Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation.
Identifieur interne : 002891 ( Main/Exploration ); précédent : 002890; suivant : 002892Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation.
Auteurs : Domingo J. Iglesias [Espagne] ; Yoseph Levy ; Aurelio G Mez-Cadenas ; Francisco R. Tadeo ; Eduardo Primo-Millo ; Manuel TalonSource :
- Tree physiology [ 0829-318X ] ; 2004.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Chlorides.
- chemical , pharmacology : Nitrates.
- chemical , physiology : Chlorophyll, Nitrates.
- drug effects : Photosynthesis.
- growth & development : Citrus, Seedlings, Trees.
- physiology : Plant Leaves.
Abstract
We analyzed the effects of nitrate availability on growth of Navelina (Citrus sinensis (L.) Osbeck) scions grafted on three citrus rootstocks differing in salt tolerance: Carrizo citrange (Citrus sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.), Citrus macrophylla Wester and Cleopatra mandarin (Citrus reshni Hort. ex Tanaka). Salt stress reduced total plant biomass by 27-38%, whereas potassium nitrate supplementation partially counteracted this effect by increasing dry matter and new leaf area. Salinized Carrizo citrange had the greatest response to nitrate supplementation, whereas the effects on salinized Cleopatra mandarin and C. macrophylla were less apparent. Nitrogen and chlorophyll contents and photosynthetic activity also increased in leaves of the nitrate-supplemented salinized plants. In salinized plants, nitrate supplementation reduced leaf abscission, stimulated photosynthetic activity and increased growth of new leaves. The nitrate treatment did not modify chloride concentration in leaves, but it reduced chloride concentrations in Carrizo and Macrophylla roots. Therefore, in both rootstocks, chloride content was similar in mature leaves, higher in immature leaves and lower in roots of the nitrate-supplemented salinized plants compared with salinized plants unsupplemented with nitrate. We suggest that the nitrate-induced stimulation of growth reduced chloride concentration in roots through the reallocation of chloride to new leaves.
PubMed: 15234900
Affiliations:
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Iglesias</name><affiliation wicri:level="1"><nlm:affiliation>Departamento de Citricultura y Otros Frutales, Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, E-46113 Moncada, Valencia, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Departamento de Citricultura y Otros Frutales, Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, E-46113 Moncada, Valencia</wicri:regionArea><wicri:noRegion>Valencia</wicri:noRegion></affiliation></author><author><name sortKey="Levy, Yoseph" sort="Levy, Yoseph" uniqKey="Levy Y" first="Yoseph" last="Levy">Yoseph Levy</name></author><author><name sortKey="G Mez Cadenas, Aurelio" sort="G Mez Cadenas, Aurelio" uniqKey="G Mez Cadenas A" first="Aurelio" last="G Mez-Cadenas">Aurelio G Mez-Cadenas</name></author><author><name sortKey="Tadeo, Francisco R" sort="Tadeo, Francisco R" uniqKey="Tadeo F" first="Francisco R" last="Tadeo">Francisco R. Tadeo</name></author><author><name sortKey="Primo Millo, Eduardo" sort="Primo Millo, Eduardo" uniqKey="Primo Millo E" first="Eduardo" last="Primo-Millo">Eduardo Primo-Millo</name></author><author><name sortKey="Talon, Manuel" sort="Talon, Manuel" uniqKey="Talon M" first="Manuel" last="Talon">Manuel Talon</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2004">2004</date><idno type="RBID">pubmed:15234900</idno><idno type="pmid">15234900</idno><idno type="wicri:Area/PubMed/Corpus">000D64</idno><idno type="wicri:Area/PubMed/Curation">000D64</idno><idno type="wicri:Area/PubMed/Checkpoint">000D64</idno><idno type="wicri:Area/Ncbi/Merge">000294</idno><idno type="wicri:Area/Ncbi/Curation">000294</idno><idno type="wicri:Area/Ncbi/Checkpoint">000294</idno><idno type="wicri:doubleKey">0829-318X:2004:Iglesias D:nitrate:improves:growth</idno><idno type="wicri:Area/Main/Merge">002A22</idno><idno type="wicri:Area/Main/Curation">002891</idno><idno type="wicri:Area/Main/Exploration">002891</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation.