Nucleotide Sequence of the rol Region of the Mikimopine-type Root-inducing Plasmid pRi1724

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The rolgenes of root-inducing plasmids (pRi) are essential for tumorigenesis on various dicotyledonous plants. The nucleotide sequences of the rol genes together with their flanking regions from the mikimopine-type pRi1724 were analyzed and compared with the corresponding portions of the agropine-type pRiA4 and the mannopine-type pRi8196 that were previously reported [Slightom et al. , J. Biol. Chem. , 261 108-1210(1986) ; Hansen et al. , Proc. Natl. Acad. Sci. U. S. A. , 88, 7763-7767 (1991)]. The sequenced region of 8967bp contained seven ORFs, five on the upper strand and two on the lower one. These ORFs resembled the ORFs 8, 10 (rolA), 11 (rolB), 12 (rolC), 13, 13a, and 14 of pRiA4 and pRi8196. However, the similarity of the rolA BC genes, particularly rolA, among the three plasmids, was considerably lower than that of other ORFs. The spacer regions between the ORFs were also conserved, but to a smaller extent than ORFs, among the three plasmids.
社団法人日本農芸化学会の論文
1994-03-23