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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Independent Ancient Polyploidy Events in the Sister Families Brassicaceae and Cleomaceae<xref ref-type="fn" rid="fn2">[W]</xref></title><author><name sortKey="Schranz, M Eric" sort="Schranz, M Eric" uniqKey="Schranz M" first="M. Eric" last="Schranz">M. Eric Schranz</name><affiliation><nlm:aff id="aff1">Department of Genetics and Evolution, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany</nlm:aff></affiliation></author><author><name sortKey="Mitchell Olds, Thomas" sort="Mitchell Olds, Thomas" uniqKey="Mitchell Olds T" first="Thomas" last="Mitchell-Olds">Thomas Mitchell-Olds</name><affiliation><nlm:aff id="aff1">Department of Genetics and Evolution, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">16617098</idno><idno type="pmc">1456871</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1456871</idno><idno type="RBID">PMC:1456871</idno><idno type="doi">10.1105/tpc.106.041111</idno><date when="2006">2006</date><idno type="wicri:Area/Pmc/Corpus">000792</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Independent Ancient Polyploidy Events in the Sister Families Brassicaceae and Cleomaceae<xref ref-type="fn" rid="fn2">[W]</xref></title><author><name sortKey="Schranz, M Eric" sort="Schranz, M Eric" uniqKey="Schranz M" first="M. Eric" last="Schranz">M. Eric Schranz</name><affiliation><nlm:aff id="aff1">Department of Genetics and Evolution, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany</nlm:aff></affiliation></author><author><name sortKey="Mitchell Olds, Thomas" sort="Mitchell Olds, Thomas" uniqKey="Mitchell Olds T" first="Thomas" last="Mitchell-Olds">Thomas Mitchell-Olds</name><affiliation><nlm:aff id="aff1">Department of Genetics and Evolution, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany</nlm:aff></affiliation></author></analytic><series><title level="j">The Plant Cell</title><idno type="ISSN">1040-4651</idno><idno type="eISSN">1532-298X</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Recent studies have elucidated the ancient polyploid history of the <italic>Arabidopsis thaliana</italic> (Brassicaceae) genome. The studies concur that there was at least one polyploidy event occurring some 14.5 to 86 million years ago (Mya), possibly near the divergence of the Brassicaceae from its sister family, Cleomaceae. Using a comparative genomics approach, we asked whether this polyploidy event was unique to members of the Brassicaceae, shared with the Cleomaceae, or an independent polyploidy event in each lineage. We isolated and sequenced three genomic regions from diploid <italic>Cleome spinosa</italic> (Cleomaceae) that are each homoeologous to a duplicated region shared between At3 and At5, centered on the paralogs of <italic>SEPALLATA</italic> (<italic>SEP</italic>) and <italic>CONSTANS</italic> (<italic>CO</italic>). Phylogenetic reconstructions and analysis of synonymous substitution rates support the hypothesis that a genomic triplication in <italic>Cleome</italic> occurred independently of and more recently than the duplication event in the Brassicaceae. There is a strong correlation in the copy number (single versus duplicate) of individual genes, suggesting functionally consistent influences operating on gene copy number in these two independently evolving lineages. However, the amount of gene loss in <italic>Cleome</italic> is greater than in <italic>Arabidopsis</italic>. The genome of <italic>C. spinosa</italic> is only 1.9 times the size of <italic>A. thaliana</italic>, enabling comparative genome analysis of separate but related polyploidy events.