Non-Coding RNA Transcription and RNA-Directed DNA Methylation in Arabidopsis
نویسندگان
چکیده
منابع مشابه
RNA-directed DNA methylation in Arabidopsis.
In plants, double-stranded RNA that is processed to short RNAs approximately 21-24 nt in length can trigger two types of epigenetic gene silencing. Posttranscriptional gene silencing, which is related to RNA interference in animals and quelling in fungi, involves targeted elimination of homologous mRNA in the cytoplasm. RNA-directed DNA methylation involves de novo methylation of almost all cyt...
متن کاملRNA-directed DNA methylation.
Double-stranded RNAs (dsRNAs) and their 'diced' small RNA products can guide key developmental and defense mechanisms in eukaryotes. Some RNA-directed mechanisms act at a post-transcriptional level to degrade target messenger RNAs. However, dsRNA-derived species can also direct changes in the chromatin structure of DNA regions with which they share sequence identity. For example, plants use suc...
متن کاملRNA-directed DNA methylation.
DNA methylation is an important epigenetic mechanism for silencing transposons and other repetitive elements, and for stable repression of specific transgenes and endogenous genes. Plants can utilize small interfering RNAs (siRNAs) to guide de novo DNA methyltransferases for the establishment of sequence-specific DNA methylation. Genetic and biochemical approaches have identified many component...
متن کاملRNA-directed DNA methylation requires stepwise binding of silencing factors to long non-coding RNA
Ribonucleic acid-mediated transcriptional gene silencing (known as RNA-directed DNA methylation, or RdDM, in Arabidopsis thaliana) is important for influencing gene expression and the inhibition of transposons by the deposition of repressive chromatin marks such as histone modifications and DNA methylation. A key event in de novo methylation of DNA by RdDM is the production of long non-coding R...
متن کاملSalt-induced transcription factor MYB74 is regulated by the RNA-directed DNA methylation pathway in Arabidopsis
Salt stress is one of the major abiotic stresses in agriculture worldwide that causes crop failure by interfering with the profile of gene expression and cell metabolism. Transcription factors and RNA-directed DNA methylation (RdDM) play an important role in the regulation of gene activation under abiotic stress in plants. This work characterized AtMYB74, a member of the R2R3-MYB gene family, w...
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ژورنال
عنوان ژورنال: Molecular Plant
سال: 2014
ISSN: 1674-2052
DOI: 10.1093/mp/ssu075