Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids

<p<Abstract</p< <p<Background</p< <p<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 sp...
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Autor*in:	Davidson William S [verfasserIn] Yazawa Ryosuke [verfasserIn] de Boer Johan G [verfasserIn] Koop Ben F [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2007

Übergeordnetes Werk:	In: BMC Genomics - BMC, 2003, 8(2007), 1, p 422
Übergeordnetes Werk:	volume:8 ; year:2007 ; number:1, p 422

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1186/1471-2164-8-422

Katalog-ID:	DOAJ060704950

Internformat


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matchkey_str	article:14712164:2007----::ussnhrznaeouinfntasoosnhseitoop
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allfields	10.1186/1471-2164-8-422 doi (DE-627)DOAJ060704950 (DE-599)DOAJfb06ce9c4a4d4cca884e6416302e780a DE-627 ger DE-627 rakwb eng TP248.13-248.65 QH426-470 Davidson William S verfasserin aut Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p< Biotechnology Genetics Yazawa Ryosuke verfasserin aut de Boer Johan G verfasserin aut Koop Ben F verfasserin aut In BMC Genomics BMC, 2003 8(2007), 1, p 422 (DE-627)326644954 (DE-600)2041499-7 14712164 nnns volume:8 year:2007 number:1, p 422 https://doi.org/10.1186/1471-2164-8-422 kostenfrei https://doaj.org/article/fb06ce9c4a4d4cca884e6416302e780a kostenfrei http://www.biomedcentral.com/1471-2164/8/422 kostenfrei https://doaj.org/toc/1471-2164 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2007 1, p 422
spelling	10.1186/1471-2164-8-422 doi (DE-627)DOAJ060704950 (DE-599)DOAJfb06ce9c4a4d4cca884e6416302e780a DE-627 ger DE-627 rakwb eng TP248.13-248.65 QH426-470 Davidson William S verfasserin aut Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p< Biotechnology Genetics Yazawa Ryosuke verfasserin aut de Boer Johan G verfasserin aut Koop Ben F verfasserin aut In BMC Genomics BMC, 2003 8(2007), 1, p 422 (DE-627)326644954 (DE-600)2041499-7 14712164 nnns volume:8 year:2007 number:1, p 422 https://doi.org/10.1186/1471-2164-8-422 kostenfrei https://doaj.org/article/fb06ce9c4a4d4cca884e6416302e780a kostenfrei http://www.biomedcentral.com/1471-2164/8/422 kostenfrei https://doaj.org/toc/1471-2164 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2007 1, p 422
allfields_unstemmed	10.1186/1471-2164-8-422 doi (DE-627)DOAJ060704950 (DE-599)DOAJfb06ce9c4a4d4cca884e6416302e780a DE-627 ger DE-627 rakwb eng TP248.13-248.65 QH426-470 Davidson William S verfasserin aut Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p< Biotechnology Genetics Yazawa Ryosuke verfasserin aut de Boer Johan G verfasserin aut Koop Ben F verfasserin aut In BMC Genomics BMC, 2003 8(2007), 1, p 422 (DE-627)326644954 (DE-600)2041499-7 14712164 nnns volume:8 year:2007 number:1, p 422 https://doi.org/10.1186/1471-2164-8-422 kostenfrei https://doaj.org/article/fb06ce9c4a4d4cca884e6416302e780a kostenfrei http://www.biomedcentral.com/1471-2164/8/422 kostenfrei https://doaj.org/toc/1471-2164 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2007 1, p 422
allfieldsGer	10.1186/1471-2164-8-422 doi (DE-627)DOAJ060704950 (DE-599)DOAJfb06ce9c4a4d4cca884e6416302e780a DE-627 ger DE-627 rakwb eng TP248.13-248.65 QH426-470 Davidson William S verfasserin aut Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p< Biotechnology Genetics Yazawa Ryosuke verfasserin aut de Boer Johan G verfasserin aut Koop Ben F verfasserin aut In BMC Genomics BMC, 2003 8(2007), 1, p 422 (DE-627)326644954 (DE-600)2041499-7 14712164 nnns volume:8 year:2007 number:1, p 422 https://doi.org/10.1186/1471-2164-8-422 kostenfrei https://doaj.org/article/fb06ce9c4a4d4cca884e6416302e780a kostenfrei http://www.biomedcentral.com/1471-2164/8/422 kostenfrei https://doaj.org/toc/1471-2164 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2007 1, p 422
allfieldsSound	10.1186/1471-2164-8-422 doi (DE-627)DOAJ060704950 (DE-599)DOAJfb06ce9c4a4d4cca884e6416302e780a DE-627 ger DE-627 rakwb eng TP248.13-248.65 QH426-470 Davidson William S verfasserin aut Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier <p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p< Biotechnology Genetics Yazawa Ryosuke verfasserin aut de Boer Johan G verfasserin aut Koop Ben F verfasserin aut In BMC Genomics BMC, 2003 8(2007), 1, p 422 (DE-627)326644954 (DE-600)2041499-7 14712164 nnns volume:8 year:2007 number:1, p 422 https://doi.org/10.1186/1471-2164-8-422 kostenfrei https://doaj.org/article/fb06ce9c4a4d4cca884e6416302e780a kostenfrei http://www.biomedcentral.com/1471-2164/8/422 kostenfrei https://doaj.org/toc/1471-2164 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2007 1, p 422
language	English
source	In BMC Genomics 8(2007), 1, p 422 volume:8 year:2007 number:1, p 422
sourceStr	In BMC Genomics 8(2007), 1, p 422 volume:8 year:2007 number:1, p 422
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Biotechnology Genetics
isfreeaccess_bool	true
container_title	BMC Genomics
authorswithroles_txt_mv	Davidson William S @@aut@@ Yazawa Ryosuke @@aut@@ de Boer Johan G @@aut@@ Koop Ben F @@aut@@
publishDateDaySort_date	2007-01-01T00:00:00Z
hierarchy_top_id	326644954
id	DOAJ060704950
language_de	englisch
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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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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. 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callnumber-first	T - Technology
author	Davidson William S
spellingShingle	Davidson William S misc TP248.13-248.65 misc QH426-470 misc Biotechnology misc Genetics Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids
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topic_title	TP248.13-248.65 QH426-470 Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids
topic	misc TP248.13-248.65 misc QH426-470 misc Biotechnology misc Genetics
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title	Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids
ctrlnum	(DE-627)DOAJ060704950 (DE-599)DOAJfb06ce9c4a4d4cca884e6416302e780a
title_full	Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids
author_sort	Davidson William S
journal	BMC Genomics
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author_browse	Davidson William S Yazawa Ryosuke de Boer Johan G Koop Ben F
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format_se	Elektronische Aufsätze
author-letter	Davidson William S
doi_str_mv	10.1186/1471-2164-8-422
author2-role	verfasserin
title_sort	bursts and horizontal evolution of dna transposons in the speciation of pseudotetraploid salmonids
callnumber	TP248.13-248.65
title_auth	Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids
abstract	<p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p<
abstractGer	<p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p<
abstract_unstemmed	<p<Abstract</p< <p<Background</p< <p<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 <it<Salmo salar </it<and other species for the presence of DNA transposon families.</p< <p<Results</p< <p<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 <it<Salmo salar</it<. 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 <it<Schistosoma japonicum</it<. 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.</p< <p<Conclusion</p< <p<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.</p<
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title_short	Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids
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Bursts and horizontal evolution of DNA transposons in the speciation of pseudotetraploid salmonids

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