Genetic conflicts in budding yeast: The 2μ plasmid as a model selfish element

Area of Science:

• Evolutionary biology
• Genetics
• Microbiology

Background:

• Antagonistic coevolution, driven by genetic conflict, fuels rapid evolution and biological innovation.
• Genetic conflict manifests both between organisms and within genomes.
• Budding yeasts serve as a model system for studying intra- and inter-genomic genetic conflict.

Purpose of the Study:

• To review the evolutionary impact of selfish genetic elements in budding yeasts, focusing on the 2-micron plasmid.
• To highlight the 2-micron plasmid as a model selfish element within Saccharomyces cerevisiae.
• To discuss recent advances and future research directions in the field of yeast genetic conflict.

Main Methods:

• Literature review of studies on genetic conflict and selfish elements in budding yeasts.
• Focus on the 2-micron plasmid in Saccharomyces cerevisiae as a model system.
• Analysis of existing research on host fitness defects associated with the 2-micron plasmid.

Main Results:

• The 2-micron plasmid is prevalent in Saccharomyces cerevisiae laboratory and industrial strains.
• The 2-micron plasmid is known to impose fitness costs on its host.
• Selfish genetic elements, including the 2-micron plasmid, are often overlooked in evolutionary studies.

Conclusions:

• Further research into the evolutionary consequences of the 2-micron plasmid and other selfish elements in yeasts is warranted.
• Understanding genetic conflict within yeasts provides insights into broader evolutionary processes.
• The 2-micron plasmid offers a valuable model for studying the dynamics of selfish genetic elements and their impact on host evolution.