OrangerV1, Main, Exploration, bibRecord, 003243

Physiological and anatomical disturbances induced by chloride salts in sensitive and tolerant citrus : beneficial and detrimental effects of cations

Identifieur interne : 003243 ( Main/Exploration ); précédent : 003242; suivant : 003244

Physiological and anatomical disturbances induced by chloride salts in sensitive and tolerant citrus : beneficial and detrimental effects of cations

Auteurs : R. Romero-Aranda [Espagne] ; J. L. Moya [Espagne] ; F. R. Tadeo [Espagne] ; F. Legaz [Espagne] ; E. Primo-Millo [Espagne] ; M. Talon [Espagne]

Source :

Plant, cell and environment [ 0140-7791 ] ; 1998.

RBID : Pascal:99-0106258

Descripteurs français

Pascal (Inist)
- Salinité, Sensibilité résistance, Résistance sel, Comparaison interspécifique, Relation dose réponse, Feuille végétal, Dégât, Abscission, Stade juvénile plante, Chlorure, Calcium, Potassium, Croissance, Anatomie, Photosynthèse, Citrus reshni, Citrus sinensis Poncirus trifoliata.
Wicri :
- topic : Calcium, Potassium, Anatomie.

English descriptors

KwdEn :
- Abscission, Anatomy, Calcium, Chlorides, Damage, Dose activity relation, Growth, Interspecific comparison, Photosynthesis, Plant juvenile growth stage, Plant leaf, Potassium, Salinity, Salt resistance, Sensitivity resistance.

Abstract

In citrus, the relative contributions of chloride and cations to growth disturbances induced by salinity are a matter of controversy. Chloride salts (15 mol m^-3 CaCl₂, 30 mol m^-3 CaCl and 30 mol m^-3 KCI) reduced growth and gas exchange parameters, increased leaf damage and abscission and produced anatomical disarrangements and mineral imbalances in seedlings of sensitive Carrizo citrange (Citrus sinensis x Poncirus trifoliata) and tolerant Cleopatra mandarin (Citrus reshni). In both cultivars, Ca²⁺ was more beneficial, and K⁺ more detrimental, for growth than sodium. Photosynthesis and growth disturbances were highly correlated (P ≤ 0.001) with leaf Cl^- build-up. In the sensitive genotype, Cl^- was also significantly correlated with several leaf anatomical disarrangements, such as increase in succulence. In comparison with sodium, both calcium and potassium increased leaf Cl^- content (up to 25 and 69%, respectively). Protective calcium effects were not linked to improvement of photosynthesis, reduction of leaf anatomical disarrangements, or prevention of Cl^- and Na⁺ increases. It is proposed that the ameliorative effects of calcium on citrus grown under salinity are mostly related to reduction of leaf abscission. Collectively, the data suggest a cause-effect relationship between Cl^- build-up and reduced growth, whereas chloride correlations with declines in photosynthesis or increases in succulence appear to be indirect.

Affiliations:

Espagne

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Le document en format XML

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<series><title level="j" type="main">Plant, cell and environment</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Abscission</term>
<term>Anatomy</term>
<term>Calcium</term>
<term>Chlorides</term>
<term>Damage</term>
<term>Dose activity relation</term>
<term>Growth</term>
<term>Interspecific comparison</term>
<term>Photosynthesis</term>
<term>Plant juvenile growth stage</term>
<term>Plant leaf</term>
<term>Potassium</term>
<term>Salinity</term>
<term>Salt resistance</term>
<term>Sensitivity resistance</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Salinité</term>
<term>Sensibilité résistance</term>
<term>Résistance sel</term>
<term>Comparaison interspécifique</term>
<term>Relation dose réponse</term>
<term>Feuille végétal</term>
<term>Dégât</term>
<term>Abscission</term>
<term>Stade juvénile plante</term>
<term>Chlorure</term>
<term>Calcium</term>
<term>Potassium</term>
<term>Croissance</term>
<term>Anatomie</term>
<term>Photosynthèse</term>
<term>Citrus reshni</term>
<term>Citrus sinensis  Poncirus trifoliata</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Calcium</term>
<term>Potassium</term>
<term>Anatomie</term>
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<front><div type="abstract" xml:lang="en">In citrus, the relative contributions of chloride and cations to growth disturbances induced by salinity are a matter of controversy. Chloride salts (15 mol m<sup>-3</sup>
 CaCl<sub>2</sub>
, 30 mol m<sup>-3</sup>
 CaCl and 30 mol m<sup>-3</sup>
 KCI) reduced growth and gas exchange parameters, increased leaf damage and abscission and produced anatomical disarrangements and mineral imbalances in seedlings of sensitive Carrizo citrange (Citrus sinensis x Poncirus trifoliata) and tolerant Cleopatra mandarin (Citrus reshni). In both cultivars, Ca<sup>2+</sup>
 was more beneficial, and K<sup>+</sup>
 more detrimental, for growth than sodium. Photosynthesis and growth disturbances were highly correlated (P ≤ 0.001) with leaf Cl<sup>-</sup>
 build-up. In the sensitive genotype, Cl<sup>-</sup>
 was also significantly correlated with several leaf anatomical disarrangements, such as increase in succulence. In comparison with sodium, both calcium and potassium increased leaf Cl<sup>-</sup>
 content (up to 25 and 69%, respectively). Protective calcium effects were not linked to improvement of photosynthesis, reduction of leaf anatomical disarrangements, or prevention of Cl<sup>-</sup>
 and Na<sup>+</sup>
 increases. It is proposed that the ameliorative effects of calcium on citrus grown under salinity are mostly related to reduction of leaf abscission. Collectively, the data suggest a cause-effect relationship between Cl<sup>-</sup>
 build-up and reduced growth, whereas chloride correlations with declines in photosynthesis or increases in succulence appear to be indirect.</div>
</front>
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<affiliations><list><country><li>Espagne</li>
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<tree><country name="Espagne"><noRegion><name sortKey="Romero Aranda, R" sort="Romero Aranda, R" uniqKey="Romero Aranda R" first="R." last="Romero-Aranda">R. Romero-Aranda</name>
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<name sortKey="Legaz, F" sort="Legaz, F" uniqKey="Legaz F" first="F." last="Legaz">F. Legaz</name>
<name sortKey="Moya, J L" sort="Moya, J L" uniqKey="Moya J" first="J. L." last="Moya">J. L. Moya</name>
<name sortKey="Primo Millo, E" sort="Primo Millo, E" uniqKey="Primo Millo E" first="E." last="Primo-Millo">E. Primo-Millo</name>
<name sortKey="Tadeo, F R" sort="Tadeo, F R" uniqKey="Tadeo F" first="F. R." last="Tadeo">F. R. Tadeo</name>
<name sortKey="Talon, M" sort="Talon, M" uniqKey="Talon M" first="M." last="Talon">M. Talon</name>
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Physiological and anatomical disturbances induced by chloride salts in sensitive and tolerant citrus : beneficial and detrimental effects of cations

Physiological and anatomical disturbances induced by chloride salts in sensitive and tolerant citrus : beneficial and detrimental effects of cations

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri