Changes to the cytosine methylation status of DNA, driven by the activity of C5 methyltransferases (C5-MTases) and demethylases, exert an important influence over development, transposon movement, gene expression and imprinting. Three groups of C5-MTase enzymes have been identified in plants, namely MET (methyltransferase 1), CMT (chromomethyltransferases) and DRM (domains rearranged methyltransferases). Here the repertoire of genes encoding C5-MTase and demethylase by the globe artichoke (Cynara cardunculus var. scolymus) is described, based on sequence homology, a phylogenetic analysis and a characterization of their functional domains. A total of ten genes encoding C5-MTase (one MET, five CMTs and four DRMs) and five demethylases was identified. An analysis of their predicted product's protein structure suggested an extensive level of conservation has been retained by the C5-MTases. Transcriptional profiling based on quantitative real time PCR revealed a number of differences between the genes encoding maintenance and de novo methyltransferases, sometimes in a tissue- or development-dependent manner, which implied a degree of functional specialization.

The genome-wide identification and transcriptional levels of DNA methyltransferases and demethylases in globe artichoke

Gianoglio, Silvia;Moglia, Andrea;Acquadro, Alberto;Comino, Cinzia
;
Portis, Ezio
Last
2017

Abstract

Changes to the cytosine methylation status of DNA, driven by the activity of C5 methyltransferases (C5-MTases) and demethylases, exert an important influence over development, transposon movement, gene expression and imprinting. Three groups of C5-MTase enzymes have been identified in plants, namely MET (methyltransferase 1), CMT (chromomethyltransferases) and DRM (domains rearranged methyltransferases). Here the repertoire of genes encoding C5-MTase and demethylase by the globe artichoke (Cynara cardunculus var. scolymus) is described, based on sequence homology, a phylogenetic analysis and a characterization of their functional domains. A total of ten genes encoding C5-MTase (one MET, five CMTs and four DRMs) and five demethylases was identified. An analysis of their predicted product's protein structure suggested an extensive level of conservation has been retained by the C5-MTases. Transcriptional profiling based on quantitative real time PCR revealed a number of differences between the genes encoding maintenance and de novo methyltransferases, sometimes in a tissue- or development-dependent manner, which implied a degree of functional specialization.
12 (7)
e0181669
1
17
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0181669
Chromosome Mapping; Chromosomes, Plant; Cynara scolymus; DNA (Cytosine-5-)-Methyltransferase; Gene Expression Profiling; Gene Expression Regulation, Enzymologic; Gene Expression Regulation, Plant; Genome, Plant; Histone Demethylases; Isoenzymes; Models, Molecular; Phylogeny; Plant Proteins; Protein Conformation; Reverse Transcriptase Polymerase Chain Reaction; Biochemistry, Genetics and Molecular Biology (all); Agricultural and Biological Sciences (all)
Gianoglio, Silvia; Moglia, Andrea; Acquadro, Alberto; Comino, Cinzia; Portis, Ezio
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/1651779
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