The sucrose synthase-1 promoter from Citrus sinensis directs expression of the β-glucuronidase reporter gene in phloem tissue and in response to wounding in transgenic plants.
Identifieur interne : 001641 ( Main/Exploration ); précédent : 001640; suivant : 001642The sucrose synthase-1 promoter from Citrus sinensis directs expression of the β-glucuronidase reporter gene in phloem tissue and in response to wounding in transgenic plants.
Auteurs : Stacy D. Singer [États-Unis] ; Jean-Michel Hily ; Kerik D. CoxSource :
- Planta [ 1432-2048 ] ; 2011.
English descriptors
- KwdEn :
- Arabidopsis (genetics), Base Sequence, Citrus sinensis (enzymology), Citrus sinensis (genetics), Cloning, Molecular, Gene Expression Regulation, Plant, Genes, Reporter, Glucosyltransferases (genetics), Glucuronidase (biosynthesis), Glucuronidase (genetics), Molecular Sequence Data, Phloem (metabolism), Plant Growth Regulators (genetics), Plant Proteins (genetics), Plants, Genetically Modified, Plasmids (genetics), Promoter Regions, Genetic, Tobacco (genetics).
- MESH :
- chemical , biosynthesis : Glucuronidase.
- chemical , genetics : Glucosyltransferases, Glucuronidase, Plant Growth Regulators, Plant Proteins.
- enzymology : Citrus sinensis.
- genetics : Arabidopsis, Citrus sinensis, Plasmids, Tobacco.
- metabolism : Phloem.
- Base Sequence, Cloning, Molecular, Gene Expression Regulation, Plant, Genes, Reporter, Molecular Sequence Data, Plants, Genetically Modified, Promoter Regions, Genetic.
Abstract
Interest in phloem-specific promoters for the engineering of transgenic plants has been increasing in recent years. In this study we isolated two similar, but distinct, alleles of the Citrus sinensis sucrose synthase-1 promoter (CsSUS1p) and inserted them upstream of the β-glucuronidase (GUS) gene to test their ability to drive expression in the phloem of transgenic Arabidopsis thaliana and Nicotiana tabacum. Although both promoter variants were capable of conferring localized GUS expression in the phloem, the CsSUS1p-2 allele also generated a significant level of expression in non-target tissues. Unexpectedly, GUS expression was also instigated in a minority of CsSUS1p::GUS lines in response to wounding in the leaves of transgenic Arabidopsis. Deletion analysis of the CsSUS1p suggested that a fragment comprising nucleotides -410 to -268 relative to the translational start site contained elements required for phloem-specific expression while nucleotides -268 to -103 contained elements necessary for wound-specific expression. Interestingly, the main difference between the two CsSUS1p alleles was the presence of a 94-bp insertion in allele 2. Fusion of this indel to a minimal promoter and GUS reporter gene indicated that it contained stamen and carpel-specific enhancer elements. This finding of highly specific and separable regulatory units within the CsSUS1p suggests that this promoter may have a potential application in the generation of constructs for the use in the development of transgenic plants resistant to a wide variety of target pests.
DOI: 10.1007/s00425-011-1432-x
PubMed: 21594624
Affiliations:
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Singer</name><affiliation wicri:level="4"><nlm:affiliation>Department of Plant Pathology and Plant-Microbe Biology, New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Plant Pathology and Plant-Microbe Biology, New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456</wicri:regionArea><placeName><region type="state">État de New York</region><settlement type="city">Ithaca (New York)</settlement></placeName><orgName type="university">Université Cornell</orgName></affiliation></author><author><name sortKey="Hily, Jean Michel" sort="Hily, Jean Michel" uniqKey="Hily J" first="Jean-Michel" last="Hily">Jean-Michel Hily</name></author><author><name sortKey="Cox, Kerik D" sort="Cox, Kerik D" uniqKey="Cox K" first="Kerik D" last="Cox">Kerik D. 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In this study we isolated two similar, but distinct, alleles of the Citrus sinensis sucrose synthase-1 promoter (CsSUS1p) and inserted them upstream of the β-glucuronidase (GUS) gene to test their ability to drive expression in the phloem of transgenic Arabidopsis thaliana and Nicotiana tabacum. Although both promoter variants were capable of conferring localized GUS expression in the phloem, the CsSUS1p-2 allele also generated a significant level of expression in non-target tissues. Unexpectedly, GUS expression was also instigated in a minority of CsSUS1p::GUS lines in response to wounding in the leaves of transgenic Arabidopsis. Deletion analysis of the CsSUS1p suggested that a fragment comprising nucleotides -410 to -268 relative to the translational start site contained elements required for phloem-specific expression while nucleotides -268 to -103 contained elements necessary for wound-specific expression. Interestingly, the main difference between the two CsSUS1p alleles was the presence of a 94-bp insertion in allele 2. Fusion of this indel to a minimal promoter and GUS reporter gene indicated that it contained stamen and carpel-specific enhancer elements. This finding of highly specific and separable regulatory units within the CsSUS1p suggests that this promoter may have a potential application in the generation of constructs for the use in the development of transgenic plants resistant to a wide variety of target pests.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>État de New York</li></region><settlement><li>Ithaca (New York)</li></settlement><orgName><li>Université Cornell</li></orgName></list><tree><noCountry><name sortKey="Cox, Kerik D" sort="Cox, Kerik D" uniqKey="Cox K" first="Kerik D" last="Cox">Kerik D. Cox</name><name sortKey="Hily, Jean Michel" sort="Hily, Jean Michel" uniqKey="Hily J" first="Jean-Michel" last="Hily">Jean-Michel Hily</name></noCountry><country name="États-Unis"><region name="État de New York"><name sortKey="Singer, Stacy D" sort="Singer, Stacy D" uniqKey="Singer S" first="Stacy D" last="Singer">Stacy D. Singer</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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