Related Experiment Video
Updated: May 22, 2026

Analysis of Transgenerational Epigenetic Inheritance in C. elegans Using a Fluorescent Reporter and Chromatin Immunoprecipitation (ChIP)
Published on: May 5, 2023
The epigenetic machinery controlling transgenerational systemic acquired resistance
1The University of Sheffield, Department of Animal and Plant Sciences, Sheffield, UK.
Progeny of diseased Arabidopsis plants inherit enhanced resistance to pathogens. This transgenerational acquired resistance is linked to RNA-directed DNA methylation and hypomethylation, offering new insights into plant defense mechanisms.
Area of Science:
- Plant biology
- Epigenetics
- Plant pathology
Background:
- Plants can develop enhanced resistance to pathogens through priming of defense genes.
- Transgenerational systemic acquired resistance (SAR) provides protection against biotrophic pathogens.
- RNA-directed DNA methylation (RdDM) is a key epigenetic mechanism in plants.
Purpose of the Study:
- To investigate the role of RNA-directed DNA methylation (RdDM) pathway in transgenerational systemic acquired resistance (SAR).
- To understand the epigenetic basis of inherited plant immunity.
Main Methods:
- Analysis of Arabidopsis mutants deficient in RdDM components.
- Assessment of transgenerational SAR in progeny of diseased plants.
- Epigenetic analysis focusing on DNA methylation patterns, specifically at CpNpG sites.
Main Results:
- Mutants in the RdDM pathway exhibit defects in transgenerational SAR.
- Transgenerational SAR is transmitted through epigenetic modifications, specifically hypomethylation at CpNpG sites.
- This epigenetic inheritance primes defense genes in progeny, enhancing resistance.
Conclusions:
- The RNA-directed DNA methylation (RdDM) pathway is crucial for regulating and transmitting transgenerational systemic acquired resistance (SAR).
- Hypomethylation at CpNpG sites is a key epigenetic mark mediating the inheritance of plant immunity.
- Epigenetic mechanisms play a significant role in plant adaptation and defense against pathogens across generations.
More Related Videos
05:55Stable Isotope In-Vivo Labeling for Mass-Spectrometry Identification of Paternal Metabolites Transferred from Sperm to Oocyte During Fertilization
Published on: June 17, 2025
10:28Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers
Published on: September 20, 2018
Related Concept Videos
Epigenetic Regulation
Epigenetic Regulation
X-chromosome...
Epigenetic Regulation
Genomic Imprinting and Inheritance
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Transduction
Inheritance of Chromatin Structures