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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Is there a role for trihelix transcription factors in embryo maturation?</title><author><name sortKey="Barr, Melissa S" sort="Barr, Melissa S" uniqKey="Barr M" first="Melissa S." last="Barr">Melissa S. Barr</name><affiliation><nlm:aff id="A1">Kennard-Dale High School; Fawn Grove, PA USA</nlm:aff></affiliation></author><author><name sortKey="Willmann, Matthew R" sort="Willmann, Matthew R" uniqKey="Willmann M" first="Matthew R." last="Willmann">Matthew R. Willmann</name><affiliation><nlm:aff id="A2">Department of Biology; University of Pennsylvania; Philadelphia, PA USA</nlm:aff></affiliation></author><author><name sortKey="Jenik, Pablo D" sort="Jenik, Pablo D" uniqKey="Jenik P" first="Pablo D." last="Jenik">Pablo D. Jenik</name><affiliation><nlm:aff id="A3">Department of Biology; Franklin & Marshall College; Lancaster, PA USA</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">22353863</idno><idno type="pmc">3405702</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3405702</idno><idno type="RBID">PMC:3405702</idno><idno type="doi">10.4161/psb.18893</idno><date when="2012">2012</date><idno type="wicri:Area/Pmc/Corpus">000A07</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Is there a role for trihelix transcription factors in embryo maturation?</title><author><name sortKey="Barr, Melissa S" sort="Barr, Melissa S" uniqKey="Barr M" first="Melissa S." last="Barr">Melissa S. Barr</name><affiliation><nlm:aff id="A1">Kennard-Dale High School; Fawn Grove, PA USA</nlm:aff></affiliation></author><author><name sortKey="Willmann, Matthew R" sort="Willmann, Matthew R" uniqKey="Willmann M" first="Matthew R." last="Willmann">Matthew R. Willmann</name><affiliation><nlm:aff id="A2">Department of Biology; University of Pennsylvania; Philadelphia, PA USA</nlm:aff></affiliation></author><author><name sortKey="Jenik, Pablo D" sort="Jenik, Pablo D" uniqKey="Jenik P" first="Pablo D." last="Jenik">Pablo D. Jenik</name><affiliation><nlm:aff id="A3">Department of Biology; Franklin & Marshall College; Lancaster, PA USA</nlm:aff></affiliation></author></analytic><series><title level="j">Plant Signaling & Behavior</title><idno type="ISSN">1559-2316</idno><idno type="eISSN">1559-2324</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The development of the angiosperm seed includes the accumulation of storage products, the loss of most of its water and the establishment of dormancy. While much is known about the pathways that initiate maturation during mid-embryogenesis or repress it after germination, only recently has it been shown that other mechanisms repress the program during early embryogenesis. Two recent reports have shown that microRNAs are critical regulators of maturation in Arabidopsis early embryogenesis. Two closely related trihelix transcription factors, ASIL1 and ASIL2, were identified as probable partially redundant repressors of early maturation downstream of the microRNA-synthesizing enzyme DICER-LIKE1. An overlap between the genes upregulated in <italic>asil1-1</italic> and <italic>dcl1-15</italic> mutants support this conclusion. <italic>ASIL2</italic> orthologs are found across seed plants, indicating that their role in maturation might be conserved. <italic>ASIL1</italic> arose from the ancestral <italic>ASIL2</italic> clade by a gene duplication event in the Brassicaceae, although it is not clear whether its function has diverged.</p></div></front></TEI><pmc article-type="brief-report"><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 Signal Behav</journal-id><journal-id journal-id-type="iso-abbrev">Plant Signal Behav</journal-id><journal-id journal-id-type="publisher-id">PSB</journal-id><journal-title-group><journal-title>Plant Signaling & Behavior</journal-title></journal-title-group><issn pub-type="ppub">1559-2316</issn><issn pub-type="epub">1559-2324</issn><publisher><publisher-name>Landes Bioscience</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">22353863</article-id><article-id pub-id-type="pmc">3405702</article-id><article-id pub-id-type="publisher-id">2011PSB0482R</article-id><article-id pub-id-type="doi">10.4161/psb.18893</article-id><article-id pub-id-type="pii">18893</article-id><article-categories><subj-group subj-group-type="heading"><subject>Short Communication</subject></subj-group></article-categories><title-group><article-title>Is there a role for trihelix transcription factors in embryo maturation?</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Barr</surname><given-names>Melissa S.</given-names></name><xref ref-type="aff" rid="A1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Willmann</surname><given-names>Matthew R.</given-names></name><xref ref-type="aff" rid="A2"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>Jenik</surname><given-names>Pablo D.</given-names></name><xref ref-type="aff" rid="A3"><sup>3</sup></xref><xref ref-type="corresp" rid="cor1">*</xref></contrib><aff id="A1"><label>1</label>Kennard-Dale High School; Fawn Grove, PA USA</aff><aff id="A2"><label>2</label>Department of Biology; University of Pennsylvania; Philadelphia, PA USA</aff><aff id="A3"><label>3</label>Department of Biology; Franklin & Marshall College; Lancaster, PA USA</aff></contrib-group><author-notes><corresp id="cor1"><bold>* Correspondence to:</bold> Pablo D. Jenik; Email: <email xlink:href="pjenik@fandm.edu">pjenik@fandm.edu</email></corresp></author-notes><pub-date pub-type="ppub"><day>01</day><month>2</month><year>2012</year></pub-date><volume>7</volume><issue>2</issue><fpage>205</fpage><lpage>209</lpage><permissions><copyright-statement>Copyright © 2012 Landes Bioscience</copyright-statement><copyright-year>2012</copyright-year></permissions><abstract><p>The development of the angiosperm seed includes the accumulation of storage products, the loss of most of its water and the establishment of dormancy. While much is known about the pathways that initiate maturation during mid-embryogenesis or repress it after germination, only recently has it been shown that other mechanisms repress the program during early embryogenesis. Two recent reports have shown that microRNAs are critical regulators of maturation in Arabidopsis early embryogenesis. Two closely related trihelix transcription factors, ASIL1 and ASIL2, were identified as probable partially redundant repressors of early maturation downstream of the microRNA-synthesizing enzyme DICER-LIKE1. An overlap between the genes upregulated in <italic>asil1-1</italic> and <italic>dcl1-15</italic> mutants support this conclusion. <italic>ASIL2</italic> orthologs are found across seed plants, indicating that their role in maturation might be conserved. <italic>ASIL1</italic> arose from the ancestral <italic>ASIL2</italic> clade by a gene duplication event in the Brassicaceae, although it is not clear whether its function has diverged.</p></abstract><kwd-group kwd-group-type="author"><title>Keywords: </title><kwd>Arabidopsis</kwd><kwd>embryogenesis</kwd><kwd>maturation</kwd><kwd>microRNA</kwd><kwd>trihelix transcription factor</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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