RESULTS

(3)

FILTER

DISEASE: Aster yellows

HOST: Kalanchoe

Kalanchoe with malformed inflorescences.

Aster yellows | Kalanchoe

DISEASE: Aster yellows

HOST: Kalanchoe (Kalanchoe sp.)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: R. Raabe

DISEASE: Bacterial leaf spot

HOST: Croton

Leaves with dry, irregularly shaped, brown necrotic areas.

Bacterial leaf spot | Croton

DISEASE: Bacterial leaf spot

HOST: Croton (Codiaeum variegatum)

PATHOGEN: Xanthomonas codiaei

SOURCE: A. Chase

DISEASE: Bacterial wilt

HOST: Squash

Field with severe symptoms of wilt. Foliage often is chlorotic and leaf margins may be chlorotic and necrotic before plant death. Bacterial ooze may be seen streaming from the xylem when infected stems are cut.

Bacterial wilt | Squash

DISEASE: Bacterial wilt

HOST: Squash (Cucurbita maxima)

PATHOGEN: Erwinia tracheiphila

SOURCE: B. Jacobsen, M. Shurtleff