High rate of horizontal transfer of transposable elements in Drosophila

2005 ◽  
Vol 21 (4) ◽  
pp. 200-203 ◽  
Author(s):  
Alejandro Sánchez-Gracia ◽  
Xulio Maside ◽  
Brian Charlesworth
Keyword(s):  
Transposable Elements ◽  
Horizontal Transfer ◽  
High Rate

scholarly journals Truncated Non-Nuclear Transposable Elements in Grapevine: A Mini Review

2019 ◽  
Vol 50 (4) ◽  
pp. 219-227
Author(s):  
A.V. Milovanov ◽  
J. Tello ◽  
U.C.M. Anhalt ◽  
A. Forneck
Keyword(s):  
Gene Transfer ◽  
Mitochondrial Genome ◽  
Transposable Elements ◽  
Vitis Vinifera ◽  
In Silico ◽  
Gene Evolution ◽  
High Rate ◽  
Miniature Inverted Transposable Elements ◽  
High Level ◽  
Inner Region

Abstract In this mini-review we present insight to the non-nuclear transposable elements and in silico analysis of miniature inverted transposable elements (MITEs) in the grapevine mitochondrial genome. Here we report the identification of 17 truncated sequences in grapevine (Vitis vinifera L.) mitochondrial genome which expectedly belongs to the four ancient transposon families (hAT, Tc1Mariner, Mutator and PIF/Harbinger). Some sequences with a high rate of homology in chloroplast and nuclear genomes were also identified. Thus, it suggests the intercellular gene transfer between these three organelles. These partial sequences showed a high level of similitude with full MITE sequences, and they were found in their inner region, supporting their MITE origin. Further analysis revealed these sequences in other life kingdoms (including eubacteria and archaea), which indicates their ancient origin. Further research showed that 13 out of the 17 sequences are conserved domains of the genes where they are located, suggesting their contribution to gene evolution. Therefore, we suppose that more studies of nature, origin and functional meaning of these sequences and their fusion with genes are necessary. In the light of our observations it will be useful for further studies of V. vinifera genome organizing and systematics, as well as for other species.

scholarly journals Transposable Elements and the Evolution of Insects

2021 ◽  
Vol 66 (1) ◽  
pp. 355-372
Author(s):  
Clément Gilbert ◽  
Jean Peccoud ◽  
Richard Cordaux
Keyword(s):  
Transposable Elements ◽  
Related Species ◽  
Horizontal Transfer ◽  
Population Genomics ◽  
Antiviral Immunity ◽  
Closely Related Species ◽  
Phylogenetic Relatedness ◽  
Functional Studies ◽  
Insect Symbionts

Insects are major contributors to our understanding of the interaction between transposable elements (TEs) and their hosts, owing to seminal discoveries, as well as to the growing number of sequenced insect genomes and population genomics and functional studies. Insect TE landscapes are highly variable both within and across insect orders, although phylogenetic relatedness appears to correlate with similarity in insect TE content. This correlation is unlikely to be solely due to inheritance of TEs from shared ancestors and may partly reflect preferential horizontal transfer of TEs between closely related species. The influence of insect traits on TE landscapes, however, remains unclear. Recent findings indicate that, in addition to being involved in insect adaptations and aging, TEs are seemingly at the cornerstone of insect antiviral immunity. Thus, TEs are emerging as essential insect symbionts that may have deleterious or beneficial consequences on their hosts, depending on context.

scholarly journals Birth, School, Work, Death, and Resurrection: The Life Stages and Dynamics of Transposable Element Proliferation

Genes ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 336 ◽  
Author(s):  
Justin P. Blumenstiel
Keyword(s):  
Transposable Elements ◽  
Transposable Element ◽  
Horizontal Transfer ◽  
Evolutionary Dynamics ◽  
Evolutionary Strategies ◽  
Species Boundaries ◽  
Life Stages ◽  
School Work

Transposable elements (TEs) can be maintained in sexually reproducing species even if they are harmful. However, the evolutionary strategies that TEs employ during proliferation can modulate their impact. In this review, I outline the different life stages of a TE lineage, from birth to proliferation to extinction. Through their interactions with the host, TEs can exploit diverse strategies that range from long-term coexistence to recurrent movement across species boundaries by horizontal transfer. TEs can also engage in a poorly understood phenomenon of TE resurrection, where TE lineages can apparently go extinct, only to proliferate again. By determining how this is possible, we may obtain new insights into the evolutionary dynamics of TEs and how they shape the genomes of their hosts.

scholarly journals Methods for detection of horizontal transfer of transposable elements in complete genomes

2012 ◽  
Vol 35 (4 suppl 1) ◽  
pp. 1078-1084 ◽  
Author(s):  
Marcos Oliveira de Carvalho ◽  
Elgion L.S. Loreto
Keyword(s):  
Transposable Elements ◽  
Horizontal Transfer ◽  
Complete Genomes

scholarly journals Mosquito genomes are frequently invaded by transposable elements through horizontal transfer

