Partial phenotypic reversion of ABA-deficient flacca tomato (Solanum lycopersicum) scions by a wild-type rootstock: normalizing shoot ethylene relations promotes leaf area but does not diminish whole plant transpiration rate
Identifieur interne : 001484 ( Istex/Corpus ); précédent : 001483; suivant : 001485Partial phenotypic reversion of ABA-deficient flacca tomato (Solanum lycopersicum) scions by a wild-type rootstock: normalizing shoot ethylene relations promotes leaf area but does not diminish whole plant transpiration rate
Auteurs : Ian C. Dodd ; Julian C. Theobald ; Sarah K. Richer ; William J. DaviesSource :
- Journal of Experimental Botany [ 0022-0957 ] ; 2009-07-31.
Abstract
To evaluate the role of root-synthesized ABA in regulating growth and stomatal behaviour under well-watered conditions, isogenic wild-type (WT) and ABA-deficient flacca (flc) tomato (Solanum lycopersicum) were reciprocally and self-grafted just below the cotyledonary node. Since flc scions had lower leaf water potentials due to higher transpiration rates, a subset of all graft combinations was grown under a shoot misting treatment to minimize differences in shoot water status. Misting did not alter the relative effects of the different graft combinations on leaf area. WT scions had the greatest leaf area and lowest whole plant transpiration rate irrespective of the rootstock, implying that shoot ABA biosynthesis was sufficient to account for a WT shoot phenotype. In WT scions, the rootstock had no effect on detached leaf ethylene evolution or xylem concentrations of ABA or the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). In flc scions, although the WT rootstock suppressed stomatal conductance of individual leaves, there was no detectable effect on whole plant transpiration rate. However, leaf area of flc/WT (scion/rootstock) plants increased 1.6-fold compared to flc self-grafts. WT rootstocks increased xylem ABA concentration in flc scions (relative to flc self-grafts) up to 3-fold, and resulted in xylem ACC concentrations and detached leaf ethylene evolution similar to WT scions. Since the WT rootstock normalized shoot ethylene relations but only partially restored the leaf area of flc scions (relative to that of WT scions), shoot ABA biosynthesis can directly promote leaf area via an unknown, ethylene-independent, mechanism.
Url:
DOI: 10.1093/jxb/erp236
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Davies</name><affiliation><mods:affiliation>The Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Experimental Botany</title><idno type="ISSN">0022-0957</idno><idno type="eISSN">1460-2431</idno><imprint><publisher>Oxford University Press</publisher><date type="published" when="2009-07-31">2009-07-31</date><biblScope unit="volume">60</biblScope><biblScope unit="issue">14</biblScope><biblScope unit="page" from="4029">4029</biblScope><biblScope unit="page" to="4039">4039</biblScope></imprint><idno type="ISSN">0022-0957</idno></series><idno type="istex">FF960BF68E13806136691ADBA6C965038E9580B1</idno><idno type="DOI">10.1093/jxb/erp236</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-0957</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">To evaluate the role of root-synthesized ABA in regulating growth and stomatal behaviour under well-watered conditions, isogenic wild-type (WT) and ABA-deficient flacca (flc) tomato (Solanum lycopersicum) were reciprocally and self-grafted just below the cotyledonary node. Since flc scions had lower leaf water potentials due to higher transpiration rates, a subset of all graft combinations was grown under a shoot misting treatment to minimize differences in shoot water status. Misting did not alter the relative effects of the different graft combinations on leaf area. WT scions had the greatest leaf area and lowest whole plant transpiration rate irrespective of the rootstock, implying that shoot ABA biosynthesis was sufficient to account for a WT shoot phenotype. In WT scions, the rootstock had no effect on detached leaf ethylene evolution or xylem concentrations of ABA or the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). In flc scions, although the WT rootstock suppressed stomatal conductance of individual leaves, there was no detectable effect on whole plant transpiration rate. However, leaf area of flc/WT (scion/rootstock) plants increased 1.6-fold compared to flc self-grafts. WT rootstocks increased xylem ABA concentration in flc scions (relative to flc self-grafts) up to 3-fold, and resulted in xylem ACC concentrations and detached leaf ethylene evolution similar to WT scions. Since the WT rootstock normalized shoot ethylene relations but only partially restored the leaf area of flc scions (relative to that of WT scions), shoot ABA biosynthesis can directly promote leaf area via an unknown, ethylene-independent, mechanism.