VIGS phenotype in common bean is independent of the BPMV strain used as a source of RNA1. (Upper panels). Symptoms and silencing phenotype of common bean plants treated with HopV or HopN. HopV: RNA1, transcript from BPMV strain K-Hop (moderate/relatively severe in soybean) RNA1 and empty vector (V). HopN: RNA1 transcript from BPMV strain K-Hop plus recombinant RNA2-nod22 (N). (Lower panels). Same as upper panels except that the RNA1 transcript in the treatments HanV and HanN was derived from the mild strain K-Han. Enlarged views of the middle leaflets are shown in the right panels.