Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"RNA-directed DNA methylation"”.
-
Dynamic regulation of DNA demethylation and RNA-directed DNA methylation in Arabidopsis
<p>DNA methylation is an important epigenetic mark present in many eukaryotes, and is involved in many crucial biological processes, such as gene imprinting, regulation of gene expression, and genome stability. Proper genomic DNA methylation patterns are achieved through the concerted action of DNA …
-
An Investigation into the Evolution and Function of RNA-Directed DNA Methylation and its Component Proteins
RNA-directed DNA methylation (RdDM) is a major epigenetic pathway in plants that is required to establish methylation in all contexts and maintain CHH methylation. The function of RdDM is mediated by multiple proteins that are still being characterized in land plants. Pol IV and Pol V form a major …
-
Molecular Genetic Analysis of Non-Catalytic Pol IV and V Subunits
… have the distinction of encoding multisubunit RNA polymerases used exclusively for RNA directed DNA Methylation: RdDM) in addition to Pol I, II, and III. In Arabidopsis thaliana, Pol IV is required for the biogenesis of 24nt siRNAs whereas Pol V transcription is needed for cytosine methylation …
-
Regulation of Active DNA Demethylation and its Role in Fertility in Arabidopsis thaliana
… control over the balance between de novo methylation, maintenance of existing methylation, and active demethylation as it utilizes these processes to facilitate gene expression changes throughout the lifetime of the plant. Expression of the DNA demethylase REPRESSOR OF SILENCING1 (ROS1) is …
-
Small non-coding RNA-mediated epigenetic regulation of gene expression and its implications for wheat adaptation to continuous cultivation
… to continuous cultivation. Chapter II entitled "RNA-directed DNA methylation (RdDM) modulates the trade-off between growth and defense and contributes to wheat adaptation to continuous cultivation" investigates the possible contribution of epigenetic modifications to wheat adaptation to long-term …
-
Genetic and Biochemical Properties of Arabidopsis RNA Polymerases IV and V
RNA Polymerases IV and V: Pol IV and Pol V) are plant-specific enzyme complexes with subunit homology to RNA Polymerase II: Pol II). The largest subunits in Pol IV and Pol V, NRPD1 and NRPE1 respectively, share a second largest subunit, NRPD2/NRPE2. The evolutionarily conserved Metal A and Metal B …