The use of the PMI/mannose selection system to recover transgenic sweet orange plants (Citrus sinensis L. Osbeck)
Identifieur interne : 002B19 ( Main/Exploration ); précédent : 002B18; suivant : 002B20The use of the PMI/mannose selection system to recover transgenic sweet orange plants (Citrus sinensis L. Osbeck)
Auteurs : R. L. Boscariol [Brésil] ; W. A. B. Almeida [Brésil] ; M. T. V. C. Derbyshire [Brésil] ; F. A. A. Mourao Filho [Brésil] ; B. M. J. Mendes [Brésil]Source :
- Plant cell reports : (Print) [ 0721-7714 ] ; 2003.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Plante transgénique, Saccharose.
English descriptors
- KwdEn :
- Agrobacterium tumefaciens, Chemical composition, Citrus sinensis, Citrus sinensis (drug effects), Citrus sinensis (genetics), Citrus sinensis (growth & development), Cultivar, Culture Techniques, Culture medium, Fructose (pharmacology), Gene Expression Regulation, Enzymologic (drug effects), Genetic Markers (genetics), Intraspecific comparison, Mannose, Mannose (pharmacology), Mannose-6-Phosphate Isomerase (genetics), Mannose-6-Phosphate Isomerase (metabolism), Mannose-6-phosphate isomerase, Marker assisted selection, Micropropagation, Plants, Genetically Modified (drug effects), Plants, Genetically Modified (genetics), Plants, Genetically Modified (growth & development), Sucrose, Sucrose (pharmacology), Transgenic plant.
- MESH :
- chemical , genetics : Genetic Markers, Mannose-6-Phosphate Isomerase.
- chemical , metabolism : Mannose-6-Phosphate Isomerase.
- chemical , pharmacology : Fructose, Mannose, Sucrose.
- drug effects : Citrus sinensis, Gene Expression Regulation, Enzymologic, Plants, Genetically Modified.
- genetics : Citrus sinensis, Plants, Genetically Modified.
- growth & development : Citrus sinensis, Plants, Genetically Modified.
- Culture Techniques.
Abstract
A new method for obtaining transgenic sweet orange plants was developed in which positive selection (Positech) based on the Escherichia coli phosphomannose-isomerase (PMI) gene as the selectable marker gene and mannose as the selective agent was used. Epicotyl segments from in vitro-germinated plants of Valencia, Hamlin, Natal and Pera sweet oranges were inoculated with Agrobacterium tumefaciens EHA101-pNOV2116 and subsequently selected on medium supplemented with different concentrations of mannose or with a combination of mannose and sucrose as a carbon source. Genetic transformation was confirmed by PCR and Southern blot. The transgene expression was evaluated using a chlorophenol red assay and isoenzymes. The transformation efficiency rate ranged from 3% to 23.8%, depending on cultivar. This system provides an efficient manner for selecting transgenic sweet orange plants without using antibiotics or herbicides.
Affiliations:
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Agrobacterium tumefaciens</term>
<term>Chemical composition</term>
<term>Citrus sinensis</term>
<term>Citrus sinensis (drug effects)</term>
<term>Citrus sinensis (genetics)</term>
<term>Citrus sinensis (growth & development)</term>
<term>Cultivar</term>
<term>Culture Techniques</term>
<term>Culture medium</term>
<term>Fructose (pharmacology)</term>
<term>Gene Expression Regulation, Enzymologic (drug effects)</term>
<term>Genetic Markers (genetics)</term>
<term>Intraspecific comparison</term>
<term>Mannose</term>
<term>Mannose (pharmacology)</term>
<term>Mannose-6-Phosphate Isomerase (genetics)</term>
<term>Mannose-6-Phosphate Isomerase (metabolism)</term>
<term>Mannose-6-phosphate isomerase</term>
<term>Marker assisted selection</term>
<term>Micropropagation</term>
<term>Plants, Genetically Modified (drug effects)</term>
<term>Plants, Genetically Modified (genetics)</term>
<term>Plants, Genetically Modified (growth & development)</term>
<term>Sucrose</term>
<term>Sucrose (pharmacology)</term>
<term>Transgenic plant</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Genetic Markers</term>
<term>Mannose-6-Phosphate Isomerase</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Mannose-6-Phosphate Isomerase</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Fructose</term>
<term>Mannose</term>
<term>Sucrose</term>
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<keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Citrus sinensis</term>
<term>Gene Expression Regulation, Enzymologic</term>
<term>Plants, Genetically Modified</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Citrus sinensis</term>
<term>Plants, Genetically Modified</term>
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<term>Plants, Genetically Modified</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Culture Techniques</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Mannose-6-phosphate isomerase</term>
<term>Sélection assistée marqueur</term>
<term>Plante transgénique</term>
<term>Multiplication végétative in vitro</term>
<term>Composition chimique</term>
<term>Milieu culture</term>
<term>Comparaison intraspécifique</term>
<term>Cultivar</term>
<term>Citrus sinensis</term>
<term>Agrobacterium tumefaciens</term>
<term>Mannose</term>
<term>Saccharose</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Plante transgénique</term>
<term>Saccharose</term>
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<front><div type="abstract" xml:lang="en">A new method for obtaining transgenic sweet orange plants was developed in which positive selection (Positech) based on the Escherichia coli phosphomannose-isomerase (PMI) gene as the selectable marker gene and mannose as the selective agent was used. Epicotyl segments from in vitro-germinated plants of Valencia, Hamlin, Natal and Pera sweet oranges were inoculated with Agrobacterium tumefaciens EHA101-pNOV2116 and subsequently selected on medium supplemented with different concentrations of mannose or with a combination of mannose and sucrose as a carbon source. Genetic transformation was confirmed by PCR and Southern blot. The transgene expression was evaluated using a chlorophenol red assay and isoenzymes. The transformation efficiency rate ranged from 3% to 23.8%, depending on cultivar. This system provides an efficient manner for selecting transgenic sweet orange plants without using antibiotics or herbicides.</div>
</front>
</TEI>
<affiliations><list><country><li>Brésil</li>
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<tree><country name="Brésil"><region name="État de São Paulo"><name sortKey="Boscariol, R L" sort="Boscariol, R L" uniqKey="Boscariol R" first="R. L." last="Boscariol">R. L. Boscariol</name>
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<name sortKey="Almeida, W A B" sort="Almeida, W A B" uniqKey="Almeida W" first="W. A. B." last="Almeida">W. A. B. Almeida</name>
<name sortKey="Derbyshire, M T V C" sort="Derbyshire, M T V C" uniqKey="Derbyshire M" first="M. T. V. C." last="Derbyshire">M. T. V. C. Derbyshire</name>
<name sortKey="Mendes, B M J" sort="Mendes, B M J" uniqKey="Mendes B" first="B. M. J." last="Mendes">B. M. J. Mendes</name>
<name sortKey="Mourao Filho, F A A" sort="Mourao Filho, F A A" uniqKey="Mourao Filho F" first="F. A. A." last="Mourao Filho">F. A. A. Mourao Filho</name>
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