RESULTS

(14)

FILTER

DISEASE: Apple proliferation

HOST: Apple

Enlarged stipules on leaf. Witches'-brooms, rosettes, and enlarged stipules are the most reliable symptoms for identification.

Apple proliferation | Apple

DISEASE: Apple proliferation

HOST: Apple (Malus domestica 'Granny Smith')

PATHOGEN: 'Candidatus Phytoplasma mali'

PATHOGEN SYNONYM: Phytoplasma Apple proliferation group

SOURCE: M. Wolf, W. Schweigkofler

DISEASE: Multiplier disease

HOST: Strawberry

Multiplier disease causes production of numerous crowns along runners.

Multiplier disease | Strawberry

DISEASE: Multiplier disease

HOST: Strawberry (Fragaria × ananassa)

PATHOGEN: 'Candidatus Phytoplasma trifolii'

PATHOGEN SYNONYM: Phytoplasma Clover proliferation group

SOURCE: M. Clark

DISEASE: Witches'-broom

HOST: Alfalfa

Alfalfa plant (center) exhibiting stunting and proliferation of stems. Other symptoms are small, rounded, chlorotic, often puckered leaves and a yellowish cast.

Witches'-broom | Alfalfa

DISEASE: Witches'-broom

HOST: Alfalfa (Medicago sativa)

PATHOGEN: 'Candidatus Phytoplasma trifolii'

PATHOGEN SYNONYM: Phytoplasma Clover proliferation group

SOURCE: S. Thomson

DISEASE: Witches'-broom

HOST: Alfalfa

Young plant (left) with small, numerous stems (witches'-broom). Healthy stems (right).

Witches'-broom | Alfalfa

DISEASE: Witches'-broom

HOST: Alfalfa (Medicago sativa)

PATHOGEN: 'Candidatus Phytoplasma trifolii'

PATHOGEN SYNONYM: Phytoplasma Clover proliferation group

SOURCE: S. Thomson

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