epigenetic regulation
phrasePronunciation: /ˌɛpɪdʒəˈnɛtɪk rɛgjʊˈleɪʃən/
Heritable changes in gene expression that do not involve alterations to the underlying DNA sequence. Critical mechanism in plant stress memory and transgenerational stress responses.
Full Definition
Epigenetic regulation encompasses DNA methylation, histone modifications, and chromatin remodeling that control gene expression without changing the genetic code. In abiotic stress research, epigenetic mechanisms enable plants to rapidly adjust gene expression in response to environmental challenges and potentially transmit stress-adapted states to offspring. These regulatory systems provide phenotypic plasticity and stress memory, allowing plants to prime their responses for recurring stress conditions. Understanding epigenetic regulation is crucial for developing stress-resilient crops and comprehending long-term adaptation strategies.
Plain English
Chemical tags on DNA and associated proteins that can turn genes on or off without changing the actual genetic code, helping plants remember and respond to stressful conditions.
In Editorial Context
An increasingly important topic in stress research publications that often requires careful explanation of mechanisms and may involve complex experimental designs spanning multiple generations, necessitating extended methodology sections and supplementary materials.
Etymology & History
Coined by Conrad Waddington to describe gene-environment interactions during development, expanded to include molecular mechanisms in 1990s
Initially developmental biology focused, now central to stress biology and evolutionary adaptation research
Usage
"The reviewers requested additional experiments to demonstrate that the observed epigenetic regulation persisted across multiple stress cycles and was not merely a transient response."
Usage note: Requires clear distinction between correlation and causation in experimental design; inheritance studies need multi-generational data
Context: Molecular stress biology papers, developmental plasticity studies, transgenerational research
Region: international
Also known as
Contrasted with
Don't confuse with
Often confused with general gene regulation, but specifically refers to heritable changes not involving DNA sequence alterations