Cell fates in the adult abdomen of Drosophila are determined by wingless during pupal development.
wingless activity is required for the patterning of tergites and sternites in the adult abdomen of Drosophila melanogaster. In the absence of wg, tergite and sternite cuticular differentiation is replaced by that of pleura. Temperature shift analysis of a wg temperature-sensitive allele has shown that sensory bristles and tergite/sternite histotype are determined independently and that wg is required between 15 and 20 hr after pupariation for bristle formation. The determination of sensory mother cells at this stage of development was confirmed by expression of the neuralized gene in a subset of the proliferating histoblasts. Ectopic expression of wg leads to the appearance of ectopic bristles and expanded tergite and sternite, indicating that wg expression is sufficient to promote both bristle formation and tergite/sternite differentiation. wg is expressed in the dividing and spreading histoblast population in a restricted pattern which may determine the spatial arrangement of cuticular elements.
Shirras
A D
AD
Division of Biological Sciences, Lancaster University, United Kingdom.
Couso
J P
JP
D000005:Abdomen / Q000196:embryology* / Q000254:growth & development; D000818:Animals; D029721:Drosophila Proteins; D004331:Drosophila melanogaster / Q000196:embryology*; D004742:Enhancer Elements, Genetic; D017344:Genes, Insect; D006720:Homozygote; D006358:Hot Temperature; D007150:Immunohistochemistry; D008025:Ligases; D008675:Metamorphosis, Biological; D009419:Nerve Tissue Proteins / Q000235:genetics; D010641:Phenotype; D010994:Pleura / Q000196:embryology; D011518:Proto-Oncogene Proteins / Q000502:physiology*; D011679:Pupa / Q000196:embryology; D013234:Stem Cells; D013997:Time Factors; D044767:Ubiquitin-Protein Ligases; D051155:Wnt1 Protein
D029721:Drosophila Proteins; D009419:Nerve Tissue Proteins; D011518:Proto-Oncogene Proteins; D051155:Wnt1 Protein; C074622:wg protein, Drosophila; D044767:Ubiquitin-Protein Ligases; C071006:neur protein, Drosophila; D008025:Ligases