Amino acid replacement: Y279N.
T21778579A
Y279N | tsl-PA; Y279N | tsl-PB; Y279N | tsl-PC
Y279N
Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
embryonic head (with tsl4)
embryonic telson (with tsl4)
filzkorper | embryonic stage | maternal effect (with tslΔ)
telson | embryonic stage | maternal effect (with tslΔ)
Little or no tll expression is detected in the posterior of syncytial or cellular blastoderm embryos, at the anterior the early tll cap does not appear and an abnormal anterior tll stripe appears by the late syncytial blastoderm.
Embryos derived from homozygous females lack the labrum anteriorly, and the head is reduced in size. Posteriorly, A8 and the telson are deleted.
tsl4/tsl3 has embryonic/larval segmentation phenotype phenotype, non-suppressible by gclrev390/gcl[+]
tsl4/tsl3 has embryonic/larval segmentation phenotype phenotype, non-suppressible by gclrev390/gclrev390
tsl4/tsl3 is a suppressor of decreased cell number | recessive | embryonic stage phenotype of gclrev390
tsl[+]/tsl3 is a non-suppressor of decreased cell number | recessive | embryonic stage phenotype of gclrev390
gclrev390, tsl4/tsl3 has increased cell number | embryonic stage phenotype
bcd6, nanosL7, tsl3 has abnormal cell polarity | maternal effect | gastrula stage phenotype
tsl4/tsl3 has embryonic head phenotype, non-suppressible by gclrev390/gcl[+]
tsl4/tsl3 has embryonic telson phenotype, non-suppressible by gclrev390/gcl[+]
tsl4/tsl3 has primordial germ cell | embryonic stage phenotype, non-suppressible by gclrev390/gcl[+]
tsl4/tsl3 has embryonic head phenotype, non-suppressible by gclrev390/gclrev390
tsl4/tsl3 has embryonic telson phenotype, non-suppressible by gclrev390/gclrev390
tsl4/tsl3 has primordial germ cell | embryonic stage phenotype, non-suppressible by gclrev390/gclrev390
tsl4/tsl3 is a suppressor of germline cell | embryonic stage phenotype of gclrev390
tsl[+]/tsl3 is a non-suppressor of germline cell | embryonic stage phenotype of gclrev390
gclrev390, tsl4/tsl3 has primordial germ cell | embryonic stage phenotype
bcd6, nanosL7, tsl3 has embryo | embryonic stage 4 phenotype
The pole-hole phenotype in early embryonic stage and the patterning defects in late embryonic stage (i.e. head and telson defects in cuticle preparations) displayed by tsl3/tsl4 transheterozygotes are not suppressed by gclrev390 heterozygosity or homozygosity.
The decreased primordial germ cells in gclrev390 homozygous early embryos (i.e. mitotic cycles 12/13) is fully suppressed by tsl3/tsl4 transheterozygosity, but not by tsl3 heterozygosity. tsl3/tsl4, gclrev390/+ and tsl3/tsl4, gclrev390/gclrev390 double mutants do not present any obvious defects in either centrosome positioning or cell division of primordial germ cells in the early embryo, as compared to controls.
Embryos derived from bcd6 nosL7 tsl3 triple mutant females have uniform yolk stalk diameters (in contrast to wild type where there are three domains of varying yolk stalk diameter along the anterior-posterior axis of the embryo). The shallow cellularisation front of the anterior domain and the greater depth of the pre-cephalic furrow domain are also lost. Other aspects of cellularisation are normal in these embryos. Nuclear spacing is uniform along the anterior-posterior axis in embryos derived from bcd6 nosL7 tsl3 triple mutant females (in contrast to wild type where there is an anterior domain of lower nuclear density). The larger diameter of the actin caps seen in the anterior of the wild-type embryo in cycle 11 and 12 is not seen in embryos derived from bcd6 nosL7 tsl3 triple mutant females.
A strong allele of tsl.
Allelic series: tsl5 = tsl4 > tsl3 > tsl1 > tsl2