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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The epichloae: alkaloid diversity and roles in symbiosis with grasses</title><author><name sortKey="Schardl, Christopher L" sort="Schardl, Christopher L" uniqKey="Schardl C" first="Christopher L" last="Schardl">Christopher L. Schardl</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Florea, Simona" sort="Florea, Simona" uniqKey="Florea S" first="Simona" last="Florea">Simona Florea</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Pan, Juan" sort="Pan, Juan" uniqKey="Pan J" first="Juan" last="Pan">Juan Pan</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Nagabhyru, Padmaja" sort="Nagabhyru, Padmaja" uniqKey="Nagabhyru P" first="Padmaja" last="Nagabhyru">Padmaja Nagabhyru</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Bec, Sladana" sort="Bec, Sladana" uniqKey="Bec S" first="Sladana" last="Bec">Sladana Bec</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Calie, Patrick J" sort="Calie, Patrick J" uniqKey="Calie P" first="Patrick J" last="Calie">Patrick J. Calie</name><affiliation><nlm:aff id="A2">Department of Biological Sciences, Eastern Kentucky University, 235 Moore Science Bldg., 521 Lancaster Ave., Richmond, KY 40475, USA</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">23850071</idno><idno type="pmc">3874428</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3874428</idno><idno type="RBID">PMC:3874428</idno><idno type="doi">10.1016/j.pbi.2013.06.012</idno><date when="2013">2013</date><idno type="wicri:Area/Pmc/Corpus">000143</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000143</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The epichloae: alkaloid diversity and roles in symbiosis with grasses</title><author><name sortKey="Schardl, Christopher L" sort="Schardl, Christopher L" uniqKey="Schardl C" first="Christopher L" last="Schardl">Christopher L. Schardl</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Florea, Simona" sort="Florea, Simona" uniqKey="Florea S" first="Simona" last="Florea">Simona Florea</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Pan, Juan" sort="Pan, Juan" uniqKey="Pan J" first="Juan" last="Pan">Juan Pan</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Nagabhyru, Padmaja" sort="Nagabhyru, Padmaja" uniqKey="Nagabhyru P" first="Padmaja" last="Nagabhyru">Padmaja Nagabhyru</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Bec, Sladana" sort="Bec, Sladana" uniqKey="Bec S" first="Sladana" last="Bec">Sladana Bec</name><affiliation><nlm:aff id="A1">Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</nlm:aff></affiliation></author><author><name sortKey="Calie, Patrick J" sort="Calie, Patrick J" uniqKey="Calie P" first="Patrick J" last="Calie">Patrick J. Calie</name><affiliation><nlm:aff id="A2">Department of Biological Sciences, Eastern Kentucky University, 235 Moore Science Bldg., 521 Lancaster Ave., Richmond, KY 40475, USA</nlm:aff></affiliation></author></analytic><series><title level="j">Current opinion in plant biology</title><idno type="ISSN">1369-5266</idno><idno type="eISSN">1879-0356</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="P1">Epichloae (<italic>Epichloë</italic> and <italic>Neotyphodium</italic> species; Clavicipitaceae) are fungi that live in systemic symbioses with cool-season grasses, and many produce alkaloids that are deterrent or toxic to herbivores. The epichloae colonize much of the aerial plant tissues, and most benignly colonize host seeds to transmit vertically. Of their four chemical classes of alkaloids, the ergot alkaloids and indole-diterpenes are active against mammals and insects, whereas peramine and lolines specifically affect insects. Comparative genomic analysis of Clavicipitaceae reveals a distinctive feature of the epichloae, namely, large repeat blocks in their alkaloid biosynthesis gene loci. Such repeat blocks can facilitate gene losses, mutations, and duplications, thus enhancing diversity of alkaloid structures within each class. We suggest that alkaloid diversification is selected especially in the vertically transmissible epichloae.</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>
