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14:41
RNA Blot Analysis for the Detection and Quantification of Plant MicroRNAs
Published on: July 11, 2020
Small RNAs and heritable epigenetic variation in plants
Donna M Bond1, David C Baulcombe1
1Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK.
Trends in Cell Biology
|September 10, 2013
Summary
Plant epigenetic inheritance differs from mammals due to RNA-based small RNA systems and active DNA methyltransferases during reproduction. These mechanisms enable heritable epigenetic marks, influencing plant phenotypes across generations.
Area of Science:
- Plant Biology
- Epigenetics
- Genetics
Background:
- Phenotype inheritance in plants may rely more on epigenetics than in mammals.
- Plants possess a unique RNA-based system involving small RNAs (sRNAs).
- DNA methyltransferases in plants are active during gametogenesis and embryogenesis, unlike in mammals.
Purpose of the Study:
- To explain why epigenetic inheritance is more prevalent in plants than mammals.
- To highlight the role of RNA-based mechanisms in plant epigenetic inheritance.
- To discuss examples of how plant epigenetic mechanisms influence heritable phenotypes.
Main Methods:
- Review of recent studies on plant epigenetics and inheritance.
- Analysis of RNA-based systems and DNA methylation in plants.
- Discussion of stress effects and hybrid genome interactions in plants.
Main Results:
- Plants utilize a small RNA (sRNA) system for de novo DNA methylation establishment and maintenance.
- Epigenetic DNA methylation marks in plants can be transmitted between somatic cells and across generations.
- Plant DNA methyltransferases facilitate the persistence of methylation patterns from parent to progeny.
Conclusions:
- RNA-based mechanisms and active DNA methyltransferases contribute to robust epigenetic inheritance in plants.
- Stress and hybrid genome interactions exemplify how plant RNA-based systems influence heritable phenotypes.
- Epigenetic mechanisms provide a significant route for adaptive inheritance in plants.
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