Effect of silencing suppressors on 10.6.1 plants. Three leaves (positions 3-5 from the bottom) of 10.6.1 plants were infiltrated with Agrobacterium strains expressing different RNA silencing suppressors or with a control Agrobacterium containing an empty vector. Two second agroinfiltrated leaves are shown under UV light at 11 days post infiltration. The agroinfiltrated area is marked with a dotted white line. Scale bar: 0.5 cm.