Sagai H, Uyobe S, Mitsuhashi S
J Bacteriol. 1977 Sep;131(3):765-9. doi: 10.1128/jb.131.3.765-769.1977.
Esamining 12 plasmids in Pseudomonas aeruginosa, we found two types of interaction in their transfer (inhibition and facilitation), using donor cells carrying two compatible plasmids. (i) Ten plasmids representing incompatibility groups P-1, P-2, P-5, P-6, and P-7 were all transmissible at a high frequency, 10-2 to 10-1, except for one with a lower frequency of about 10-3. The transfer of P-5 plasmids was inhibited by P-2 plasmids reciprocally or unilaterally, and the unilateral transfer inhibition was observed in other combinations between plasmids belonging to groups P-1, P-2, P-6, and P-7. It was characteristic of Pseudomonas plasmids that most plasmids with high transferability inhibited the transfer of other coexisting plasmids without distinct inhibition of their own transfer. (ii) Two plasmids, Rms149 of P-8 group and Rlb679, which was not classified, were transmissible at an exceptionally low frequency of 10-7 to 10-6, but their transfer was facilitated by plasmids with high transferability.
在对铜绿假单胞菌中的12种质粒进行检测时，我们使用携带两种相容质粒的供体细胞，发现了它们在转移过程中的两种相互作用类型（抑制和促进）。（i）代表不相容群P - 1、P - 2、P - 5、P - 6和P - 7的10种质粒都能以10⁻²至10⁻¹的高频进行转移，只有一种转移频率较低，约为10⁻³。P - 5质粒的转移会被P - 2质粒相互或单方面抑制，并且在属于P - 1、P - 2、P - 6和P - 7组的质粒之间的其他组合中也观察到了单方面的转移抑制。铜绿假单胞菌质粒的特点是，大多数具有高转移能力的质粒会抑制其他共存质粒的转移，而对自身转移没有明显抑制。（ii）两种质粒，P - 8组的Rms149和未分类的Rlb679，转移频率极低，为10⁻⁷至10⁻⁶，但具有高转移能力的质粒会促进它们的转移。
