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Fungal transposable elements and genome evolution
1Institut de Génétique et Microbiologie, Université Paris-Sud, Orsay, France.
Genetica
|January 1, 1997
Summary
Transposable elements (TEs) in fungi impact gene function and genome structure. Further research is needed to understand their role in fungal adaptation to environmental changes.
Area of Science:
- Genomics
- Evolutionary Biology
- Mycology
Background:
- Fungal genomes harbor a diverse range of transposable elements (TEs), mirroring those found across eukaryotes.
- Current knowledge primarily stems from studies on plant pathogens, industrial, and field strains, many of which lack a sexual stage.
Purpose of the Study:
- To review the known impacts of TEs on fungal genome structure and function.
- To highlight the evolutionary roles of TEs, including horizontal transfer and sequence dispersal.
- To identify knowledge gaps regarding TE activity and its contribution to fungal adaptation.
Main Methods:
- Literature review of studies on transposable elements in fungal genomes.
- Analysis of documented TE-mediated effects on gene structure and function.
- Synthesis of information on TE roles in genome evolution and horizontal gene transfer.
Main Results:
- TEs can alter gene expression, cause DNA sequence variation, and drive chromosomal rearrangements in fungi.
- TEs contribute to evolution through horizontal transfer and by mobilizing host DNA sequences.
- Silencing mechanisms can regulate TE activity in fungal species with meiosis.
Conclusions:
- TEs significantly influence fungal genome dynamics and evolution.
- Understanding the full extent of TE contributions to fungal genetic variation and adaptation remains a critical area for future research.