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Drosophila mediopunctata P Elements: A New Example of Horizontal Transfer
- Source :
- Journal of Heredity. 92:375-381
- Publication Year :
- 2001
- Publisher :
- Oxford University Press (OUP), 2001.
-
Abstract
- Sequences homologous to the P element of Drosophila melanogaster were previously identified in Drosophila mediopunctata, a member of the tripunctata group, subgenus Drosophila. We report here that the P element is present in about three to five copies in the D. mediopunctata genome. While one of the insertion sites appears to be fixed, others may be polymorphic, indicating relatively recent P element activity. Phylogenetic analysis revealed that the D. mediopunctata element belongs to the canonical subfamily of P elements and that divergence of the D. mediopunctata element from other members of this subfamily ranges from 2% to 5% at the nucleotide level. This is the first report of a canonical P element outside the subgenus Sophophora. Based primarily on the striking incongruence between P element and host species phylogenies, the presence of a canonical P element in D. mediopunctata is most likely explained by horizontal transfer between species.
- Subjects :
- Genetics
Sophophora
Subfamily
Gene Transfer, Horizontal
biology
Phylogenetic tree
Gene Dosage
Sequence Analysis, DNA
biology.organism_classification
Polymerase Chain Reaction
P element
Blotting, Southern
Species Specificity
Horizontal gene transfer
DNA Transposable Elements
Animals
Drosophila
Drosophila (subgenus)
Subgenus
Drosophila melanogaster
Molecular Biology
Phylogeny
Genetics (clinical)
Biotechnology
Subjects
Details
- Volume :
- 92
- Database :
- OpenAIRE
- Journal :
- Journal of Heredity
- Accession number :
- edsair.doi.dedup.....dbdaf03e0ef301264113c9abfc32b465