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Citation
de Camillis, M.A., Brock, H.W. (1994). Expression of the Polyhomeotic locus in development of Drosophila melanogaster.  Rouxs Arch. Dev. Biol. 203(7-8): 429--438.
FlyBase ID
FBrf0077497
Publication Type
Research paper
Abstract

The polyhomeotic (ph) gene of Drosophila melanogaster encodes a chromatin protein required for negative regulation of homeotic genes, and is a member of the Polycomb group of genes. The distribution of ph mRNA and protein was determined in embryos, imaginal discs, and ovaries. Distribution of ph protein and mRNA coincided, except in early embryogogenesis. During blastoderm, ph mRNA is present in anterior and posterior domains that are themselves subdivided into stripes. During germ band extension, a segmentally repeated striped pattern of mRNA expression is seen. ph protein is first detected as a nuclear protein during cell cycle 10, and is ubiquitously expressed. ph protein stains more heavily in the ectodermal mitotic domains described by Foe (1989). Later, ph mRNA and protein expression is concentrated in the neuronal cell bodies of the central nervous system, and can also be detected in the peripheral nervous system. In imaginal discs, ph expression is non-uniform in metathoracic discs, but appears more regular in other imaginal discs. The ph mRNA is found in the germarium and in stages 1-10 in nurse cells and follicle cells, but we do not detect it in oocytes. These results are discussed with respect to the expression of Polycomb, and with respect to the function of the Polycomb group.

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    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Rouxs Arch. Dev. Biol.
    Title
    Roux's Archives of Developmental Biology
    Publication Year
    1975-1996
    ISBN/ISSN
    0930-035X
    Data From Reference
    Aberrations (1)
    Alleles (2)
    Genes (2)