The Citrus ABA signalosome: identification and transcriptional regulation during sweet orange fruit ripening and leaf dehydration
Identifieur interne : 000C16 ( Pmc/Checkpoint ); précédent : 000C15; suivant : 000C17The Citrus ABA signalosome: identification and transcriptional regulation during sweet orange fruit ripening and leaf dehydration
Auteurs : Paco Romero ; María T. Lafuente ; María J. RodrigoSource :
- Journal of Experimental Botany [ 0022-0957 ] ; 2012.
Abstract
The abscisic acid (ABA) signalling core in plants include the cytosolic ABA receptors (PYR/PYL/RCARs), the clade-A type 2C protein phosphatases (PP2CAs), and the subclass III SNF1-related protein kinases 2 (SnRK2s). The aim of this work was to identify these ABA perception system components in sweet orange and to determine the influence of endogenous ABA on their transcriptional regulation during fruit development and ripening, taking advantage of the comparative analysis between a wild-type and a fruit-specific ABA-deficient mutant. Transcriptional changes in the ABA signalosome during leaf dehydration were also studied. Six PYR/PYL/RCAR, five PP2CA, and two subclass III SnRK2 genes, homologous to those of Arabidopsis, were identified in the Citrus genome. The high degree of homology and conserved motifs for protein folding and for functional activity suggested that these Citrus proteins are bona fide core elements of ABA perception in orange. Opposite expression patterns of CsPYL4 and CsPYL5 and ABA accumulation were found during ripening, although there were few differences between varieties. In contrast, changes in expression of CsPP2CA genes during ripening paralleled those of ABA content and agreeed with the relevant differences between wild-type and mutant fruit transcript accumulation. CsSnRK2 gene expression continuously decreased with ripening and no remarkable differences were found between cultivars. Overall, dehydration had a minor effect on CsPYR/PYL/RCAR and CsSnRK2 expression in vegetative tissue, whereas CsABI1, CsAHG1, and CsAHG3 were highly induced by water stress. The global results suggest that responsiveness to ABA changes during citrus fruit ripening, and leaf dehydration was higher in the CsPP2CA gene negative regulators than in the other ABA signalosome components.
Url:
DOI: 10.1093/jxb/ers168
PubMed: 22888124
PubMed Central: 3428003
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The <italic>Citrus</italic> ABA signalosome: identification and transcriptional regulation during sweet orange fruit ripening and leaf dehydration</title><author><name sortKey="Romero, Paco" sort="Romero, Paco" uniqKey="Romero P" first="Paco" last="Romero">Paco Romero</name></author><author><name sortKey="Lafuente, Maria T" sort="Lafuente, Maria T" uniqKey="Lafuente M" first="María T" last="Lafuente">María T. Lafuente</name></author><author><name sortKey="Rodrigo, Maria J" sort="Rodrigo, Maria J" uniqKey="Rodrigo M" first="María J." last="Rodrigo">María J. Rodrigo</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">22888124</idno><idno type="pmc">3428003</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3428003</idno><idno type="RBID">PMC:3428003</idno><idno type="doi">10.1093/jxb/ers168</idno><date when="2012">2012</date><idno type="wicri:Area/Pmc/Corpus">001033</idno><idno type="wicri:Area/Pmc/Curation">001032</idno><idno type="wicri:Area/Pmc/Checkpoint">000C16</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The <italic>Citrus</italic> ABA signalosome: identification and transcriptional regulation during sweet orange fruit ripening and leaf dehydration</title><author><name sortKey="Romero, Paco" sort="Romero, Paco" uniqKey="Romero P" first="Paco" last="Romero">Paco Romero</name></author><author><name sortKey="Lafuente, Maria T" sort="Lafuente, Maria T" uniqKey="Lafuente M" first="María T" last="Lafuente">María T. Lafuente</name></author><author><name sortKey="Rodrigo, Maria J" sort="Rodrigo, Maria J" uniqKey="Rodrigo M" first="María J." last="Rodrigo">María J. Rodrigo</name></author></analytic><series><title