Related Experiment Video
Updated: Jul 15, 2026
09:23
Determination of DNA Methylation of Imprinted Genes in Arabidopsis Endosperm
Published on: January 28, 2011
17.8K
Dynamics and function of DNA methylation in plants.
Huiming Zhang1,2, Zhaobo Lang3,4, Jian-Kang Zhu5,6,7
1Shanghai Center for Plant Stress Biology, Chinese Academy of Sciences, Shanghai, China. hmzhang@sibs.ac.cn.
Nature Reviews. Molecular Cell Biology
|May 23, 2018
Summary
DNA methylation is a crucial epigenetic process in plants, regulating gene expression and genome stability. This review explores its enzymes, functions, and roles in plant development and stress responses.
Area of Science:
- Plant Biology
- Epigenetics
- Molecular Biology
Background:
- DNA methylation is a vital epigenetic modification in plants.
- It plays a key role in gene regulation and maintaining genome stability.
- Disruptions in DNA methylation patterns can cause developmental issues in plants.
Purpose of the Study:
- To review the mechanisms of DNA methylation in plants.
- To discuss the enzymes involved in methylation and demethylation.
- To explore the functions and regulatory mechanisms of DNA methylation.
Main Methods:
- Literature review of DNA methylation in plants.
- Discussion of methylating and demethylating enzymes.
- Analysis of regulatory pathways and the methylstat mechanism.
Main Results:
- DNA methylation regulates transposon silencing, gene expression, and chromosome interactions.
- It is essential for normal plant development.
- DNA methylation is involved in plant responses to biotic and abiotic stresses.
Conclusions:
- Dynamic regulation of DNA methylation is critical for plant life.
- Understanding DNA methylation is key to addressing plant developmental and stress-related challenges.
Related Concept Videos
01:46Epigenetic Regulation
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
01:29Non-nuclear Inheritance
Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm—such as chloroplasts and mitochondria—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
03:17Inheritance of Chromatin Structures
Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...
01:46Epigenetic Regulation
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
01:37Epigenetic Regulation
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
01:17Phase II Reactions: Methylation Reactions
Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...