RESULTS

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DISEASE: Elm leaf scorch

HOST: Elm

Diseased tree with scorch at leaf margins.

Elm leaf scorch | Elm

DISEASE: Elm leaf scorch

HOST: Elm (Ulmus americana)

PATHOGEN: Xylella fastidiosa

SOURCE: J. Sherald, M. Shurtleff

DISEASE: Elm leaf scorch

HOST: Elm

Severely diseased tree with dieback and scorched leaves.

Elm leaf scorch | Elm

DISEASE: Elm leaf scorch

HOST: Elm (Ulmus americana)

PATHOGEN: Xylella fastidiosa

SOURCE: W. Sinclair

DISEASE: Internal yellowing

HOST: Papaya

Yellow discoloration of flesh. The affected area is soft and has an acrid odor.

Internal yellowing | Papaya

DISEASE: Internal yellowing

HOST: Papaya (Carica papaya)

PATHOGEN: Enterobacter cloacae

SOURCE: K. Nishijima

DISEASE: Strawberry yellows

HOST: Strawberry

Symptoms of disease are stunting and marginal chlorosis of younger leaves and purple or bronze pigmentation of older leaves. Infected plants usually die.

Strawberry yellows | Strawberry

DISEASE: Strawberry yellows

HOST: Strawberry (Fragaria × ananassa)

PATHOGEN: 'Candidatus Phytoplasma' sp.

PATHOGEN SYNONYM: Phytoplasma (undefined)

SOURCE: R. S. Greber