OrangerV1, Main, Exploration, bibRecord, 001111

Tetraploid Rangpur lime rootstock increases drought tolerance via enhanced constitutive root abscisic acid production

Identifieur interne : 001111 ( Main/Exploration ); précédent : 001110; suivant : 001112

Tetraploid Rangpur lime rootstock increases drought tolerance via enhanced constitutive root abscisic acid production

Auteurs : Thierry Allario [France, Espagne] ; Javier Brumos [Espagne] ; Jose M. Colmenero-Flores [Espagne] ; Domingo J. Iglesias [Espagne] ; Jose A. Pina [Espagne] ; Luis Navarro [Espagne] ; Manuel Talon [Espagne] ; Patrick Ollitrault [France, Espagne] ; Raphael Morillon [France, Espagne]

Source :

Plant, cell and environment : (Print) [ 0140-7791 ] ; 2013.

RBID : Pascal:13-0124885

Descripteurs français

Pascal (Inist)
- Tétraploïdie, Porte greffe, Augmentation, Résistance sécheresse, Tolérance, Production, Adaptation, Polyploïdie, Déficit hydrique, Citrus limonia, Acide abscissique, Ecologie végétale.
Wicri :
- topic : Production.

English descriptors

KwdEn :
- Abscisic acid, Adaptation, Citrus limonia, Drought resistance, Increase, Plant ecology, Polyploidy, Production, Rootstock, Tetraploidy, Tolerance, Water deficit.

Abstract

Whole-genome duplication, or polyploidy, is common in many plant species and often leads to better adaptation to adverse environmental condition. However, little is known about the physiological and molecular determinants underlying adaptation. We examined the drought tolerance in diploid (2x) and autotetraploid (4x) clones of Rangpur lime (Citrus limonia) rootstocks grafted with 2x Valencia Delta sweet orange (Citrus sinensis) scions, named V/2xRL and V/4xRL, respectively. Physiological experiments to study root-shoot communication associated with gene expression studies in roots and leaves were performed. V/4xRL was much more tolerant to water deficit than V/2xRL. Gene expression analysis in leaves and roots showed that more genes related to the response to water stress were differentially expressed in V/2xRL than in V/4xRL. Prior to the stress, when comparing V/4xRL to V/2xRL, V/4xRL leaves had lower stomatal conductance and greater abscisic acid (ABA) content. In roots, ABA content was higher in V/4xRL and was associated to a greater expression of drought responsive genes, including CsNCED1, a pivotal regulatory gene of ABA biosynthesis. We conclude that tetraploidy modifies the expression of genes in Rangpur lime citrus roots to regulate long-distance ABA signalling and adaptation to stress.

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<term>Citrus limonia</term>
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<term>Increase</term>
<term>Plant ecology</term>
<term>Polyploidy</term>
<term>Production</term>
<term>Rootstock</term>
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<term>Porte greffe</term>
<term>Augmentation</term>
<term>Résistance sécheresse</term>
<term>Tolérance</term>
<term>Production</term>
<term>Adaptation</term>
<term>Polyploïdie</term>
<term>Déficit hydrique</term>
<term>Citrus limonia</term>
<term>Acide abscissique</term>
<term>Ecologie végétale</term>
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<front><div type="abstract" xml:lang="en">Whole-genome duplication, or polyploidy, is common in many plant species and often leads to better adaptation to adverse environmental condition. However, little is known about the physiological and molecular determinants underlying adaptation. We examined the drought tolerance in diploid (2x) and autotetraploid (4x) clones of Rangpur lime (Citrus limonia) rootstocks grafted with 2x Valencia Delta sweet orange (Citrus sinensis) scions, named V/2xRL and V/4xRL, respectively. Physiological experiments to study root-shoot communication associated with gene expression studies in roots and leaves were performed. V/4xRL was much more tolerant to water deficit than V/2xRL. Gene expression analysis in leaves and roots showed that more genes related to the response to water stress were differentially expressed in V/2xRL than in V/4xRL. Prior to the stress, when comparing V/4xRL to V/2xRL, V/4xRL leaves had lower stomatal conductance and greater abscisic acid (ABA) content. In roots, ABA content was higher in V/4xRL and was associated to a greater expression of drought responsive genes, including CsNCED1, a pivotal regulatory gene of ABA biosynthesis. We conclude that tetraploidy modifies the expression of genes in Rangpur lime citrus roots to regulate long-distance ABA signalling and adaptation to stress.</div>
</front>
</TEI>
<affiliations><list><country><li>Espagne</li>
<li>France</li>
</country>
<region><li>Andalousie</li>
</region>
</list>
<tree><country name="France"><noRegion><name sortKey="Allario, Thierry" sort="Allario, Thierry" uniqKey="Allario T" first="Thierry" last="Allario">Thierry Allario</name>
</noRegion>
<name sortKey="Morillon, Raphael" sort="Morillon, Raphael" uniqKey="Morillon R" first="Raphael" last="Morillon">Raphael Morillon</name>
<name sortKey="Ollitrault, Patrick" sort="Ollitrault, Patrick" uniqKey="Ollitrault P" first="Patrick" last="Ollitrault">Patrick Ollitrault</name>
</country>
<country name="Espagne"><noRegion><name sortKey="Allario, Thierry" sort="Allario, Thierry" uniqKey="Allario T" first="Thierry" last="Allario">Thierry Allario</name>
</noRegion>
<name sortKey="Brumos, Javier" sort="Brumos, Javier" uniqKey="Brumos J" first="Javier" last="Brumos">Javier Brumos</name>
<name sortKey="Colmenero Flores, Jose M" sort="Colmenero Flores, Jose M" uniqKey="Colmenero Flores J" first="Jose M." last="Colmenero-Flores">Jose M. Colmenero-Flores</name>
<name sortKey="Colmenero Flores, Jose M" sort="Colmenero Flores, Jose M" uniqKey="Colmenero Flores J" first="Jose M." last="Colmenero-Flores">Jose M. Colmenero-Flores</name>
<name sortKey="Iglesias, Domingo J" sort="Iglesias, Domingo J" uniqKey="Iglesias D" first="Domingo J." last="Iglesias">Domingo J. Iglesias</name>
<name sortKey="Morillon, Raphael" sort="Morillon, Raphael" uniqKey="Morillon R" first="Raphael" last="Morillon">Raphael Morillon</name>
<name sortKey="Navarro, Luis" sort="Navarro, Luis" uniqKey="Navarro L" first="Luis" last="Navarro">Luis Navarro</name>
<name sortKey="Ollitrault, Patrick" sort="Ollitrault, Patrick" uniqKey="Ollitrault P" first="Patrick" last="Ollitrault">Patrick Ollitrault</name>
<name sortKey="Pina, Jose A" sort="Pina, Jose A" uniqKey="Pina J" first="Jose A." last="Pina">Jose A. Pina</name>
<name sortKey="Talon, Manuel" sort="Talon, Manuel" uniqKey="Talon M" first="Manuel" last="Talon">Manuel Talon</name>
</country>
</tree>
</affiliations>
</record>

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Tetraploid Rangpur lime rootstock increases drought tolerance via enhanced constitutive root abscisic acid production

Tetraploid Rangpur lime rootstock increases drought tolerance via enhanced constitutive root abscisic acid production

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