</div></front></TEI><istex><corpusName>oup</corpusName><author><json:item><name>Ian C. Dodd</name><affiliations><json:string>E-mail: I.Dodd@lancaster.ac.uk</json:string></affiliations></json:item><json:item><name>Julian C. Theobald</name><affiliations><json:string>The Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK</json:string></affiliations></json:item><json:item><name>Sarah K. 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Since flc scions had lower leaf water potentials due to higher transpiration rates, a subset of all graft combinations was grown under a shoot misting treatment to minimize differences in shoot water status. Misting did not alter the relative effects of the different graft combinations on leaf area. WT scions had the greatest leaf area and lowest whole plant transpiration rate irrespective of the rootstock, implying that shoot ABA biosynthesis was sufficient to account for a WT shoot phenotype. In WT scions, the rootstock had no effect on detached leaf ethylene evolution or xylem concentrations of ABA or the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). In flc scions, although the WT rootstock suppressed stomatal conductance of individual leaves, there was no detectable effect on whole plant transpiration rate. However, leaf area of flc/WT (scion/rootstock) plants increased 1.6-fold compared to flc self-grafts. WT rootstocks increased xylem ABA concentration in flc scions (relative to flc self-grafts) up to 3-fold, and resulted in xylem ACC concentrations and detached leaf ethylene evolution similar to WT scions. 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Since flc scions had lower leaf water potentials due to higher transpiration rates, a subset of all graft combinations was grown under a shoot misting treatment to minimize differences in shoot water status. Misting did not alter the relative effects of the different graft combinations on leaf area. WT scions had the greatest leaf area and lowest whole plant transpiration rate irrespective of the rootstock, implying that shoot ABA biosynthesis was sufficient to account for a WT shoot phenotype. In WT scions, the rootstock had no effect on detached leaf ethylene evolution or xylem concentrations of ABA or the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). In flc scions, although the WT rootstock suppressed stomatal conductance of individual leaves, there was no detectable effect on whole plant transpiration rate. However, leaf area of flc/WT (scion/rootstock) plants increased 1.6-fold compared to flc self-grafts. WT rootstocks increased xylem ABA concentration in flc scions (relative to flc self-grafts) up to 3-fold, and resulted in xylem ACC concentrations and detached leaf ethylene evolution similar to WT scions. Since the WT rootstock normalized shoot ethylene relations but only partially restored the leaf area of flc scions (relative to that of WT scions), shoot ABA biosynthesis can directly promote leaf area via an unknown, ethylene-independent, mechanism.</p></abstract><textClass><keywords scheme="keyword"><list><item><term>Research Papers</term></item></list></keywords></textClass><textClass><keywords scheme="keyword"><list><head>keywords</head><item><term>ABA</term></item><item><term>ACC</term></item><item><term>ethylene</term></item><item><term>flacca</term></item><item><term>grafting</term></item><item><term>leaf area</term></item><item><term>rootstock</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2009-07-31">Created</change><change when="2009-07-31">Published</change><change xml:id="refBibs-istex" who="#ISTEX-API" when="2016-10-14">References added</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="corpus oup" wicri:toSee="no header"><istex:docType PUBLIC="-//NLM//DTD Journal Publishing DTD v2.3 20070202//EN" URI="journalpublishing.dtd" name="istex:docType"></istex:docType><istex:document><article article-type="research-article"><front><journal-meta><journal-id journal-id-type="hwp">jexbot</journal-id><journal-id journal-id-type="publisher-id">exbotj</journal-id><journal-title>Journal of Experimental Botany</journal-title><issn pub-type="epub">1460-2431</issn><issn pub-type="ppub">0022-0957</issn><publisher><publisher-name>Oxford University Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.1093/jxb/erp236</article-id><article-categories><subj-group><subject>Research Papers</subject></subj-group></article-categories><title-group><article-title>Partial phenotypic reversion of ABA-deficient <italic>flacca</italic> tomato (<italic>Solanum lycopersicum</italic>) scions by a wild-type rootstock: normalizing shoot ethylene relations promotes leaf area but does not diminish whole plant transpiration rate</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Dodd</surname><given-names>Ian C.