ALT Selected region from a photograph of tomato plants. It shows leaf curling and the leaves are purpling from the edges - very diseased plants.

ALT The painting shows a tomato stem, with one cluster of tomatoes and two compound leaves. The red tomatoes are covered in concentric yellow and orange ringspots. The symptoms shown on the leaves are variable, including: darker concentric rings, brown flecks/blotches, leaf ‘purpling’ (shown here as a light brown-green colour), normal (green) portions on the base or the tip of some of the leaves, and dark brown necrotised tissue. The tomato fruit and leaves both have spots with ‘normal-looking’ centres, which is a strong indicator that the cause of the spots is a virus. Bacteria and fungal spots rarely have a healthy middle as infection starts at the centre and spreads outwards.