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: Ginger
Blackening of pith and cortex of rhizome.
Bacterial wilt | Ginger
DISEASE: Bacterial wilt
HOST: Ginger (Zingiber officinale)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: A. Alvarez
DISEASE: Bacterial wilt
HOST: Ginger
Field of wilted ginger plants.
Bacterial wilt | Ginger
DISEASE: Bacterial wilt
HOST: Ginger (Zingiber officinale)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: A. Hayward
DISEASE: Bacterial wilt
HOST: Ginger
Ginger plants with yellowing, marginal necrosis, and downward curling of infected leaves, in contrast to darker, fully expanded healthy leaves.
Bacterial wilt | Ginger
DISEASE: Bacterial wilt
HOST: Ginger (Zingiber officinale)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: M. Paret, N. Joy
DISEASE: Bacterial wilt
HOST: Ginger
Cupping and leaf necrosis precedes wilt and death of plants.
Bacterial wilt | Ginger
DISEASE: Bacterial wilt
HOST: Ginger (Zingiber officinale)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: M. Paret, N. Joy
DISEASE: Bacterial wilt
HOST: Ginger
Typical symptoms of bacterial wilt in ginger plantations, Kerala, India.
Bacterial wilt | Ginger
DISEASE: Bacterial wilt
HOST: Ginger (Zingiber officinale)
PATHOGEN: Ralstonia solanacearum
PATHOGEN SYNONYM: Pseudomonas solanacearum
SOURCE: M. Paret, N. Joy