</given-names></name><xref ref-type="corresp" rid="cor1">*</xref></contrib><contrib contrib-type="author"><name><surname>Theobald</surname><given-names>Julian C.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Richer</surname><given-names>Sarah K.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Davies</surname><given-names>William J.</given-names></name></contrib></contrib-group><aff>The Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK</aff><author-notes><corresp id="cor1"><label>*</label>To whom correspondence should be addressed: <email>I.Dodd@lancaster.ac.uk</email></corresp></author-notes><pub-date pub-type="epub-ppub"><month>10</month><year>2009</year></pub-date><pub-date pub-type="epub"><day>31</day><month>7</month><year>2009</year></pub-date><volume>60</volume><issue>14</issue><fpage>4029</fpage><lpage>4039</lpage><history><date date-type="received"><day>14</day><month>4</month><year>2009</year></date><date date-type="rev-recd"><day>3</day><month>7</month><year>2009</year></date><date date-type="accepted"><day>6</day><month>7</month><year>2009</year></date></history><permissions><copyright-statement>© 2009 The Author(s).</copyright-statement><copyright-year>2009</copyright-year><license license-type="open-access"><p>This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</p><p>This paper is available online free of all access charges (see <ext-link ext-link-type="uri" xlink:href="http://jxb.oxfordjournals.org/open_access.html">http://jxb.oxfordjournals.org/open_access.html</ext-link> for further details)</p></license></permissions><abstract><p>To evaluate the role of root-synthesized ABA in regulating growth and stomatal behaviour under well-watered conditions, isogenic wild-type (WT) and ABA-deficient <italic>flacca</italic> (<italic>flc</italic>) tomato (<italic>Solanum lycopersicum</italic>) were reciprocally and self-grafted just below the cotyledonary node. Since <italic>flc</italic> scions had lower leaf water potentials due to higher transpiration rates, a subset of all graft combinations was grown under a shoot misting treatment to minimize differences in shoot water status. Misting did not alter the relative effects of the different graft combinations on leaf area. WT scions had the greatest leaf area and lowest whole plant transpiration rate irrespective of the rootstock, implying that shoot ABA biosynthesis was sufficient to account for a WT shoot phenotype. In WT scions, the rootstock had no effect on detached leaf ethylene evolution or xylem concentrations of ABA or the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). In <italic>flc</italic> scions, although the WT rootstock suppressed stomatal conductance of individual leaves, there was no detectable effect on whole plant transpiration rate. However, leaf area of <italic>flc</italic>/WT (scion/rootstock) plants increased 1.6-fold compared to <italic>flc</italic> self-grafts. WT rootstocks increased xylem ABA concentration in <italic>flc</italic> scions (relative to <italic>flc</italic> self-grafts) up to 3-fold, and resulted in xylem ACC concentrations and detached leaf ethylene evolution similar to WT scions. Since the WT rootstock normalized shoot ethylene relations but only partially restored the leaf area of <italic>flc</italic> scions (relative to that of WT scions), shoot ABA biosynthesis can directly promote leaf area via an unknown, ethylene-independent, mechanism.</p></abstract><kwd-group><kwd>ABA</kwd><kwd>ACC</kwd><kwd>ethylene</kwd><kwd><italic>flacca</italic></kwd><kwd>grafting</kwd><kwd>leaf area</kwd><kwd>rootstock</kwd></kwd-group></article-meta></front></article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Partial phenotypic reversion of ABA-deficient flacca tomato (Solanum lycopersicum) scions by a wild-type rootstock: normalizing shoot ethylene relations promotes leaf area but does not diminish whole plant transpiration rate</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Partial phenotypic reversion of ABA-deficient flacca tomato (Solanum lycopersicum) scions by a wild-type rootstock: normalizing shoot ethylene relations promotes leaf area but does not diminish whole plant transpiration rate</title></titleInfo><name type="personal" displayLabel="corresp"><namePart type="given">Ian C.</namePart><namePart type="family">Dodd</namePart><affiliation>E-mail: I.Dodd@lancaster.ac.uk</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Julian C.</namePart><namePart type="family">Theobald</namePart><affiliation>The Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Sarah K.</namePart><namePart type="family">Richer</namePart><affiliation>The Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">William J.