level="j">Journal of Experimental Botany</title><idno type="ISSN">0022-0957</idno><idno type="eISSN">1460-2431</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 abscisic acid (ABA) signalling core in plants include the cytosolic ABA receptors (PYR/PYL/RCARs), the clade-A type 2C protein phosphatases (PP2CAs), and the subclass III SNF1-related protein kinases 2 (SnRK2s). The aim of this work was to identify these ABA perception system components in sweet orange and to determine the influence of endogenous ABA on their transcriptional regulation during fruit development and ripening, taking advantage of the comparative analysis between a wild-type and a fruit-specific ABA-deficient mutant. Transcriptional changes in the ABA signalosome during leaf dehydration were also studied. Six PYR/PYL/RCAR, five PP2CA, and two subclass III SnRK2 genes, homologous to those of Arabidopsis, were identified in the Citrus genome. The high degree of homology and conserved motifs for protein folding and for functional activity suggested that these Citrus proteins are bona fide core elements of ABA perception in orange. Opposite expression patterns of CsPYL4 and CsPYL5 and ABA accumulation were found during ripening, although there were few differences between varieties. In contrast, changes in expression of CsPP2CA genes during ripening paralleled those of ABA content and agreeed with the relevant differences between wild-type and mutant fruit transcript accumulation. CsSnRK2 gene expression continuously decreased with ripening and no remarkable differences were found between cultivars. Overall, dehydration had a minor effect on CsPYR/PYL/RCAR and CsSnRK2 expression in vegetative tissue, whereas CsABI1, CsAHG1, and CsAHG3 were highly induced by water stress. The global results suggest that responsiveness to ABA changes during citrus fruit ripening, and leaf dehydration was higher in the CsPP2CA gene negative regulators than in the other ABA signalosome components.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Agusti, J" uniqKey="Agusti J">J Agustí</name></author><author><name sortKey="Zapater, M" uniqKey="Zapater M">M Zapater</name></author><author><name sortKey="Iglesias, Dj" uniqKey="Iglesias D">DJ Iglesias</name></author><author><name sortKey="Cerc S, M" uniqKey="Cerc S M">M Cercós</name></author><author><name sortKey="Tadeo, Fr" uniqKey="Tadeo F">FR Tadeo</name></author><author><name sortKey="Tal N, M" uniqKey="Tal N M">M Talón</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Alferez, F" uniqKey="Alferez F">F Alférez</name></author><author><name sortKey="Zacarias, L" uniqKey="Zacarias L">L 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<front><journal-meta><journal-id journal-id-type="nlm-ta">J Exp Bot</journal-id><journal-id journal-id-type="iso-abbrev">J. Exp. Bot</journal-id><journal-id journal-id-type="hwp">jexbot</journal-id><journal-id journal-id-type="publisher-id">exbotj</journal-id><journal-title-group><journal-title>Journal of Experimental Botany</journal-title></journal-title-group><issn pub-type="ppub">0022-0957</issn><issn pub-type="epub">1460-2431</issn><publisher><publisher-name>Oxford University Press</publisher-name><publisher-loc>UK</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">22888124</article-id><article-id pub-id-type="pmc">3428003</article-id><article-id pub-id-type="doi">10.1093/jxb/ers168</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Paper</subject></subj-group></article-categories><title-group><article-title>The <italic>Citrus</italic> ABA signalosome: identification and transcriptional regulation during sweet orange fruit ripening and leaf dehydration</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="no"><name><surname>Romero</surname><given-names>Paco</given-names></name></contrib><contrib contrib-type="author" corresp="no"><name><surname>Lafuente</surname><given-names>María T</given-names></name></contrib><contrib contrib-type="author"><name><surname>Rodrigo</surname><given-names>María J.