Horizontal transfer of P elements and other short inverted repeat transposons

  title={Horizontal transfer of P elements and other short inverted repeat transposons},
  author={Margaret G. Kidwell},
Evidence for horizontal transfer of the P family of transposable elements in the genus Drosophila is reviewed and evaluated, along with observations consistent with the recent invasion of Drosophila melanogaster by these elements. Some other examples of horizontal transfer involving other groups of transposable elements having short inverted terminal repeats are also briefly described. The sequential mechanistic steps likely to be involved in a horizontal transfer event are explored, including… 

Factors that affect the horizontal transfer of transposable elements.

There appears to be a gradient in the incidence of horizontal transfer that reflects the presence of DNA intermediates during transposition, and horizontal transfer seems to predominate among families for which copy number is controlled predominantly by self-regulatory mechanisms that limit transposition.

Pervasive Horizontal Transfer of Rolling-Circle Transposons among Animals

The first evidence for the repeated HT of four different families of Helitrons in an unprecedented array of organisms, including mammals, reptiles, fish, invertebrates, and insect viruses is described.

General survey of hAT transposon superfamily with highlight on hobo element in Drosophila

The hAT transposons, very abundant in all kingdoms, have a common evolutionary origin probably predating the plant-fungi-animal divergence, and their domestication and use as transgenic tools are discussed.

Repeated horizontal transfers of four DNA transposons in invertebrates and bats

It is demonstrated that bats had continuously acquired new DNA elements via HT, which implies that predation on a large quantity of insects might increase bat exposure to HT, and parasite-host interaction might facilitate exchanging of their genetic materials.

P Transposable Elements in Drosophila and other Eukaryotic Organisms.

Surprisingly, the human and zebrafish P element transposase-related THAP9 genes promote transposition of the Drosophila P elementtransposon DNA in human and Drosophile cells, indicating that the TH AP9 genes encode active P element "transposase" proteins.

Evolutionary forces generating sequence homogeneity and heterogeneity within retrotransposon families

Genome projects allow us to sample copies of a retrotransposon sequence family residing in a host genome. The variation in DNA sequence between these individual copies will reflect the evolutionary

Evolution and Horizontal Transfer of a DD37E DNA Transposon in Mosquitoes

The wide distribution of conserved ITmD37Es in mosquitoes and the presence of intact copies suggest that this element may have been recently active, and the comparison of ITmd37E and host mosquito phylogenies shows a lack of congruence.

Abundance, distribution and dynamics of retrotransposable elements and transposons: similarities and differences

It is shown that the traditional division into two classes, based on the transposition mechanisms, becomes less obvious when other factors are taken into consideration, and a great diversity in distribution and dynamics within each class is observed.



Evolutionary Dynamics of Transposable Elements in Prokaryotes and Eukaryotes

It is argued that the pattern of sexual outbreeding seen in mammals and plants is especially favorable to the spread of transposons and that the evolutionary origin of sexual conjugation may have been due to selection on transposon-encoded genes.

Evidence for horizontal transmission of the P transposable element between Drosophila species.

An extensive survey of the genus Drosophila using Southern blot analysis showed that P-homologous sequences are essentially confined to the subgenus Sophophora, and suggested that D. willistoni may have served as the donor species in the horizontal transfer of P elements to D. melanogaster.

Evolution and extinction of transposable elements in Mendelian populations.

Results indicate that, if the mutant can be transposed equally well in the presence of the wild type, then it can be expected to be found in preponderance, whereas elements, such as retroviruses, where the transposing genome and its phenotypic expression are coupled, may be characterized by a low mutant frequency.

Evidence for horizontal transmission of the mobile element jockey between distant Drosophila species.

  • L. J. MizrokhiA. Mazo
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1990
The presence of jockey from other sibling species of the D. melanogaster group jockey was detected only in the distantly related species Drosophila funebris, and cloning and sequencing of this element from D.funebris revealed the existence of the two open reading frames highly similar to those of jockeys fromD.

Apparent absence of transposable elements related to the P elements of D. melanogaster in other species of Drosophila

It is reported that there are no sequences closely enough related to P elements to be detected by DNA hybridization in any other Drosophila species, which supports the hypothesis that P elements have recently invaded D. melanogaster by horizontal transmission.

Sequence of the C. elegans transposable element Tc1.

The complete nucleotide sequence was determined for Tc1, a transposable element in the nematode Caenorhabditis elegans, which contains two long open reading frames on the same DNA strand but in different translational reading frames, suggesting that a single transcript is made.

The transposable element Uhu from Hawaiian Drosophila--member of the widely dispersed class of Tc1-like transposons.

The complete nucleotide sequence of the transposable element Uhu is reported from the vicinity of the alcohol dehydrogenase (Adh) gene of Drosophila heteroneura (an endemic Hawaiian Drosophile) and it is demonstrated that Uhu belongs to a class of transposables elements which includes Tc1 from Caenorhabditis elegans, Barney fromCaenor Habditis briggsae, and HB1 from Drosophon melanogaster.

Sequence identity between an inverted repeat family of transposable elements in Drosophila and Caenorhabditis

It is demonstrated that Tc1 shares sequence identity in its open reading frame and terminal repeats with a new transposable element Barney (also known as TCb1-Transposon Caenorhabditis briggsae 1).

Possible horizontal transfer of Drosophila genes by the mite Proctolaelaps regalis

Southern blot hybridization, polymerase chain reaction (PCR) amplification, and DNA sequencing showed that samples of P. regalis associated with a P strain of D. melanogaster carried P element sequences, which have potentially important evolutionary implications for improved detection of some host-parasite and predator-prey relationships.