Fig. 1.
Schematic structure of the recombinant plasmid pBI 121-S used for Agrobacterium-mediated transformation of potato plants. The DNA sequence encoding for S protein of IBV was cloned into the downstream of the CaMV 35S promoter of a binary plasmid pBI 121. This region contains the nptII expression cassette providing kanamycin resistance, the left (LB) and right (RB) borders of transferred DNA for genetic analysis of the transformed plants.