RESULTS

(5)

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DISEASE: Bacterial fasciation

HOST: Geranium

Plant with proliferation of shoots at crown.

Bacterial fasciation | Geranium

DISEASE: Bacterial fasciation

HOST: Geranium (Pelargonium grandiflorum)

PATHOGEN: Rhodococcus fascians

SOURCE: M. Daughtrey

DISEASE: Bacterial fasciation

HOST: Papaya

Fasciation symptoms of papaya. Causal agent is unknown.

Bacterial fasciation | Papaya

DISEASE: Bacterial fasciation

HOST: Papaya (Carica papaya)

PATHOGEN: Causal agent unknown

SOURCE: A. Alvarez

DISEASE: Carrot yellows

HOST: Carrot

Flowers with shoot proliferation (witches’-broom) (left). Healthy flower (right). Virescence and phyllody of flower parts are common.

Carrot yellows | Carrot

DISEASE: Carrot yellows

HOST: Carrot (Daucus carota)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: M. Schroth

DISEASE: Carrot yellows

HOST: Carrot

Carrot with proliferation of roots. Initial symptoms include yellowing and narrowing of veins of young leaves. The entire leaf later becomes necrotic.

Carrot yellows | Carrot

DISEASE: Carrot yellows

HOST: Carrot (Daucus carota)

PATHOGEN: 'Candidatus Phytoplasma asteris'

PATHOGEN SYNONYM: Phytoplasma Aster yellows group

SOURCE: G. S. Abawi

DISEASE: X-disease (Peach yellow leaf roll)

HOST: Peach

Peach twig with yellow, curled (rolled) leaves.

X-disease (Peach yellow leaf roll) | Peach

DISEASE: X-disease (Peach yellow leaf roll)

HOST: Peach (Prunus persica)

PATHOGEN: 'Candidatus Phytoplasma mali'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: W. Sinclair