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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The Pea DELLA Proteins LA and CRY Are Important Regulators of Gibberellin Synthesis and Root Growth<xref ref-type="fn" rid="fn1">[W]</xref><xref ref-type="fn" rid="fn2">[OA]</xref></title><author><name sortKey="Weston, Diana E" sort="Weston, Diana E" uniqKey="Weston D" first="Diana E." last="Weston">Diana E. Weston</name></author><author><name sortKey="Elliott, Robert C" sort="Elliott, Robert C" uniqKey="Elliott R" first="Robert C." last="Elliott">Robert C. Elliott</name></author><author><name sortKey="Lester, Diane R" sort="Lester, Diane R" uniqKey="Lester D" first="Diane R." last="Lester">Diane R. Lester</name></author><author><name sortKey="Rameau, Catherine" sort="Rameau, Catherine" uniqKey="Rameau C" first="Catherine" last="Rameau">Catherine Rameau</name></author><author><name sortKey="Reid, James B" sort="Reid, James B" uniqKey="Reid J" first="James B." last="Reid">James B. Reid</name></author><author><name sortKey="Murfet, Ian C" sort="Murfet, Ian C" uniqKey="Murfet I" first="Ian C." last="Murfet">Ian C. Murfet</name></author><author><name sortKey="Ross, John J" sort="Ross, John J" uniqKey="Ross J" first="John J." last="Ross">John J. Ross</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">18375599</idno><idno type="pmc">2330316</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2330316</idno><idno type="RBID">PMC:2330316</idno><idno type="doi">10.1104/pp.108.115808</idno><date when="2008">2008</date><idno type="wicri:Area/Pmc/Corpus">001054</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">001054</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The Pea DELLA Proteins LA and CRY Are Important Regulators of Gibberellin Synthesis and Root Growth<xref ref-type="fn" rid="fn1">[W]</xref><xref ref-type="fn" rid="fn2">[OA]</xref></title><author><name sortKey="Weston, Diana E" sort="Weston, Diana E" uniqKey="Weston D" first="Diana E." last="Weston">Diana E. Weston</name></author><author><name sortKey="Elliott, Robert C" sort="Elliott, Robert C" uniqKey="Elliott R" first="Robert C." last="Elliott">Robert C. Elliott</name></author><author><name sortKey="Lester, Diane R" sort="Lester, Diane R" uniqKey="Lester D" first="Diane R." last="Lester">Diane R. Lester</name></author><author><name sortKey="Rameau, Catherine" sort="Rameau, Catherine" uniqKey="Rameau C" first="Catherine" last="Rameau">Catherine Rameau</name></author><author><name sortKey="Reid, James B" sort="Reid, James B" uniqKey="Reid J" first="James B." last="Reid">James B. Reid</name></author><author><name sortKey="Murfet, Ian C" sort="Murfet, Ian C" uniqKey="Murfet I" first="Ian C." last="Murfet">Ian C. Murfet</name></author><author><name sortKey="Ross, John J" sort="Ross, John J" uniqKey="Ross J" first="John J." last="Ross">John J. Ross</name></author></analytic><series><title level="j">Plant Physiology</title><idno type="ISSN">0032-0889</idno><idno type="eISSN">1532-2548</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The theory that bioactive gibberellins (GAs) act as inhibitors of inhibitors of plant growth was based originally on the slender pea (<italic>Pisum sativum</italic>) mutant (genotype <italic>la cry-s</italic>), but the molecular nature of this mutant has remained obscure. Here we show that the genes <italic>LA</italic> and <italic>CRY</italic> encode DELLA proteins, previously characterized in other species (Arabidopsis [<italic>Arabidopsis thaliana</italic>] and several grasses) as repressors of growth, which are destabilized by GAs. Mutations <italic>la</italic> and <italic>cry-s</italic> encode nonfunctional proteins, accounting for the fact that <italic>la cry-s</italic> plants are extremely elongated, or slender. We use the <italic>la</italic> and <italic>cry-s</italic> mutations to show that in roots, DELLA proteins effectively promote the expression of GA synthesis genes, as well as inhibit elongation. We show also that one of the DELLA-regulated genes is a second member of the pea GA 3-oxidase family, and that this gene appears to play a major role in pea roots.