Polsinelli M, Baldanzi E, Bazzicalupo M, Gallori E
Mol Gen Genet. 1980;178(3):709-11. doi: 10.1007/BF00337882.
Data are presented which indicate that plasmid pRD1 can be transferred from Escherichia coli to strains of Azospirillum brasilense with a frequency of about 10(-7). The reverse was also possible; in this case the frequency of transfer appeared to be much higher, about 5 x 10(-1). Transfer of the plasmid was also obtained between strains of A. brasilense; in this cross the transfer frequency was very high (about 10(-1)). Moreover the pRD1 plasmid seems very stable in A. brasilense cells.
所呈现的数据表明，质粒pRD1能够以约10^(-7)的频率从大肠杆菌转移至巴西固氮螺菌菌株。反之亦有可能；在这种情况下，转移频率似乎要高得多，约为5×10^(-1)。质粒在巴西固氮螺菌菌株之间也能实现转移；在这种菌间杂交中，转移频率非常高（约为10^(-1)）。此外，pRD1质粒在巴西固氮螺菌细胞中似乎非常稳定。
