P -element distribution in Eurasian populations of Drosophila melanogaster : A genetic and molecular analysis
- 1 August 1985
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 82 (16) , 5418-5422
- https://doi.org/10.1073/pnas.82.16.5418
Abstract
Genetic and molecular investigations were carried out with Eurasian Drosophila melanogaster populations on the P-M system of hybrid dysgenesis. In 27 strains sampled from France to Middle Asia, a clear gradient exists between Western Europe, in which most modern strains are of the Q type, and eastern areas, in which M -cytotype strains predominate. Molecular analysis on individual flies was performed with two complementary probes of the cloned 2.9-kilobase P element. The results provide evidence for a gradually decreasing frequency of P elements from west to east, but the presence of P -homologous sequences has been ascertained in all of the wild M -cytotype populations analyzed. Moreover, some active P elements with GD sterility potential were revealed in the majority of M -cytotype populations when tested with a highly sensitive reference line. The gradual change in distribution of the polymorphic P family in Eurasia is discussed in relation to the structure of the elements together with the theories of P-M evolution and is interpreted as the present invasion of Eurasian populations by these elements.Keywords
This publication has 23 references indexed in Scilit:
- A trans -Acting Product Needed for P Factor Transposition in DrosophilaScience, 1984
- Sequences homologous to P elements occur in Drosophila paulistorum.Proceedings of the National Academy of Sciences, 1984
- The molecular basis of I-R hybrid Dysgenesis in drosophila melanogaster: Identification, cloning, and properties of the I factorCell, 1984
- Apparent absence of transposable elements related to the P elements of D. melanogaster in other species of DrosophilaNature, 1984
- Chemically modified nucleic acids as immunodetectable probes in hybridization experiments.Proceedings of the National Academy of Sciences, 1984
- THE P FAMILY OF TRANSPOSABLE ELEMENTS IN DROSOPHILAAnnual Review of Genetics, 1983
- Structures of P transposable elements and their sites of insertion and excision in the Drosophila melanogaster genomeCell, 1983
- Evolution of hybrid dysgenesis determinants in Drosophila melanogasterProceedings of the National Academy of Sciences, 1983
- The molecular basis of P-M hybrid dysgenesis: The role of the P element, a P-strain-specific transposon familyCell, 1982
- The molecular basis of P-M hybrid dysgenesis: The nature of induced mutationsCell, 1982