Glycerol stimulation of chlorophyll synthesis, embryogenesis, and carboxylation and sucrose metabolism enzymes in nucellar callus of Hamlin' sweet orange
Identifieur interne : 003894 ( Main/Exploration ); précédent : 003893; suivant : 003895Glycerol stimulation of chlorophyll synthesis, embryogenesis, and carboxylation and sucrose metabolism enzymes in nucellar callus of Hamlin' sweet orange
Auteurs : J. C. V. Vu [États-Unis] ; R. P. Niedz ; G. YelenoskySource :
- Plant cell, tissue and organ culture [ 0167-6857 ] ; 1993.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Agrume.
English descriptors
- KwdEn :
Abstract
Phosphoenolpyruvate carboxylase (PEPCase) and sucrose phosphate synthase (SPS) were active in nucellar calli of «Hamlin» sweet orange, Citrus sinensis (L.) Osbeck, grown on media containing either 5% sucrose or 2% glycerol as the primary carbon source. Activities of the enzymes, however, were much higher in the glycerol-grown tissues than those grown in sucrose. Glycerol, in addition, stimulated embryogenesis and chlorophyll biosynthesis and initiated the onset of ribulose bisphosphate carboxylase-oxygenase (Rubisco) activity. These stimulatory effects, which were not observed in sucrose-grown calli, became more obvious when calli grown on glycerol-containing, agar-solidified medium were transferred and grown in liquid suspension medium containing 2% glycerol
Affiliations:
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Le document en format XML
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<author><name sortKey="Vu, J C V" sort="Vu, J C V" uniqKey="Vu J" first="J. C. V." last="Vu">J. C. V. Vu</name>
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<s2>Orlando FL 32803</s2>
<s3>USA</s3>
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<country>États-Unis</country>
<wicri:noRegion>Orlando FL 32803</wicri:noRegion>
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<author><name sortKey="Niedz, R P" sort="Niedz, R P" uniqKey="Niedz R" first="R. P." last="Niedz">R. P. Niedz</name>
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<author><name sortKey="Yelenosky, G" sort="Yelenosky, G" uniqKey="Yelenosky G" first="G." last="Yelenosky">G. Yelenosky</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biosynthesis</term>
<term>Chlorophyll</term>
<term>Citrus fruit</term>
<term>Citrus sinensis</term>
<term>Embryonic development</term>
<term>Enzymatic activity</term>
<term>Glycerol</term>
<term>Metabolism</term>
<term>Phosphoenolpyruvate carboxylase</term>
<term>Ribulosebisphosphate carboxylase</term>
<term>Sucrose synthase</term>
<term>Sucrose-phosphate synthase</term>
<term>Tissue culture</term>
<term>Vegetals</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Métabolisme</term>
<term>Culture tissu</term>
<term>Végétal</term>
<term>Développement embryonnaire</term>
<term>Chlorophylle</term>
<term>Biosynthèse</term>
<term>Sucrose-phosphate synthase</term>
<term>Phosphoenolpyruvate carboxylase</term>
<term>Ribulosebisphosphate carboxylase</term>
<term>Activité enzymatique</term>
<term>Glycérol</term>
<term>Citrus sinensis</term>
<term>Agrume</term>
<term>Sucrose synthase</term>
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<front><div type="abstract" xml:lang="en">Phosphoenolpyruvate carboxylase (PEPCase) and sucrose phosphate synthase (SPS) were active in nucellar calli of «Hamlin» sweet orange, Citrus sinensis (L.) Osbeck, grown on media containing either 5% sucrose or 2% glycerol as the primary carbon source. Activities of the enzymes, however, were much higher in the glycerol-grown tissues than those grown in sucrose. Glycerol, in addition, stimulated embryogenesis and chlorophyll biosynthesis and initiated the onset of ribulose bisphosphate carboxylase-oxygenase (Rubisco) activity. These stimulatory effects, which were not observed in sucrose-grown calli, became more obvious when calli grown on glycerol-containing, agar-solidified medium were transferred and grown in liquid suspension medium containing 2% glycerol</div>
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