PLoS Genetics ◽  
2020 ◽  
Vol 16 (11) ◽  
pp. e1008946
Author(s):  
Elverson Soares de Melo ◽  
Gabriel Luz Wallau
Keyword(s):  
Transposable Elements ◽  
Horizontal Transfer ◽  
De Novo ◽  
Mosquito Species ◽  
Wuchereria Bancrofti ◽  
Model Organisms ◽  
Eukaryotic Species ◽  
Horizontal Spread ◽  
Horizontal Transfers

Transposable elements (TEs) are mobile genetic elements that parasitize basically all eukaryotic species genomes. Due to their complexity, an in-depth TE characterization is only available for a handful of model organisms. In the present study, we performed a de novo and homology-based characterization of TEs in the genomes of 24 mosquito species and investigated their mode of inheritance. More than 40% of the genome of Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus is composed of TEs, while it varied substantially among Anopheles species (0.13%–19.55%). Class I TEs are the most abundant among mosquitoes and at least 24 TE superfamilies were found. Interestingly, TEs have been extensively exchanged by horizontal transfer (172 TE families of 16 different superfamilies) among mosquitoes in the last 30 million years. Horizontally transferred TEs represents around 7% of the genome in Aedes species and a small fraction in Anopheles genomes. Most of these horizontally transferred TEs are from the three ubiquitous LTR superfamilies: Gypsy, Bel-Pao and Copia. Searching more than 32,000 genomes, we also uncovered transfers between mosquitoes and two different Phyla—Cnidaria and Nematoda—and two subphyla—Chelicerata and Crustacea, identifying a vector, the worm Wuchereria bancrofti, that enabled the horizontal spread of a Tc1-mariner element among various Anopheles species. These data also allowed us to reconstruct the horizontal transfer network of this TE involving more than 40 species. In summary, our results suggest that TEs are frequently exchanged by horizontal transfers among mosquitoes, influencing mosquito's genome size and variability.

Jumping the fine LINE between species: Horizontal transfer of transposable elements in animals catalyses genome evolution

BioEssays ◽  
2013 ◽  
Vol 35 (12) ◽  
pp. 1071-1082 ◽  
Author(s):  
Atma M. Ivancevic ◽  
Ali M. Walsh ◽  
R. Daniel Kortschak ◽  
David L. Adelson
Keyword(s):  
Transposable Elements ◽  
Genome Evolution ◽  
Horizontal Transfer ◽  
Fine Line

scholarly journals Accumulation of transposable elements in Hox gene clusters during adaptive radiation of Anolis lizards

2016 ◽  
Vol 283 (1840) ◽  
pp. 20161555 ◽  
Author(s):  
Nathalie Feiner
Keyword(s):  
Transposable Elements ◽  
Dna Sequences ◽  
Adaptive Radiation ◽  
Genome Structure ◽  
Gene Clusters ◽  
Genomic Region ◽  
High Rate ◽  
Morphological Adaptations ◽  
Genomic Regions

Transposable elements (TEs) are DNA sequences that can insert elsewhere in the genome and modify genome structure and gene regulation. The role of TEs in evolution is contentious. One hypothesis posits that TE activity generates genomic incompatibilities that can cause reproductive isolation between incipient species. This predicts that TEs will accumulate during speciation events. Here, I tested the prediction that extant lineages with a relatively high rate of speciation have a high number of TEs in their genomes. I sequenced and analysed the TE content of a marker genomic region ( Hox clusters) in Anolis lizards, a classic case of an adaptive radiation. Unlike other vertebrates, including closely related lizards, Anolis lizards have high numbers of TEs in their Hox clusters, genomic regions that regulate development of the morphological adaptations that characterize habitat specialists in these lizards. Following a burst of TE activity in the lineage leading to extant Anolis , TEs have continued to accumulate during or after speciation events, resulting in a positive relationship between TE density and lineage speciation rate. These results are consistent with the prediction that TE activity contributes to adaptive radiation by promoting speciation. Although there was no evidence that TE density per se is associated with ecological morphology, the activity of TEs in Hox clusters could have been a rich source for phenotypic variation that may have facilitated the rapid parallel morphological adaptation to microhabitats seen in extant Anolis lizards.

scholarly journals Temporal stability of P–M cytotype polymorphism in a natural population of Drosophila melanogaster

1987 ◽  
Vol 50 (2) ◽  
pp. 99-103 ◽  
Author(s):  
Hassan Izaabel ◽  
Stephane Ronsseray ◽  
Dominique Anxolabéhère
Keyword(s):  
Drosophila Melanogaster ◽  
Transposable Elements ◽  
Natural Population ◽  
North Africa ◽  
Temporal Stability ◽  
Genetic Load ◽  
Hybrid Dysgenesis ◽  
P Element ◽  
High Rate ◽  
Genetic Abnormalities

SummaryThe P–M system of hybrid dysgenesis in Drosophila melanogaster is a syndrome of genetic abnormalities which appears in the progeny of crosses between strains different with regard to their possession of ‘P’ transposable elements. Cytotype is an extrachromosomal property which regulates the mobility of the P element. We report here data showing that a cytotype polymorphism previously observed in a natural population from North-Africa is stable over a period of 5 years. A potentially high rate of mutation is associated with this cytotype polymorphism. Explanations of the appearance of a cytotype polymorphism are proposed and the consequences for the genetic load induced by transposable elements are discussed.

Sign in / Sign up

Export Citation Format

Share Document