DISEASE: Aster yellows
HOST: Watercress
Diseased watercress (left) and healthy plant (right).
![](/sites/default/files/plant_disease/images/0982.jpg)
Aster yellows | Watercress
DISEASE: Aster yellows
HOST: Watercress (Nasturtium officinale)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: W. Borth
DISEASE: Bacterial soft rot (Cladode rot)
HOST: Cactus
Brown necrotic areas of cladodes of Christmas cactus.
![](/sites/default/files/plant_disease/images/0192.jpg)
Bacterial soft rot (Cladode rot) | Cactus
DISEASE: Bacterial soft rot (Cladode rot)
HOST: Cactus (Schlumbergera × buckleyi)
PATHOGEN: Pectobacterium carotovorum
PATHOGEN SYNONYM: Erwinia carotovora subsp. carotovora
SOURCE: A. Alvarez