DISEASE: Aster yellows
HOST: Squash
Diagnostic characteristics for the disease are yellowing of young leaves, proliferation of secondary shoots, and rigid erect habit. Leaves are misshapen and smaller than normal and have stiff, thick laminae.
Aster yellows | Squash
DISEASE: Aster yellows
HOST: Squash (Cucurbita sp.)
PATHOGEN: 'Candidatus Phytoplasma asteris'
PATHOGEN SYNONYM: Phytoplasma Aster yellows group
SOURCE: S. Miller
DISEASE: Bacterial bud and petal blight
HOST: Orchid
Miltonia orchid with brownish necrotic areas around edges of flower petals.
Bacterial bud and petal blight | Orchid
DISEASE: Bacterial bud and petal blight
HOST: Orchid (Miltonia sp.)
PATHOGEN: Acidovorax cattleyae
SOURCE: R. Raabe
DISEASE: Bacterial bud and petal blight
HOST: Orchid
Miltonia orchid with diseased water-soaked flower buds.
Bacterial bud and petal blight | Orchid
DISEASE: Bacterial bud and petal blight
HOST: Orchid (Miltonia sp.)
PATHOGEN: Acidovorax cattleyae
SOURCE: R. Raabe
DISEASE: Bacterial leaf blight and rot
HOST: Orchid
Orchid hybrid (Miltonia × Bert Field 'Eileen') with water-soaked, discolored area near base of leaf.
Bacterial leaf blight and rot | Orchid
DISEASE: Bacterial leaf blight and rot
HOST: Orchid (Miltonia sp.)
PATHOGEN: Burkholderia gladioli pv. gladioli
PATHOGEN SYNONYM: Pseudomonas gladioli pv. gladioli
SOURCE: L. Keith
DISEASE: Bacterial wilt
HOST: Carnation
Carnation stem with cankers and cracks. Yellow sticky bacterial slime is often seen.
Bacterial wilt | Carnation
DISEASE: Bacterial wilt
HOST: Carnation (Dianthus caryophyllus)
PATHOGEN: Burkholderia caryophylli
PATHOGEN SYNONYM: Pseudomonas caryophylli
SOURCE: E. Hellmers, Royal Veterinary & Agricultural University
DISEASE: Bacterial wilt
HOST: Carnation
Severely diseased and withered plants.
Bacterial wilt | Carnation
DISEASE: Bacterial wilt
HOST: Carnation (Dianthus caryophyllus)
PATHOGEN: Burkholderia caryophylli
PATHOGEN SYNONYM: Pseudomonas caryophylli
SOURCE: T. Saito, M. Goto
DISEASE: Bacterial wilt
HOST: Carnation
Sliced stem with discolored vascular bundles.
Bacterial wilt | Carnation
DISEASE: Bacterial wilt
HOST: Carnation (Dianthus caryophyllus)
PATHOGEN: Burkholderia caryophylli
PATHOGEN SYNONYM: Pseudomonas caryophylli
SOURCE: T. Saito, M. Goto
DISEASE: Bacterial wilt
HOST: Carnation
Systemic infection caused cracking and necrosis of the stem.
Bacterial wilt | Carnation
DISEASE: Bacterial wilt
HOST: Carnation (Dianthus caryophyllus)
PATHOGEN: Burkholderia caryophylli
PATHOGEN SYNONYM: Pseudomonas caryophylli
SOURCE: R. Raabe