Pseudomonas solanacearum

Pseudomonas solanacearum, now known as Ralstonia solanacearum, is a bacterium that causes a significant plant disease called Granville wilt. This pathogen thrives in soil and can infect a wide range of plants, including economically important crops like potatoes, tomatoes, and tobacco.123

The disease typically manifests as stunting, yellowing, and wilting of the plant's above-ground parts. Internally, the roots and lower stem may show dark streaks and decay. Controlling bacterial diseases like Granville wilt can be challenging, but methods include using pathogen-free seeds, crop rotation, and planting resistant varieties.23