Method | Technique feature | Integration efficiency (%) | Integration sites | Maximum integration size (kb) | Rounds of integration | Marker left or markerless | Reference |
---|---|---|---|---|---|---|---|
I-SceI endonuclease | Combined λ-Red and I-SceI Cleavage | 19.2–100 | Desired locus | 7 | One | Markerless | [5] |
λ-Red recombination | λ-Red assisted | 0–50 | Desired locus | 7.3 | One | Markerless | [7] |
λ-Red recombination | Combined λ-Red and CRISPR/Cas9 | 10 | Desired locus | 7 | One | Markerless | [33] [9] |
60 | 15.4 | Five | Markerless | ||||
λ-Red recombination | λ-Red assisted | Not provide | fliK | 15 | Four | Markerless | |
Not provide | fliK | 50 | Seven | Markerless | |||
CRISPR/Cas9 | Combined λ-Red and CRISPR/Cas9 | 60 | Desired locus | 7 | One | Markerless | [12] |
CRISPR/Cas9 | Combined λ-Red and CRISPR/Cas9 | 50 | Desired locus | 10 | One | Markerless | [13] |
RecA homologous recombination | Combined λ-Red, RecA and CRISPR/Cas9 | 100 | IS5 | 12 | One | Markerless | This study |