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Following the Dynamics of Structural Variants in Experimentally Evolved Populations

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Published on: February 3, 2023

Epigenetics and the evolution of virulence.

Takao Kasuga¹, Mark Gijzen

¹Crops Pathology and Genetics Research Unit, United States Department of Agriculture-Agricultural Research Service, Davis, CA, USA.

Trends in Microbiology

|October 8, 2013

Summary

Pathogenic organisms adapt to challenges using epigenetics. This involves changes in effector genes and transposable elements, creating heritable diversity for survival.

Keywords:

avirulence effector immunity plant pathogen

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Area of Science:

Plant pathology
Epigenetics
Microbial adaptation

Background:

Pathogenic and invasive organisms exhibit remarkable adaptability to host and environmental pressures.
Recent research highlights the crucial role of epigenetic processes in enabling this adaptability in plant pathogens.

Purpose of the Study:

To explore how epigenetic mechanisms contribute to the adaptability and survival of plant pathogens.
To understand the role of epiallelic variation and transposable elements in pathogen evolution.

Main Methods:

Analysis of epigenetic modifications in plant pathogens.
Investigating the regulation of effector genes through epiallelic variation.
Studying the de-repression of transposable elements and its impact on transcriptional patterns.

Main Results:

Epiallelic variation in effector genes facilitates pathogen evasion of host immunity.
Epigenetically induced reprogramming of transcriptional patterns occurs via transposable element de-repression.
These epigenetic mechanisms generate adaptable and heritable phenotypic diversity.

Conclusions:

Epigenetic control of gene expression is a key strategy for plant pathogen adaptation.
Phenotypic diversity generated epigenetically enhances pathogen survival and invasiveness.
Epigenetic mechanisms offer a versatile route for generating heritable variation in pathogens.