</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 Physiol</journal-id><journal-id journal-id-type="publisher-id">plantphysiol</journal-id><journal-title>Plant Physiology</journal-title><issn pub-type="ppub">0032-0889</issn><issn pub-type="epub">1532-2548</issn><publisher><publisher-name>American Society of Plant Biologists</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">18375599</article-id><article-id pub-id-type="pmc">2330316</article-id><article-id pub-id-type="publisher-id">115808</article-id><article-id pub-id-type="doi">10.1104/pp.108.115808</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject><subj-group><subject>Development and Hormone Action</subject></subj-group></subj-group></article-categories><title-group><article-title>The Pea DELLA Proteins LA and CRY Are Important Regulators of Gibberellin Synthesis and Root Growth<xref ref-type="fn" rid="fn1">[W]</xref><xref ref-type="fn" rid="fn2">[OA]</xref></article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Weston</surname><given-names>Diana E.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Elliott</surname><given-names>Robert C.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Lester</surname><given-names>Diane R.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Rameau</surname><given-names>Catherine</given-names></name></contrib><contrib contrib-type="author"><name><surname>Reid</surname><given-names>James B.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Murfet</surname><given-names>Ian C.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Ross</surname><given-names>John J.</given-names></name><xref ref-type="corresp" rid="cor1">*</xref></contrib></contrib-group><aff id="N0x3598170N0x482ce50">School of Plant Science, University of Tasmania, Hobart, Tasmania 7001, Australia (D.E.W., R.C.E., D.R.L., J.B.R., I.C.M., J.J.R.); and INRA, Institut Jean-Pierre Bourgin, Station de Génétique et d'Amélioration des Plantes, F–78000 Versailles, France (C.R.)</aff><author-notes><fn id="cor1"><label>*</label><p>Corresponding author; e-mail <email>john.ross@utas.edu.au</email>.</p></fn></author-notes><pub-date pub-type="ppub"><month>5</month><year>2008</year></pub-date><volume>147</volume><issue>1</issue><fpage>199</fpage><lpage>205</lpage><history><date date-type="received"><day>8</day><month>1</month><year>2008</year></date><date date-type="accepted"><day>26</day><month>3</month><year>2008</year></date></history><permissions><copyright-statement>Copyright © 2008, American Society of Plant Biologists</copyright-statement></permissions><abstract><p>The theory that bioactive gibberellins (GAs) act as inhibitors of inhibitors of plant growth was based originally on the slender pea (<italic>Pisum sativum</italic>) mutant (genotype <italic>la cry-s</italic>), but the molecular nature of this mutant has remained obscure. Here we show that the genes <italic>LA</italic> and <italic>CRY</italic> encode DELLA proteins, previously characterized in other species (Arabidopsis [<italic>Arabidopsis thaliana</italic>] and several grasses) as repressors of growth, which are destabilized by GAs. Mutations <italic>la</italic> and <italic>cry-s</italic> encode nonfunctional proteins, accounting for the fact that <italic>la cry-s</italic> plants are extremely elongated, or slender. We use the <italic>la</italic> and <italic>cry-s</italic> mutations to show that in roots, DELLA proteins effectively promote the expression of GA synthesis genes, as well as inhibit elongation. We show also that one of the DELLA-regulated genes is a second member of the pea GA 3-oxidase family, and that this gene appears to play a major role in pea roots.</p></abstract></article-meta><notes><fn-group><fn><p>The author 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.plantphysiol.org">www.plantphysiol.org</ext-link>) is: John J. Ross (<email>john.ross@utas.edu.au</email>).</p></fn><fn id="fn1"><label>[W]</label><p>The online version of this article contains Web-only data.</p></fn><fn id="fn2"><label>[OA]</label><p>Open Access articles can be viewed online without a subscription.</p></fn><fn><p><ext-link ext-link-type="uri" xlink:href="www.plantphysiol.org/cgi/doi/10.1104/pp.108.115808">www.plantphysiol.org/cgi/doi/10.1104/pp.108.115808</ext-link></p></fn></fn-group></notes></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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