Figure 1.

GSNOR1 is a negative regulator of cell death in tomato. Spontaneous cell death occurs on the leaves of tomato plants in which SlGSNOR1 expression was silenced by tobacco rattle virus (TRV)–induced gene silencing. Cell death is not observed in leaves of plants infected with the TRV2-0 empty vector control. Arrows indicate the areas with extensive cell death. The numbers below the figure indicate the number of plants displaying spontaneous cell death of 12 plants. This experiment was repeated three times with similar results.