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Plant Cell</journal-id><journal-title>The Plant Cell</journal-title><issn pub-type="ppub">1040-4651</issn><issn pub-type="epub">1532-298X</issn><publisher><publisher-name>American Society of Plant Biologists</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">16617098</article-id><article-id pub-id-type="pmc">1456871</article-id><article-id pub-id-type="publisher-id">041111</article-id><article-id pub-id-type="doi">10.1105/tpc.106.041111</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Articles</subject></subj-group></article-categories><title-group><article-title>Independent Ancient Polyploidy Events in the Sister Families Brassicaceae and Cleomaceae<xref ref-type="fn" rid="fn2">[W]</xref></article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Schranz</surname><given-names>M. Eric</given-names></name><xref ref-type="aff" rid="aff1">a</xref><xref ref-type="fn" rid="fn1">1</xref><xref ref-type="corresp" rid="cor1">2</xref></contrib><contrib contrib-type="author"><name><surname>Mitchell-Olds</surname><given-names>Thomas</given-names></name><xref ref-type="aff" rid="aff1">a</xref><xref ref-type="fn" rid="fn1">1</xref></contrib></contrib-group><aff id="aff1"><label>a</label>Department of Genetics and Evolution, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany</aff><author-notes><fn id="fn1"><label>1</label><p>Current address: Department of Biology, PO Box 91000, Duke University, Durham, NC 27708.</p></fn><fn id="cor1"><label>2</label><p>To whom correspondence should be addressed. E-mail <email>eric.schranz@duke.edu</email>; fax 919-613-8177.</p></fn></author-notes><pub-date pub-type="ppub"><month>5</month><year>2006</year></pub-date><volume>18</volume><issue>5</issue><fpage>1152</fpage><lpage>1165</lpage><history><date date-type="received"><day>13</day><month>1</month><year>2006</year></date><date date-type="rev-recd"><day>27</day><month>2</month><year>2006</year></date><date date-type="accepted"><day>21</day><month>3</month><year>2006</year></date></history><permissions><copyright-statement>Copyright © 2006, American Society of Plant Biologists</copyright-statement></permissions><abstract><p>Recent studies have elucidated the ancient polyploid history of the <italic>Arabidopsis thaliana</italic> (Brassicaceae) genome. The studies concur that there was at least one polyploidy event occurring some 14.5 to 86 million years ago (Mya), possibly near the divergence of the Brassicaceae from its sister family, Cleomaceae. Using a comparative genomics approach, we asked whether this polyploidy event was unique to members of the Brassicaceae, shared with the Cleomaceae, or an independent polyploidy event in each lineage. We isolated and sequenced three genomic regions from diploid <italic>Cleome spinosa</italic> (Cleomaceae) that are each homoeologous to a duplicated region shared between At3 and At5, centered on the paralogs of <italic>SEPALLATA</italic> (<italic>SEP</italic>) and <italic>CONSTANS</italic> (<italic>CO</italic>). Phylogenetic reconstructions and analysis of synonymous substitution rates support the hypothesis that a genomic triplication in <italic>Cleome</italic> occurred independently of and more recently than the duplication event in the Brassicaceae. There is a strong correlation in the copy number (single versus duplicate) of individual genes, suggesting functionally consistent influences operating on gene copy number in these two independently evolving lineages. However, the amount of gene loss in <italic>Cleome</italic> is greater than in <italic>Arabidopsis</italic>. The genome of <italic>C. spinosa</italic> is only 1.9 times the size of <italic>A. thaliana</italic>, enabling comparative genome analysis of separate but related polyploidy events.</p></abstract></article-meta><notes><fn-group><fn><p>The authors responsible for distribution of materials integral to the findings presented in this article in accordance with the policy described in the Instructions for Authors (<ext-link ext-link-type="uri" xlink:href="www.plantcell.org">www.plantcell.org</ext-link>) are: M. Eric Schranz (<email>eric.schranz@duke.edu</email>) and Thomas Mitchell-Olds (<email>tmo1@duke.edu</email>).</p></fn><fn id="fn2"><label>[W]</label><p>Online version contains Web-only data.</p></fn><fn><p>Article, publication date, and citation information can be found at <ext-link ext-link-type="uri" xlink:href="www.plantcell.org/cgi/doi/10.1105/tpc.106.041111">www.plantcell.org/cgi/doi/10.1105/tpc.106.041111</ext-link>.</p></fn></fn-group></notes></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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