RESULTS

(16)

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DISEASE: Black rot

HOST: Cabbage

V-shaped necrotic areas at leaf margins and insect damage caused by diamondback moth.

Black rot | Cabbage

DISEASE: Black rot

HOST: Cabbage (Brassica oleracea var. capitata)

PATHOGEN: Xanthomonas campestris pv. campestris

SOURCE: M. Goto

DISEASE: Black rot

HOST: Cabbage

Black necrotic vascular bundles in stem tissues.

Black rot | Cabbage

DISEASE: Black rot

HOST: Cabbage (Brassica oleracea var. capitata)

PATHOGEN: Xanthomonas campestris pv. campestris

SOURCE: J. Cho

DISEASE: Black rot

HOST: Cabbage

V-shaped necrotic lesions at leaf margins.

Black rot | Cabbage

DISEASE: Black rot

HOST: Cabbage (Brassica oleracea var. capitata)

PATHOGEN: Xanthomonas campestris pv. campestris

SOURCE: R. Campbell

DISEASE: Bunch disease

HOST: Pecan

Pecan exhibiting bunch symptoms at ends of branches. This disease is thought to be caused by a phytoplasma similar to the walnut bunch pathogen in the X-disease group.

Bunch disease | Pecan

DISEASE: Bunch disease

HOST: Pecan (Carya illinoinensis)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: W. Sinclair

DISEASE: Bunch disease

HOST: Pecan

Severe case of bunch disease. Note bunches of foliage.

Bunch disease | Pecan

DISEASE: Bunch disease

HOST: Pecan (Carya illinoinensis)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: P. Bertrand

DISEASE: Witches'-broom

HOST: Pecan

Diseased pecan with short branches on trunk with witches'-broom appearance.

Witches'-broom | Pecan

DISEASE: Witches'-broom

HOST: Pecan (Carya illinoinensis)

PATHOGEN: 'Candidatus Phytoplasma pruni'

PATHOGEN SYNONYM: Phytoplasma X-disease group

SOURCE: P. Bertrand

DISEASE: Xanthomonas leaf spot

HOST: Cabbage

Cabbage leaf with small lesions. Lesions may enlarge and coalesce, causing distortion. Stem lesions are black and sunken and may cause death of the plants.

Xanthomonas leaf spot | Cabbage

DISEASE: Xanthomonas leaf spot

HOST: Cabbage (Brassica oleracea var. capitata)

PATHOGEN: Xanthomonas campestris pv. raphani

SOURCE: R. Gitaitis