<i>Ralstonia solanacearum</i> Race 3 Biovar 2 Causes Tropical Losses and Temperate Anxieties

Fig. 5. Grey-brown discoloration of vascular tissues (vascular ring) and bacterial ooze in potato tuber infected by R. solanacearum (photo courtesy of K. Tsuchiya, Japan).



Image from Plant Health Progress article:
Ralstonia solanacearum Race 3 Biovar 2 Causes Tropical Losses and Temperate Anxieties