Microgenomic analysis reveals cell type-specific gene expression patterns between ray and fusiform initials within the cambial meristem of Populus.
Identifieur interne : 003839 ( Main/Curation ); précédent : 003838; suivant : 003840Microgenomic analysis reveals cell type-specific gene expression patterns between ray and fusiform initials within the cambial meristem of Populus.
Auteurs : Nadia Goué [France] ; Marie-Claude Lesage-Descauses ; Ewa J. Mellerowicz ; Elisabeth Magel ; Philippe Label ; Björn SundbergSource :
- The New phytologist [ 1469-8137 ] ; 2008.
Descripteurs français
- KwdFr :
- ARN messager (métabolisme), Analyse de profil d'expression de gènes (MeSH), Bases de données génétiques (MeSH), Différenciation cellulaire (génétique), Génomique (MeSH), Méristème (génétique), Méristème (métabolisme), Métabolisme glucidique (génétique), Paroi cellulaire (métabolisme), Phloème (métabolisme), Photosynthèse (génétique), Populus (cytologie), Populus (génétique), Populus (métabolisme), Protéines végétales (génétique), Protéines végétales (métabolisme), RT-PCR (MeSH), Séquençage par oligonucléotides en batterie (MeSH), Transport biologique (MeSH), Xylème (métabolisme).
- MESH :
- cytologie : Populus.
- génétique : Différenciation cellulaire, Méristème, Métabolisme glucidique, Photosynthèse, Populus, Protéines végétales.
- métabolisme : ARN messager, Méristème, Paroi cellulaire, Phloème, Populus, Protéines végétales, Xylème.
- Analyse de profil d'expression de gènes, Bases de données génétiques, Génomique, RT-PCR, Séquençage par oligonucléotides en batterie, Transport biologique.
English descriptors
- KwdEn :
- Biological Transport (MeSH), Carbohydrate Metabolism (genetics), Cell Differentiation (genetics), Cell Wall (metabolism), Databases, Genetic (MeSH), Gene Expression Profiling (MeSH), Genomics (MeSH), Meristem (genetics), Meristem (metabolism), Oligonucleotide Array Sequence Analysis (MeSH), Phloem (metabolism), Photosynthesis (genetics), Plant Proteins (genetics), Plant Proteins (metabolism), Populus (cytology), Populus (genetics), Populus (metabolism), RNA, Messenger (metabolism), Reverse Transcriptase Polymerase Chain Reaction (MeSH), Xylem (metabolism).
- MESH :
- chemical , genetics : Plant Proteins.
- cytology : Populus.
- genetics : Carbohydrate Metabolism, Cell Differentiation, Meristem, Photosynthesis, Populus.
- metabolism : Cell Wall, Meristem, Phloem, Plant Proteins, Populus, RNA, Messenger, Xylem.
- Biological Transport, Databases, Genetic, Gene Expression Profiling, Genomics, Oligonucleotide Array Sequence Analysis, Reverse Transcriptase Polymerase Chain Reaction.
Abstract
The vascular cambium is the meristem in trees that produce wood. This meristem consists of two types of neighbouring initials: fusiform cambial cells (FCCs), which give rise to the axial cell system (i.e. fibres and vessel elements), and ray cambial cells (RCCs), which give rise to rays. There is little molecular information on the mechanisms whereby the differing characteristics of these neighbouring cells are maintained. A microgenomic approach was adopted in which the transcriptomes of FCCs and RCCs dissected out from the cambial meristem of poplar (Populus trichocarpa x Populus deltoïdes var. Boelare) were analysed, and a transcriptional database for these two cell types established. Photosynthesis genes were overrepresented in RCCs, providing molecular support for the presence of photosynthetic systems in rays. Genes that putatively encode transporters (vesicle, lipid and metal ion transporters and aquaporins) in RCCs were also identified. In addition, many cell wall-related genes showed cell type-specific expression patterns. Notably, genes involved in pectin metabolism and xyloglucan metabolism were overrepresented in RCCs and FCCs, respectively. The results demonstrate the use of microgenomics to reveal differences in biological processes in neighbouring meristematic cells, and to identify key genes involved in these processes.
DOI: 10.1111/j.1469-8137.2008.02556.x
PubMed: 18631289
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pubmed:18631289Le document en format XML
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<term>Databases, Genetic (MeSH)</term>
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<term>Meristem (genetics)</term>
<term>Meristem (metabolism)</term>
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<front><div type="abstract" xml:lang="en">The vascular cambium is the meristem in trees that produce wood. This meristem consists of two types of neighbouring initials: fusiform cambial cells (FCCs), which give rise to the axial cell system (i.e. fibres and vessel elements), and ray cambial cells (RCCs), which give rise to rays. There is little molecular information on the mechanisms whereby the differing characteristics of these neighbouring cells are maintained. A microgenomic approach was adopted in which the transcriptomes of FCCs and RCCs dissected out from the cambial meristem of poplar (Populus trichocarpa x Populus deltoïdes var. Boelare) were analysed, and a transcriptional database for these two cell types established. Photosynthesis genes were overrepresented in RCCs, providing molecular support for the presence of photosynthetic systems in rays. Genes that putatively encode transporters (vesicle, lipid and metal ion transporters and aquaporins) in RCCs were also identified. In addition, many cell wall-related genes showed cell type-specific expression patterns. Notably, genes involved in pectin metabolism and xyloglucan metabolism were overrepresented in RCCs and FCCs, respectively. The results demonstrate the use of microgenomics to reveal differences in biological processes in neighbouring meristematic cells, and to identify key genes involved in these processes.</div>
</front>
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<Abstract><AbstractText>The vascular cambium is the meristem in trees that produce wood. This meristem consists of two types of neighbouring initials: fusiform cambial cells (FCCs), which give rise to the axial cell system (i.e. fibres and vessel elements), and ray cambial cells (RCCs), which give rise to rays. There is little molecular information on the mechanisms whereby the differing characteristics of these neighbouring cells are maintained. A microgenomic approach was adopted in which the transcriptomes of FCCs and RCCs dissected out from the cambial meristem of poplar (Populus trichocarpa x Populus deltoïdes var. Boelare) were analysed, and a transcriptional database for these two cell types established. Photosynthesis genes were overrepresented in RCCs, providing molecular support for the presence of photosynthetic systems in rays. Genes that putatively encode transporters (vesicle, lipid and metal ion transporters and aquaporins) in RCCs were also identified. In addition, many cell wall-related genes showed cell type-specific expression patterns. Notably, genes involved in pectin metabolism and xyloglucan metabolism were overrepresented in RCCs and FCCs, respectively. The results demonstrate the use of microgenomics to reveal differences in biological processes in neighbouring meristematic cells, and to identify key genes involved in these processes.</AbstractText>
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