The Ri pRI 909 and pRI 910 binary vectors are intended for Agrobacterium-mediated plant transformation and contain a region of T-DNA for Arabidopsis, tomato, tobacco, and rice transformation. The origin of the T-DNA is the vir region-lacking Rhizobium (Agrobacterium) rhizogenes Ri plasmid. pRI 909 and pRI 910 are also shuttle vectors and replicate autonomously in E. coli and Rhizobium (Agrobacterium).