Epigenetic control of transposon transcription and mobility in Arabidopsis
| Autor: | Etienne Bucher, Marie Mirouze, Jon Reinders |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
0106 biological sciences
Transposable element DNA Plant ADN Arabidopsis Genomics Plant Science Biology PLANTE 01 natural sciences Genome Epigenesis Genetic MODELE Evolution Molecular 03 medical and health sciences Gene Expression Regulation Plant Stress Physiological TRANSPOSON Epigenetics TRANSCRIPTION Gene MUTATION 030304 developmental biology Genetics Regulation of gene expression 0303 health sciences Models Genetic food and beverages GENETIQUE DNA Methylation biology.organism_classification MODELISATION EXPRESSION DES GENES EVOLUTION GENOME Organ Specificity DNA methylation Mutation DNA Transposable Elements Genome Plant 010606 plant biology & botany EPIGENESE |
| Zdroj: | Current opinion in plant biology |
| ISSN: | 1879-0356 |
| Popis: | The mobility of genetic elements called transposable elements (TEs) was discovered half a century ago by Barbara McClintock. Although she had recognized them as chromosomal controlling elements, for much of the consequent time TEs were primarily considered as parasites of the host genome. However the recent explosion of discoveries in the fields of genomics and epigenetics have unambiguously shown the importance of TEs in genome function and evolution. Bursts of endogenous TEs have been reported in plants with epigenetic misregulation, revealing the molecular mechanisms underlying their control. We review here the different steps in TE invasion of the host genome involving epigenetic control and environmental stress responses. As TEs propagate in plant genomes and attract epigenetic marks, their neo-insertions can lead to the formation of new, heritable epigenetic variants (epialleles) of genes in their vicinity and impact on host gene regulatory networks. The epigenetic interplay between TE and genes thus plays a crucial role in the TE-host co-evolution. |
| Databáze: | OpenAIRE |
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