CRISPR/Cas9-based Genome Editing of Pseudomonas aeruginosa

Clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 system has been developed as a robust genome engineering tool in a variety of organisms attributed to its high efficiency and versatility. In this chapter, we described the detailed procedures of CRISPR-Cas9-based genetic manipulation in Pseudomonas aeruginosa, including precise gene deletion and insertion via Cas9-mediated DNA double-strand break and homologous recombination repair. In addition, we provided a detailed protocol for cytidine base editor, a highly efficient gene inactivation and point mutation tool in Pseudomonas aeruginosa.