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Updated: Aug 8, 2025
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Purification of High Molecular Weight Genomic DNA from Powdery Mildew for Long-Read Sequencing
Published on: March 31, 2017
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Long-term and rapid evolution in powdery mildew fungi
Stefan Kusch1, Jiangzhao Qian1, Anne Loos1
1Unit of Plant Molecular Cell Biology, Institute for Biology I, RWTH Aachen University, Aachen, Germany.
Molecular Ecology
|March 2, 2023
Summary
Powdery mildew fungi rapidly evolve to overcome plant defenses and fungicide resistance. Their plastic genomes, driven by transposable elements, facilitate adaptation and host range expansion, posing future pandemic risks.
Area of Science:
- Plant Pathology
- Evolutionary Biology
- Genomics
Background:
- Powdery mildew fungi (Erysiphaceae) are widespread pathogens affecting over 10,000 plant hosts globally.
- These obligate biotrophic fungi exhibit diverse morphology, lifestyles, and host ranges.
Purpose of the Study:
- To review the evolution, diversity, and adaptation mechanisms of powdery mildew fungi.
- To highlight their ability to overcome plant immunity, develop fungicide resistance, and expand host ranges.
Main Methods:
- Review of existing literature on powdery mildew evolution and genomics.
- Analysis of genomic and proteomic data, particularly from cereal powdery mildews (Blumeria).
Main Results:
- Transposable elements significantly shape powdery mildew genomes, contributing to adaptive architecture and novel virulence factors.
- Candidate secreted effector proteins, encoded by transposons, are key in overcoming plant immunity.
- Rapid evolution of effectors through sequence diversification and copy number variation drives pathogen adaptation.
Conclusions:
- Powdery mildew fungi possess highly plastic genomes enabling rapid adaptation to plant immunity, host barriers, and fungicides.
- These adaptive capabilities foreshadow increased risks of outbreaks, host shifts, and potential pandemics.
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