Different evolutionary behaviour of P element subfamilies: M-type and O-type elements in Drosophila bifasciata and D. imaii.

@article{Haring1995DifferentEB,
  title={Different evolutionary behaviour of P element subfamilies: M-type and O-type elements in Drosophila bifasciata and D. imaii.},
  author={Elisabeth Haring and Sylvia Hagemann and Wilhelm Pinsker},
  journal={Gene},
  year={1995},
  volume={163 2},
  pages={
          197-202
        }
}
Distribution and variation of two P-element subfamilies designated M-type and O-type elements were investigated in Drosophila bifasciata (Db) and its relatives. PCR screening revealed that full-sized and internally deleted elements of both types occur in three geographic Db strains and in the related species, D. imaii (Di). Molecular analyses indicate differences in the evolutionary behaviour of the two P-element types. Internally deleted M-type elements fall into two size classes present in… 
The phylogenetic position of Drosophila eskoi deduced from P element and Adh sequence data.
PCR screening with primers specific for the T-, M-, and O-type P element subfamilies was performed to investigate the interspecific distribution in 18 species and to reconstruct the phylogenetic
Repeated horizontal transfer of P transposons between Scaptomyza pallida and Drosophila bifasciata
TLDR
Results suggest that the O-type subfamily of D. bifasciata has been received by horizontal transfer from an external source, most probably from the genus Scaptomyza, as has been previously suspected for the M-type family.
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Polymerase chain reaction (PCR) screening for P elements was carried out in 77 species with a primer set highly specific for the M-type subfamily. In the course of this search M-type elements were
A new P element subfamily from Drosophila tristis, D. ambigua, and D. obscura.
TLDR
Sequence comparisons with other P element subfamilies from the obscura group indicate that the T-type elements are most closely related to the terminally truncated P homologues of Drosophila guanche and Dosophila subobscura, and this finding indicates that the clustered P homology must be derived from transpositionally active P elements rather than from an immobile genomic sequence.
Transcription and Splicing Patterns of M- and O-Type P Elements in Drosophila bifasciata, D. helvetica, and Scaptomyza pallida
TLDR
RT-PCR was applied to analyze the splicing patterns of P-element-derived mRNAs in Drosophila bifasciata, D. helvetica, and Scaptomyza pallida and revealed that P elements are transcribed in all species investigated, but not in S. pallida.
Structure and organization of the P element related sequences in Drosophila madeirensis.
TLDR
This work presents several molecular and cytological data in order to elucidate the possible evolutionary origin of the P derivatives of D. madeirensis.
P elements in the saltans group of Drosophila: a new evaluation of their distribution and number of genomic insertion sites.
TLDR
These analyses showed the presence of one to 15 P element insertion sites in species of the saltans group, including Drosophila neocordata and Drosophile emarginata, and suggest that these sequences might be rudimental P element derivatives that were present in the ancestral of the subgenus Sophophora.
Ancient and Recent Horizontal Invasions of Drosophilids by P Elements
TLDR
The results imply that P elements cross species barriers more frequently than previously thought but require a particular genomic environment and thus seem to be confined to a rather narrow spectrum of host species.
Drosophila mediopunctata P elements: a new example of horizontal transfer.
TLDR
It is reported that the P element is present in about three to five copies in the D. mediopunctata genome, the first report of a canonical P element outside the subgenus Sophophora.
Is the Evolutionary History of the O-Type P Element in the saltans and willistoni Groups of Drosophila Similar to That of the Canonical P Element?
TLDR
The findings suggest that the evolutionary history of the O-type subfamily within the saltans and willistoni groups follows the same model proposed for the canonical subfamily of P elements, i.e., events of horizontal transfer between species of the saltan and willISToni groups.
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