DISEASE: Bacterial spot
HOST: Peach
Fruit infected late in the season.
Bacterial spot | Peach
DISEASE: Bacterial spot
HOST: Peach (Prunus persica)
PATHOGEN: Xanthomonas arboricola pv. pruni
PATHOGEN SYNONYM: Xanthomonas campestris pv. pruni
SOURCE: T. Burr
DISEASE: Bacterial spot
HOST: Peach
Reddish lesions on young twig (left). Dead buds are visible (right), the result of previous year's infection of twig.
Bacterial spot | Peach
DISEASE: Bacterial spot
HOST: Peach (Prunus persica)
PATHOGEN: Xanthomonas arboricola pv. pruni
PATHOGEN SYNONYM: Xanthomonas campestris pv. pruni
SOURCE: D. Ritchie
DISEASE: Bacterial spot
HOST: Peach
Leaves with water-soaked and necrotic spots.
Bacterial spot | Peach
DISEASE: Bacterial spot
HOST: Peach (Prunus persica)
PATHOGEN: Xanthomonas arboricola pv. pruni
PATHOGEN SYNONYM: Xanthomonas campestris pv. pruni
SOURCE: D. Ritchie
DISEASE: Bacterial wilt
HOST: Geranium
Necrotic, umbrella-like appearance of infected leaves, an early stage of disease. Lower leaves become yellow and necrosis develops as the disease progresses. V-shaped necrosis is typical of other systemic diseases.
Bacterial wilt | Geranium
DISEASE: Bacterial wilt
HOST: Geranium (Pelargonium sp.)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: M. Daughtrey
DISEASE: Bacterial wilt
HOST: Geranium
Cross section of wilted geranium with infected vascular tissues and bacterial ooze.
Bacterial wilt | Geranium
DISEASE: Bacterial wilt
HOST: Geranium (Pelargonium sp.)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: M. Daughtrey
DISEASE: Bacterial wilt
HOST: Geranium
Geranium with stem rot and wilt.
Bacterial wilt | Geranium
DISEASE: Bacterial wilt
HOST: Geranium (Pelargonium sp.)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: M. Daughtrey
DISEASE: Bacterial wilt
HOST: Geranium
Rot and browning of diseased stems.
Bacterial wilt | Geranium
DISEASE: Bacterial wilt
HOST: Geranium (Pelargonium sp.)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: M. Daughtrey
DISEASE: Crown gall
HOST: Peach
Crown gall on peach rootstock.
Crown gall | Peach
DISEASE: Crown gall
HOST: Peach (Prunus persica)
PATHOGEN: Agrobacterium tumefaciens
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