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<front><journal-meta><journal-id journal-id-type="nlm-journal-id">100883395</journal-id><journal-id journal-id-type="pubmed-jr-id">21113</journal-id><journal-id journal-id-type="nlm-ta">Curr Opin Plant Biol</journal-id><journal-id journal-id-type="iso-abbrev">Curr. Opin. Plant Biol.</journal-id><journal-title-group><journal-title>Current opinion in plant biology</journal-title></journal-title-group><issn pub-type="ppub">1369-5266</issn><issn pub-type="epub">1879-0356</issn></journal-meta><article-meta><article-id pub-id-type="pmid">23850071</article-id><article-id pub-id-type="pmc">3874428</article-id><article-id pub-id-type="doi">10.1016/j.pbi.2013.06.012</article-id><article-id pub-id-type="manuscript">NIHMS505865</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>The epichloae: alkaloid diversity and roles in symbiosis with grasses</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Schardl</surname><given-names>Christopher L</given-names></name><xref ref-type="aff" rid="A1">1</xref></contrib><contrib contrib-type="author"><name><surname>Florea</surname><given-names>Simona</given-names></name><xref ref-type="aff" rid="A1">1</xref></contrib><contrib contrib-type="author"><name><surname>Pan</surname><given-names>Juan</given-names></name><xref ref-type="aff" rid="A1">1</xref></contrib><contrib contrib-type="author"><name><surname>Nagabhyru</surname><given-names>Padmaja</given-names></name><xref ref-type="aff" rid="A1">1</xref></contrib><contrib contrib-type="author"><name><surname>Bec</surname><given-names>Sladana</given-names></name><xref ref-type="aff" rid="A1">1</xref></contrib><contrib contrib-type="author"><name><surname>Calie</surname><given-names>Patrick J</given-names></name><xref ref-type="aff" rid="A2">2</xref></contrib></contrib-group><aff id="A1"><label>1</label>Department of Plant Pathology, 201F Plant Sciences Building, 1405 Veterans Drive, University of Kentucky, Lexington, KY 40546-0312, USA</aff><aff id="A2"><label>2</label>Department of Biological Sciences, Eastern Kentucky University, 235 Moore Science Bldg., 521 Lancaster Ave., Richmond, KY 40475, USA</aff><author-notes><corresp id="CR1">Corresponding author: Schardl, Christopher L (<email>Schardl@uky.edu</email>)</corresp></author-notes><pub-date pub-type="nihms-submitted"><day>23</day><month>8</month><year>2013</year></pub-date><pub-date pub-type="epub"><day>11</day><month>7</month><year>2013</year></pub-date><pub-date pub-type="ppub"><month>8</month><year>2013</year></pub-date><pub-date pub-type="pmc-release"><day>01</day><month>8</month><year>2014</year></pub-date><volume>16</volume><issue>4</issue><elocation-id>10.1016/j.pbi.2013.06.012</elocation-id><permissions><copyright-statement>2013 Elsevier Ltd. All rights reserved.</copyright-statement><copyright-year>2013</copyright-year></permissions><abstract><p id="P1">Epichloae (<italic>Epichloë</italic> and <italic>Neotyphodium</italic> species; Clavicipitaceae) are fungi that live in systemic symbioses with cool-season grasses, and many produce alkaloids that are deterrent or toxic to herbivores. The epichloae colonize much of the aerial plant tissues, and most benignly colonize host seeds to transmit vertically. Of their four chemical classes of alkaloids, the ergot alkaloids and indole-diterpenes are active against mammals and insects, whereas peramine and lolines specifically affect insects. Comparative genomic analysis of Clavicipitaceae reveals a distinctive feature of the epichloae, namely, large repeat blocks in their alkaloid biosynthesis gene loci. Such repeat blocks can facilitate gene losses, mutations, and duplications, thus enhancing diversity of alkaloid structures within each class. We suggest that alkaloid diversification is selected especially in the vertically transmissible epichloae.</p></abstract><funding-group><award-group><funding-source country="United States">National Institute of General Medical Sciences : NIGMS</funding-source><award-id>R01 GM086888 || GM</award-id></award-group></funding-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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