RESULTS

(6)

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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 leaf blight and rot

HOST: Orchid

Orchid hybrid (Odontoglossum × Memoria Martin Orenstein 'Lulu') with large, brown, infected area on leaves with water-soaking at margin between healthy and diseased tissues.

Bacterial leaf blight and rot | Orchid

DISEASE: Bacterial leaf blight and rot

HOST: Orchid (Odontoglossum 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