Specific features in linear and spatial organizations of pericentromeric heterochromatin regions in polytene chromosomes of the closely related species Drosophila ... View Full Text


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Article Info

DATE

2015-02-27

AUTHORS

Irina Wasserlauf, Konstantin Usov, Gleb Artemov, Tatyana Anan’ina, Vladimir Stegniy

ABSTRACT

Heterochromatin plays an important role in the spatial arrangement and evolution of the eukaryotic genetic apparatus. The closely related species Drosophila virilis (phyla virilis) and D. kanekoi (phyla montana) differ in the amount of heterochromatin along the chromosomes as well as by the presence of the metacentric chromosome 2, which emerged as a result of a pericentric inversion during speciation, in the D. kanekoi karyotype. The purpose of this study was to establish if chromosome rearrangements have any influence on the linear redistribution of centromeric heterochromatin in polytene chromosomes and the spatial organization of chromosomes in the nuclei of nurse cell. We have microdissected the chromocenter of D. virilis salivary gland polytene chromosomes; obtained a DNA library of this region (DvirIII); and hybridized (FISH) DvirIII to the salivary gland and nurse cell polytene chromosomes of D. virilis and D. kanekoi. We demonstrated that DvirIII localizes to the pericentromeric heterochromatin regions of all chromosomes and peritelomeric region of chromosome 5 in both species. Unlike D. virilis, the DvirIII signal in D. kanekoi chromosomes is detectable in the telomeric region of chromosome 2. We have also conducted a 3D FISH of DvirIII probe to the D. virilis and D. kanekoi nurse cell chromosomes. In particular, the DvirIII signal in D. virilis was observed in the local chromocenter at one pole of the nucleus, while the signal belonging to the telomeric region of chromosome 5 was detectable at the other pole. In contrast, in D. kanekoi there exist two separate DvirIII-positive regions. One of these regions belongs to the pericentromeric region of chromosome 2 and the other, to pericentromeric regions of the remaining chromosomes. These results suggest that chromosome rearrangements play an important role in the redistribution of heterochromatin DNA sequences in the genome, representing a speciation mechanism, which, in general, could also affect the chromosome orientation in the 3D nuclear space. More... »

PAGES

331-342

References to SciGraph publications

  • 1999. Nuclear Architecture in GENOMIC IMPRINTING
  • 1984-12. Cytological and linkage maps of Drosophila virilis chromosomes in GENETICA
  • 1986-01. Heterochromatin in mitotic chromosomes of theVirilis species group ofDrosophila in GENETICA
  • 1988-07. Reproducible compartmentalization of individual chromosome domains in human CNS cells revealed by in situ hybridization and three-dimensional reconstruction in CHROMOSOMA
  • 2011-10-08. Molecular genetic analysis of the X-chromosome nuclear envelope attachment region in nurse cells of the malaria mosquitoes Anopheles messeae fall in RUSSIAN JOURNAL OF GENETICS
  • 1939-12. Endomitosis in the nurse cells of the ovary of drosophila melanogaster in CHROMOSOMA
  • 2006-09. Evolutionary significance of chromosome architecture for epigenetic control of eukaryote development and phylogeny in RUSSIAN JOURNAL OF GENETICS
  • 2001-04. Chromosome territories, nuclear architecture and gene regulation in mammalian cells in NATURE REVIEWS GENETICS
  • 2003-09. Chromosome Organization and Differential Banding in Endomitotic Nuclei of Nurse Cells of Calliphora erythrocephala (Diptera: Calliphoridae) in RUSSIAN JOURNAL OF GENETICS
  • 2003-05. Inactivation of Reporter Genes by Cloned Heterochromatic Repeats of Drosophila melanogaster is Accompanied by Chromatin Compaction in RUSSIAN JOURNAL OF GENETICS
  • 2012-02-10. The changes in chromosome 6 spatial organization during chromatin polytenization in the Calliphora erythrocephala Mg. (Diptera: Calliphoridae) nurse cells in PROTOPLASMA
  • 2005-10. Visualization of Chromosome Territories in Interphase Nuclei of Ovarian Nurse Cells in Calliphora erythrocephala Mg. (Diptera: Calliphoridae) in RUSSIAN JOURNAL OF GENETICS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s10709-015-9832-7

    DOI

    http://dx.doi.org/10.1007/s10709-015-9832-7

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1028285205

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/25721230


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    84 nurse cell chromosomes
    85 nurse cell polytene chromosomes
    86 nurse cells
    87 organization
    88 orientation
    89 pericentric inversion
    90 pericentromeric heterochromatin regions
    91 pericentromeric region
    92 peritelomeric region
    93 pole
    94 polytene chromosomes
    95 presence
    96 probe
    97 purpose
    98 rearrangement
    99 redistribution
    100 region
    101 related species Drosophila virilis
    102 results
    103 role
    104 salivary gland polytene chromosomes
    105 salivary glands
    106 separate DvirIII-positive regions
    107 sequence
    108 signals
    109 space
    110 spatial arrangement
    111 spatial organization
    112 speciation
    113 speciation mechanisms
    114 species
    115 species Drosophila virilis
    116 specific features
    117 study
    118 telomeric regions
    119 virilis
    120 virilis salivary gland polytene chromosomes
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