</title><author><name sortKey="Iglesias, Domingo J" sort="Iglesias, Domingo J" uniqKey="Iglesias D" first="Domingo J" last="Iglesias">Domingo J. Iglesias</name><affiliation wicri:level="1"><nlm:affiliation>Departamento de Citricultura y Otros Frutales, Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, E-46113 Moncada, Valencia, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Departamento de Citricultura y Otros Frutales, Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, E-46113 Moncada, Valencia</wicri:regionArea><wicri:noRegion>Valencia</wicri:noRegion></affiliation></author><author><name sortKey="Levy, Yoseph" sort="Levy, Yoseph" uniqKey="Levy Y" first="Yoseph" last="Levy">Yoseph Levy</name></author><author><name sortKey="G Mez Cadenas, Aurelio" sort="G Mez Cadenas, Aurelio" uniqKey="G Mez Cadenas A" first="Aurelio" last="G Mez-Cadenas">Aurelio G Mez-Cadenas</name></author><author><name sortKey="Tadeo, Francisco R" sort="Tadeo, Francisco R" uniqKey="Tadeo F" first="Francisco R" last="Tadeo">Francisco R. Tadeo</name></author><author><name sortKey="Primo Millo, Eduardo" sort="Primo Millo, Eduardo" uniqKey="Primo Millo E" first="Eduardo" last="Primo-Millo">Eduardo Primo-Millo</name></author><author><name sortKey="Talon, Manuel" sort="Talon, Manuel" uniqKey="Talon M" first="Manuel" last="Talon">Manuel Talon</name></author></analytic><series><title level="j">Tree physiology</title><idno type="ISSN">0829-318X</idno><imprint><date when="2004" type="published">2004</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chlorides (metabolism)</term><term>Chlorophyll (physiology)</term><term>Citrus (growth & development)</term><term>Nitrates (pharmacology)</term><term>Nitrates (physiology)</term><term>Photosynthesis (drug effects)</term><term>Plant Leaves (physiology)</term><term>Seedlings (growth & development)</term><term>Trees (growth & development)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Chlorides</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Nitrates</term></keywords><keywords scheme="MESH" type="chemical" qualifier="physiology" xml:lang="en"><term>Chlorophyll</term><term>Nitrates</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Photosynthesis</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Citrus</term><term>Seedlings</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Leaves</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We analyzed the effects of nitrate availability on growth of Navelina (Citrus sinensis (L.) Osbeck) scions grafted on three citrus rootstocks differing in salt tolerance: Carrizo citrange (Citrus sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.), Citrus macrophylla Wester and Cleopatra mandarin (Citrus reshni Hort. ex Tanaka). Salt stress reduced total plant biomass by 27-38%, whereas potassium nitrate supplementation partially counteracted this effect by increasing dry matter and new leaf area. Salinized Carrizo citrange had the greatest response to nitrate supplementation, whereas the effects on salinized Cleopatra mandarin and C. macrophylla were less apparent. Nitrogen and chlorophyll contents and photosynthetic activity also increased in leaves of the nitrate-supplemented salinized plants. In salinized plants, nitrate supplementation reduced leaf abscission, stimulated photosynthetic activity and increased growth of new leaves. The nitrate treatment did not modify chloride concentration in leaves, but it reduced chloride concentrations in Carrizo and Macrophylla roots. Therefore, in both rootstocks, chloride content was similar in mature leaves, higher in immature leaves and lower in roots of the nitrate-supplemented salinized plants compared with salinized plants unsupplemented with nitrate. We suggest that the nitrate-induced stimulation of growth reduced chloride concentration in roots through the reallocation of chloride to new leaves.</div></front></TEI><affiliations><list><country><li>Espagne</li></country></list><tree><noCountry><name sortKey="G Mez Cadenas, Aurelio" sort="G Mez Cadenas, Aurelio" uniqKey="G Mez Cadenas A" first="Aurelio" last="G Mez-Cadenas">Aurelio G Mez-Cadenas</name><name sortKey="Levy, Yoseph" sort="Levy, Yoseph" uniqKey="Levy Y" first="Yoseph" last="Levy">Yoseph Levy</name><name sortKey="Primo Millo, Eduardo" sort="Primo Millo, Eduardo" uniqKey="Primo Millo E" first="Eduardo" last="Primo-Millo">Eduardo Primo-Millo</name><name sortKey="Tadeo, Francisco R" sort="Tadeo, Francisco R" uniqKey="Tadeo F" first="Francisco R" last="Tadeo">Francisco R. Tadeo</name><name sortKey="Talon, Manuel" sort="Talon, Manuel" uniqKey="Talon M" first="Manuel" last="Talon">Manuel Talon</name></noCountry><country name="Espagne"><noRegion><name sortKey="Iglesias, Domingo J" sort="Iglesias, Domingo J" uniqKey="Iglesias D" first="Domingo J" last="Iglesias">Domingo J. Iglesias</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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