</given-names></name><xref ref-type="corresp" rid="c1"><sup>*</sup></xref></contrib><aff id="AF0001"><institution>Instituto de Agroquímica y Tecnología de Alimentos (IATA-CSIC), Consejo Superior de Investigaciones Científicas</institution><addr-line>Av. Agustín Escardino, 7, 46980, Paterna-Valencia</addr-line><country>Spain</country></aff></contrib-group><author-notes><corresp id="c1"><sup>*</sup>To whom correspondence should be addressed. E-mail: <email xlink:href="mjrodrigo@iata.csic.es">mjrodrigo@iata.csic.es</email></corresp></author-notes><pub-date pub-type="ppub"><month>8</month><year>2012</year></pub-date><pub-date pub-type="epub"><day>14</day><month>8</month><year>2012</year></pub-date><pub-date pub-type="pmc-release"><day>14</day><month>8</month><year>2012</year></pub-date><pmc-comment> PMC Release delay is 0 months and 0 days and was based on the
<volume>63</volume><issue>13</issue><fpage>4931</fpage><lpage>4945</lpage><permissions><copyright-statement>© The Author [2012]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com</copyright-statement><copyright-year>2012</copyright-year><license license-type="open-access"><license-p><pmc-comment>CREATIVE COMMONS</pmc-comment>This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/bync/3.0/uk/">http://creativecommons.org/licenses/bync/3.0/uk/</ext-link>) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><p>The abscisic acid (ABA) signalling core in plants include the cytosolic ABA receptors (PYR/PYL/RCARs), the clade-A type 2C protein phosphatases (PP2CAs), and the subclass III SNF1-related protein kinases 2 (SnRK2s). The aim of this work was to identify these ABA perception system components in sweet orange and to determine the influence of endogenous ABA on their transcriptional regulation during fruit development and ripening, taking advantage of the comparative analysis between a wild-type and a fruit-specific ABA-deficient mutant. Transcriptional changes in the ABA signalosome during leaf dehydration were also studied. Six PYR/PYL/RCAR, five PP2CA, and two subclass III SnRK2 genes, homologous to those of Arabidopsis, were identified in the Citrus genome. The high degree of homology and conserved motifs for protein folding and for functional activity suggested that these Citrus proteins are bona fide core elements of ABA perception in orange. Opposite expression patterns of CsPYL4 and CsPYL5 and ABA accumulation were found during ripening, although there were few differences between varieties. In contrast, changes in expression of CsPP2CA genes during ripening paralleled those of ABA content and agreeed with the relevant differences between wild-type and mutant fruit transcript accumulation. CsSnRK2 gene expression continuously decreased with ripening and no remarkable differences were found between cultivars. Overall, dehydration had a minor effect on CsPYR/PYL/RCAR and CsSnRK2 expression in vegetative tissue, whereas CsABI1, CsAHG1, and CsAHG3 were highly induced by water stress. The global results suggest that responsiveness to ABA changes during citrus fruit ripening, and leaf dehydration was higher in the CsPP2CA gene negative regulators than in the other ABA signalosome components.</p></abstract><kwd-group><title>Key words:</title><kwd>Abscisic acid (ABA)</kwd><kwd> Citrus</kwd><kwd> fruit ripening</kwd><kwd> gene expression</kwd><kwd> leaf dehydration</kwd><kwd> PP2CA</kwd><kwd> PYR/PYL/RCAR</kwd><kwd> receptor</kwd><kwd> signalling</kwd><kwd> SnRK2</kwd></kwd-group><counts><page-count count="18"></page-count></counts></article-meta></front></pmc><affiliations><list></list><tree><noCountry><name sortKey="Lafuente, Maria T" sort="Lafuente, Maria T" uniqKey="Lafuente M" first="María T" last="Lafuente">María T. Lafuente</name><name sortKey="Rodrigo, Maria J" sort="Rodrigo, Maria J" uniqKey="Rodrigo M" first="María J." last="Rodrigo">María J. Rodrigo</name><name sortKey="Romero, Paco" sort="Romero, Paco" uniqKey="Romero P" first="Paco" last="Romero">Paco Romero</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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