RESULTS

(6)

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DISEASE: Hairy root

HOST: Rose

Hairy root symptoms of many fibrous roots (right). Noninfected root (left).

Hairy root | Rose

DISEASE: Hairy root

HOST: Rose (Rosa sp.)

PATHOGEN: Agrobacterium rhizogenes

SOURCE: R. Raabe

DISEASE: Hairy root

HOST: Apple

Crown gall (left) and hairy root (right) caused by Agrobacterium tumefaciens and A. rhizogenes, respectively.

Hairy root | Apple

DISEASE: Hairy root

HOST: Apple (Malus domestica)

PATHOGEN: Agrobacterium rhizogenes

PATHOGEN SYNONYM: Rhizobium sp.

SOURCE: APS

DISEASE: Hairy root

HOST: Rose

Crown gall (left) and hairy root (right) caused by Agrobacterium tumefaciens and A. rhizogenes, respectively. Healthy root (center).

Hairy root | Rose

DISEASE: Hairy root

HOST: Rose (Rosa sp.)

PATHOGEN: Agrobacterium rhizogenes

PATHOGEN SYNONYM: Rhizobium sp.

SOURCE: M. Schroth

DISEASE: Phony disease (Phony peach)

HOST: Peach

Tree with characteristic reduced growth. Foliage is dark green, then turns yellowish. Twigs become brittle and branches die back. Fruit are small.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: P. C. Anderson

DISEASE: Phony disease (Phony peach)

HOST: Peach

Twigs on diseased trees have shortened internodes and increased lateral branching.

Phony disease (Phony peach) | Peach

DISEASE: Phony disease (Phony peach)

HOST: Peach (Prunus persica)

PATHOGEN: Xylella fastidiosa

SOURCE: M. Davis

DISEASE: Syringae leaf spot

HOST: Tomato

Leaves with brown necrotic lesions and chlorotic margins. Symptoms vary greatly among cultivars. Some have black or brown lesions with bright yellow, chlorotic areas and others do not have yellowing.

Syringae leaf spot | Tomato

DISEASE: Syringae leaf spot

HOST: Tomato (Lycopersicon esculentum)

PATHOGEN: Pseudomonas syringae pv. syringae

SOURCE: R. Gitaitis