RealFeedApp Fitness effect of CRISPR immunity varies between phages
The study found that the availability of resistance mutations negatively impacts the fitness advantage of CRISPR immunity in Pseudomonas aeruginosa. This effect varies predictably across different virulent phages.
- Field
- microbes and viruses
- What they did
- Researchers demonstrated that for Pseudomonas aeruginosa bacteria protected by the CRISPR system, survival strongly depends on the specific type of virus they encounter, rather than always providing a benefit.
- Why it matters
- This understanding helps explain how bacteria evolve in their battle against viruses and why some strains lose CRISPR protection to mutate faster and become resistant to attacks.
#crispr#pseudomonas aeruginosa#bacteriophage#resistance mutation#evolution
