| plantsdb

RESULTS

(11)

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lemon)

The term "black pit" refers to black lesions on fruit, which may be specks or large, sunken pits as seen here. They also may be light tan, later becoming reddish brown to black.

DISEASE: Bacterial blast and black pit

HOST: Citrus (Lime)

Characteristic symptoms of brownish black lesions on twigs and leaves (blast), starting with infection of petioles. Black pit refers to brown to black sunken spots on fruit, 5 to 20 mm in diameter.

DISEASE: Blood disease

HOST: Banana

Yellow leaves of dying plant.

DISEASE: Blood disease

HOST: Banana

Cross sections of diseased fruit with reddish discoloration and bacterial ooze.

DISEASE: Blood disease

HOST: Banana

Longitudinal sections (right) exposing reddish brown discoloration of infected fruit.

DISEASE: Blood disease

HOST: Banana

Diseased plant with wilt and yellowing of leaves. The disease occurs in Indonesia and is characterized by bright red discoloration of vascular tissues. It is caused by strains in the Ralstonia solanacearum species complex.

DISEASE: Elm yellows

HOST: Elm

Symptoms of elm yellows occasionally appear on one branch before others, but more often they involve the entire crown.

DISEASE: Elm yellows

HOST: Elm

Diseased twig (right) with epinasty, chlorosis, and yellowing of leaves. Sometimes both yellow and green leaves occur on same branch. Healthy branch (left).

DISEASE: Elm yellows

HOST: Elm

Branches with butterscotch discoloration (center) and necrotic flecks in phloem and vascular cambium (right). Healthy branch (left). Sudden wilt and browning is common with small trees.