Clavibacter michiganensis subsp. insidiosus

Healthy lucerne plants (left) or attacked by
C. michiganensis subsp. insidiosus (right). APS, St Paul (US)

Cross sections of a healthy root (right)
and diseased roots (left) of lucerne
infected by C. michiganensis subsp. insidiosus.
APS, St Paul (US)

Discoloured stele (left) and pockets
of infection on inner surface of
bark (right) of lucerne infected by
C. michiganensis subsp. insidiosus. APS, St Paul (US)