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. 1987 Jan;9(1):19-26.
doi: 10.1007/BF00017983.

Conserved regions in the T-DNA of different Agrobacterium rhizogenes root-inducing plasmids

P Filetici  1 , L Spanò, P Costantino
Affiliations

Conserved regions in the T-DNA of different Agrobacterium rhizogenes root-inducing plasmids

P Filetici et al. Plant Mol Biol. 1987 Jan.

Abstract

The T-regions of the three so far identified types of Ri plasmids-corresponding to the synthesis of three different hairy root opines, agropine, mannopine and cucumopine-have been compared in detail by Southern blot cross hybridizations. Two distinct zones of very strong sequence homology, approximately 4 and 3 kilobases in length respectively, have been identified in all three T-regions. The highly conserved sequences, not present in Ti plasmid T-DNA, may encode essential rhizogenic functions common to all Agrobacterium rhizogenes T-DNAs.

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