Beljanski M, Manigault P, Bourgarel P
Proc Natl Acad Sci U S A. 1972 Jan;69(1):191-5. doi: 10.1073/pnas.69.1.191.
Transforming RNA excreted by showdomycin-resistant Escherichia coli induces a persistent, heritable, and spectacular change in Agrobacterium tumefaciens B(6), a bacterium that carries the oncogenic principle for tumor induction in plants. Transformants possessing new physiological and biochemical properties have completely or partially lost the capacity for tumor induction. They synthetize new ribosomes whose components are profoundly modified. On the basis of biological and biochemical characteristics, one is inclined to consider the completely transformed Agrobacterium tumefaciens as a "new species".
由抗硫链丝菌素的大肠杆菌分泌的转化RNA可诱导根癌土壤杆菌B(6)发生持续、可遗传且显著的变化,根癌土壤杆菌B(6)是一种携带植物肿瘤诱导致癌原理的细菌。具有新生理和生化特性的转化体已完全或部分丧失肿瘤诱导能力。它们合成了成分发生深刻改变的新核糖体。基于生物学和生化特性,人们倾向于将完全转化的根癌土壤杆菌视为一个“新物种”。