Phenotypic stability of the P-M system in wild populations of Drosophila melanogaster

Access this Article

Search this Article

Author(s)

Abstract

The <i>P</i> element appears to be one of the most recently invaded transposons of <i>D. melanogaster</i>. To study the dynamics and long-term fate of <i>P</i> elements in natural populations of <i>D. melanogaster</i>, 472 isofemale lines newly collected from 27 localities of Japan were examined for the <i>P</i> element-associated characteristics (abilities to induce and repress of <i>P</i> element transposition) and genomic <i>P</i> element composition (size classes and their numbers). There was variation in the <i>P</i> element-related phenotypes among local populations, but genomic <i>P</i> composition did not correlate strongly with the phenotype of each line: full-size <i>P</i> and <i>KP</i> elements predominated in their genomes (<i>FP</i>+ <i>KP</i> predominance). Comparison with previous results suggests a stability in the P-M system in local populations over about 15 years. In some populations, phenotypic stability for particularly long times was found: for 30 years or more <i>Q</i> strains predominated in Hikone and Tanushimaru, <i>P</i> or <i>Q</i> strains around Inakadate, and <i>M</i>' or <i>Q</i> strains around Tozukawa. There was no clear evidence of structural destruction underlying functional variation of <i>P</i> elements during this period. These results suggest that the current evolutionary status of <i>P</i> elements in the gene pool of <i>D. melanogaster</i> is not intermediary stage predicted by the original recent invasion hypothesis, and that several other factors such as the position effect play important roles.<br>

Journal

  • Genes & Genetic Systems

    Genes & Genetic Systems 79(1), 9-18, 2004-02-25

    The Genetics Society of Japan

References:  59

Cited by:  2

Codes

  • NII Article ID (NAID)
    10012907047
  • NII NACSIS-CAT ID (NCID)
    AA11077421
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    13417568
  • NDL Article ID
    6895534
  • NDL Source Classification
    ZR1(科学技術--生物学)
  • NDL Call No.
    Z53-W539
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
Page Top