lamellopodial activity or migration velocity, as compared to controls.
Dscam1 hemizygous mutants exhibit mild to severe disorganisation of embryonic axon tracts. Breaks in the connectives, predominantly of the outer two fascicles are observed. In addition axon bundles aberrantly cross the midline. Some 53%-58% of Bolwig's nerve (BN) projections are defective in Dscam1 hemizygotes. In half of the "abnormal projections" the entire nerve mistargets, whereas in the remainder only a subset of axons does. Many otherwise normal projections show abnormal expansion of BN terminus at P2.
Dscam105518/Dscam11 has abnormal cell migration | embryonic stage phenotype, non-enhanceable by fra3/fra[+]
Dscam105518/Dscam11 has abnormal cell migration | embryonic stage phenotype, non-enhanceable by robo11/robo1[+]
Dscam1[+]/Dscam11 is a suppressor of abnormal cell migration | dominant | embryonic stage phenotype of robo11
Dscam105518/Dscam11 has lamellipodium | embryonic stage phenotype, enhanceable by fra3/fra[+]
Dscam105518/Dscam11 has embryonic heart cardioblast phenotype, enhanceable by fra3/fra[+]
Dscam105518/Dscam11 has filopodium | embryonic stage phenotype, enhanceable by robo11/robo1[+]
Dscam105518/Dscam11 has lamellipodium | embryonic stage phenotype, enhanceable by robo11/robo1[+]
Dscam105518/Dscam11 has embryonic heart cardioblast phenotype, enhanceable by robo11/robo1[+]
Dscam11 has embryonic heart cardioblast | embryonic stage phenotype, enhanceable by robo11/robo1[+]
Dscam11 has filopodium | embryonic stage phenotype, enhanceable by robo11/robo1[+]
Dscam11 has embryonic heart cardioblast | embryonic stage phenotype, enhanceable by fra3/fra[+]
Dscam11 has filopodium | embryonic stage phenotype, enhanceable by fra3/fra[+]
Dscam105518/Dscam11 has filopodium | embryonic stage phenotype, enhanceable by fra3/fra[+]
Dscam11 has embryonic heart cardioblast | embryonic stage phenotype, suppressible by robo11/robo1[+]
Dscam1[+]/Dscam11 is an enhancer of embryonic heart cardioblast | embryonic stage phenotype of robo11
Dscam1[+]/Dscam11 is an enhancer of filopodium | embryonic stage phenotype of robo11
Dscam1[+]/Dscam11 is an enhancer of lamellipodium | embryonic stage phenotype of robo11
Dscam1[+]/Dscam11 is an enhancer of embryonic heart cardioblast phenotype of fra3
Dscam1[+]/Dscam11 is an enhancer of filopodium | embryonic stage phenotype of fra3
Dscam1[+]/Dscam11 is a suppressor of embryonic heart cardioblast | embryonic stage phenotype of robo11
Dscam1[+]/Dscam11, fra3 has embryonic heart cardioblast phenotype
Dscam1[+]/Dscam11, fra3 has lamellipodium | embryonic stage phenotype
Dscam11, robo11 double heterozygotes show a more severe decrease in filopodial activity compared to either single heterozygote conditions, a more severe decrease in lamellopodial activity compared to robo11 heterozygotes, and no migration velocity defects compared to wild-type controls. Dscam11, fra3 double heterozygotes show a severe decrease in lamellopodial activity compared to wild-type controls and a more severe decrease in filopodial activity compared to either single heterozygote conditions, but do not show significant changes in migration velocity compared to wild-type controls.
The decreased filopodial and lamellopodial activities, but not the decreased migration velocity, observed in Dscam11/Dscam105518 transheterozygous embryonic heart cardioblasts are enhanced by either robo11 or fra3 heterozygosity.