Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids
Abstract Background Several genome duplications have occurred in the evolutionary history of teleost fish. In returning to a stable diploid state, the polyploid genome reorganized, and large portions are lost, while the fish lines evolved to numerous species. Large scale transposon movement has been...
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crspringernat:10.1186/1471-2164-8-422 2023-05-15T18:09:48+02:00 Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids de Boer, Johan G Yazawa, Ryosuke Davidson, William S Koop, Ben F 2007 http://dx.doi.org/10.1186/1471-2164-8-422 https://link.springer.com/content/pdf/10.1186/1471-2164-8-422.pdf en eng Springer Science and Business Media LLC BMC Genomics volume 8, issue 1 ISSN 1471-2164 Genetics Biotechnology journal-article 2007 crspringernat https://doi.org/10.1186/1471-2164-8-422 2022-01-04T16:20:12Z Abstract Background Several genome duplications have occurred in the evolutionary history of teleost fish. In returning to a stable diploid state, the polyploid genome reorganized, and large portions are lost, while the fish lines evolved to numerous species. Large scale transposon movement has been postulated to play an important role in the genome reorganization process. We analyzed the DNA sequence of several large loci in Salmo salar and other species for the presence of DNA transposon families. Results We have identified bursts of activity of 14 families of DNA transposons (12 Tc1-like and 2 piggyBac-like families, including 11 novel ones) in genome sequences of Salmo salar . Several of these families have similar sequences in a number of closely and distantly related fish, lamprey, and frog species as well as in the parasite Schistosoma japonicum . Analysis of sequence similarities between copies within the families of these bursts demonstrates several waves of transposition activities coinciding with salmonid species divergence. Tc1-like families show a master gene-like copying process, illustrated by extensive but short burst of copying activity, while the piggyBac-like families show a more random copying pattern. Recent families may include copies with an open reading frame for an active transposase enzyme. Conclusion We have identified defined bursts of transposon activity that make use of master-slave and random mechanisms. The bursts occur well after hypothesized polyploidy events and coincide with speciation events. Parasite-mediated lateral transfer of transposons are implicated. Article in Journal/Newspaper Salmo salar Springer Nature (via Crossref) BMC Genomics 8 1 |
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Springer Nature (via Crossref) |
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English |
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Genetics Biotechnology |
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Genetics Biotechnology de Boer, Johan G Yazawa, Ryosuke Davidson, William S Koop, Ben F Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids |
topic_facet |
Genetics Biotechnology |
description |
Abstract Background Several genome duplications have occurred in the evolutionary history of teleost fish. In returning to a stable diploid state, the polyploid genome reorganized, and large portions are lost, while the fish lines evolved to numerous species. Large scale transposon movement has been postulated to play an important role in the genome reorganization process. We analyzed the DNA sequence of several large loci in Salmo salar and other species for the presence of DNA transposon families. Results We have identified bursts of activity of 14 families of DNA transposons (12 Tc1-like and 2 piggyBac-like families, including 11 novel ones) in genome sequences of Salmo salar . Several of these families have similar sequences in a number of closely and distantly related fish, lamprey, and frog species as well as in the parasite Schistosoma japonicum . Analysis of sequence similarities between copies within the families of these bursts demonstrates several waves of transposition activities coinciding with salmonid species divergence. Tc1-like families show a master gene-like copying process, illustrated by extensive but short burst of copying activity, while the piggyBac-like families show a more random copying pattern. Recent families may include copies with an open reading frame for an active transposase enzyme. Conclusion We have identified defined bursts of transposon activity that make use of master-slave and random mechanisms. The bursts occur well after hypothesized polyploidy events and coincide with speciation events. Parasite-mediated lateral transfer of transposons are implicated. |
format |
Article in Journal/Newspaper |
author |
de Boer, Johan G Yazawa, Ryosuke Davidson, William S Koop, Ben F |
author_facet |
de Boer, Johan G Yazawa, Ryosuke Davidson, William S Koop, Ben F |
author_sort |
de Boer, Johan G |
title |
Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids |
title_short |
Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids |
title_full |
Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids |
title_fullStr |
Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids |
title_full_unstemmed |
Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids |
title_sort |
bursts and horizontal evolution of dna transposons in the speciation of pseudotetraploid salmonids |
publisher |
Springer Science and Business Media LLC |
publishDate |
2007 |
url |
http://dx.doi.org/10.1186/1471-2164-8-422 https://link.springer.com/content/pdf/10.1186/1471-2164-8-422.pdf |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_source |
BMC Genomics volume 8, issue 1 ISSN 1471-2164 |
op_doi |
https://doi.org/10.1186/1471-2164-8-422 |
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BMC Genomics |
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8 |
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1 |
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1766182472847982592 |