</namePart><namePart type="family">Davies</namePart><affiliation>The Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="research-article"></genre><subject><topic>Research Papers</topic></subject><originInfo><publisher>Oxford University Press</publisher><dateIssued encoding="w3cdtf">2009-07-31</dateIssued><dateCreated encoding="w3cdtf">2009-07-31</dateCreated><copyrightDate encoding="w3cdtf">2009</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract>To evaluate the role of root-synthesized ABA in regulating growth and stomatal behaviour under well-watered conditions, isogenic wild-type (WT) and ABA-deficient flacca (flc) tomato (Solanum lycopersicum) were reciprocally and self-grafted just below the cotyledonary node. Since flc scions had lower leaf water potentials due to higher transpiration rates, a subset of all graft combinations was grown under a shoot misting treatment to minimize differences in shoot water status. Misting did not alter the relative effects of the different graft combinations on leaf area. WT scions had the greatest leaf area and lowest whole plant transpiration rate irrespective of the rootstock, implying that shoot ABA biosynthesis was sufficient to account for a WT shoot phenotype. In WT scions, the rootstock had no effect on detached leaf ethylene evolution or xylem concentrations of ABA or the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). In flc scions, although the WT rootstock suppressed stomatal conductance of individual leaves, there was no detectable effect on whole plant transpiration rate. However, leaf area of flc/WT (scion/rootstock) plants increased 1.6-fold compared to flc self-grafts. WT rootstocks increased xylem ABA concentration in flc scions (relative to flc self-grafts) up to 3-fold, and resulted in xylem ACC concentrations and detached leaf ethylene evolution similar to WT scions. Since the WT rootstock normalized shoot ethylene relations but only partially restored the leaf area of flc scions (relative to that of WT scions), shoot ABA biosynthesis can directly promote leaf area via an unknown, ethylene-independent, mechanism.</abstract><subject><genre>keywords</genre><topic>ABA</topic><topic>ACC</topic><topic>ethylene</topic><topic>flacca</topic><topic>grafting</topic><topic>leaf area</topic><topic>rootstock</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Experimental Botany</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0022-0957</identifier><identifier type="eISSN">1460-2431</identifier><identifier type="PublisherID">exbotj</identifier><identifier type="PublisherID-hwp">jexbot</identifier><part><date>2009</date><detail type="volume"><caption>vol.</caption><number>60</number></detail><detail type="issue"><caption>no.</caption><number>14</number></detail><extent unit="pages"><start>4029</start><end>4039</end></extent></part></relatedItem><identifier type="istex">FF960BF68E13806136691ADBA6C965038E9580B1</identifier><identifier type="DOI">10.1093/jxb/erp236</identifier><accessCondition type="use and reproduction" contentType="open-access">This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</accessCondition><recordInfo><recordContentSource>OUP</recordContentSource></recordInfo></mods></metadata><covers><json:item><original>true</original><mimetype>image/tiff</mimetype><extension>tiff</extension><uri>https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/covers/tiff</uri></json:item><json:item><original>true</original><mimetype>text/html</mimetype><extension>html</extension><uri>https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/covers/html</uri></json:item></covers><annexes><json:item><original>true</original><mimetype>image/jpeg</mimetype><extension>jpeg</extension><uri>https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/annexes/jpeg</uri></json:item><json:item><original>true</original><mimetype>image/gif</mimetype><extension>gif</extension><uri>https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/annexes/gif</uri></json:item><json:item><original>true</original><mimetype>application/pdf</mimetype><extension>pdf</extension><uri>https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/annexes/pdf</uri></json:item></annexes><enrichments><istex:catWosTEI uri="https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/enrichments/catWos"><teiHeader><profileDesc><textClass><classCode scheme="WOS">PLANT SCIENCES</classCode></textClass></profileDesc></teiHeader></istex:catWosTEI><json:item><type>refBibs</type><uri>https://api.istex.fr/document/FF960BF68E13806136691ADBA6C965038E9580B1/enrichments/refBibs</uri></json:item></enrichments><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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