DeWitt J P
J Bacteriol. 1985 Nov;164(2):969-71. doi: 10.1128/jb.164.2.969-971.1985.
A lethal zygosis-sensitive mutant of Streptomyces erythreus, ER720, was isolated. Pocks were formed when spores of the parental type were plated on a lawn of ER720, suggesting the loss of a transmissible plasmid, SEP1, from this strain. Recombination did not occur between derivatives of ER720 lacking SEP1, but it did occur if SEP1 was transferred to one of these strains or if these strains were crossed with other strains containing SEP1. SEP1 could also be transferred at high frequency between strains. This is consistent with SEP1 acting as a sex factor in S. erythreus.
分离出了一种红霉素链霉菌的致死性合子敏感突变体ER720。当亲本型孢子接种在ER720菌苔上时会形成噬菌斑，这表明该菌株失去了一种可传递的质粒SEP1。缺乏SEP1的ER720衍生物之间不会发生重组，但如果将SEP1转移到其中一个菌株中，或者如果这些菌株与其他含有SEP1的菌株杂交，则会发生重组。SEP1也可以在菌株之间高频转移。这与SEP1作为红霉素链霉菌中的性因子的作用一致。
