Ralstonia solanacearum

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Bacterial ooze exuding from eye of potato tuber. Central Science Laboratory, York (GB) - British Crown	External symptoms on potato tuber. Plant Protection Service, Wageningen (NL)	Typical brown discoloration of the vascular ring and slime oozing from the infected tissue. Black necrotic tissue is due to secondary rot. Plant Protection Service, Wageningen (NL)


Transverse sections of potato tubers showing browning and necrosis of the vascular ring and immediately surrounding tissues. Ministry of Agriculture (TR)	Potato plant in pot showing wilt symptoms. Central Science Laboratory, York (GB) - British Crown	Wilt symptoms on a potato plant. Plant Protection Service, Wageningen (NL)