Studies on the Lysogenicity of Pseudomonas solanacearum with Special Reference to the New Type Phage Produced from a Doubly Lysogenic Strain
1957 年 32 巻 4 号 p. 113-123
詳細
1957 年 32 巻 4 号 p. 113-123
1. By the infection of S-9 bacteria with T-c200 prophage various responses, lethal productive reversible and lysogenic are observed. Some of doubly lysogenized S-9 (T-c200) bacteria liberate phage with a new-type of host range.
2. By infection with both S-9 and T-c200 phage, non-lysogenic S-IX bacteria can be changed into doubly lysogenic S-IX (S-9, T-c200) forms. In the doubly lysogenic bacterial strain thus formed, the new-type of phage is also produced.
3. When the doubly lysogenic bacteria are isolated it seems that they give rise to cells which produce only one or the other parent type phage. It is concluded that recombination occurs only at the time the doubly lysogenic state is initiated.
