RESULTS

(8)

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DISEASE: Bacterial seed and seedling rot

HOST: Geranium

Cotyledons with water-soaked spots.

Bacterial seed and seedling rot | Geranium

DISEASE: Bacterial seed and seedling rot

HOST: Geranium (Pelargonium sp.)

PATHOGEN: Paenibacillus sp.

SOURCE: A. Magyarosy, D. Thomas

DISEASE: Bacterial seed and seedling rot

HOST: Geranium

Rotted and discolored seeds (right). Healthy seeds (left).

Bacterial seed and seedling rot | Geranium

DISEASE: Bacterial seed and seedling rot

HOST: Geranium (Pelargonium sp.)

PATHOGEN: Paenibacillus sp.

SOURCE: A. Magyarosy, D. Thomas

DISEASE: Olive knot

HOST: Olive

Multiple infections of young stems. The bacterium invades vascular tissues during certain times of the year and may be isolated from branches that appear healthy.

Olive knot | Olive

DISEASE: Olive knot

HOST: Olive (Olea europaea)

PATHOGEN: Pseudomonas savastanoi pv. savastanoi

SOURCE: M. Schroth

DISEASE: Olive knot

HOST: Olive

Tree with knots/galls on branches along with twig dieback, which is associated with knots. Fusarium and Diplodia spp. infect through knots and are thought to be main reason for dieback.

Olive knot | Olive

DISEASE: Olive knot

HOST: Olive (Olea europaea)

PATHOGEN: Pseudomonas savastanoi pv. savastanoi

SOURCE: M. Schroth

DISEASE: Olive knot

HOST: Olive

Multiple infections on olive branch. Knots at this stage begin to die from the outside in and are infected by several fungi.

Olive knot | Olive

DISEASE: Olive knot

HOST: Olive (Olea europaea)

PATHOGEN: Pseudomonas savastanoi pv. savastanoi

SOURCE: M. Schroth

DISEASE: Pseudomonas leaf spot

HOST: Marigold

Marigolds with yellow apical chlorosis attributed to toxin production by the pathogen.

Pseudomonas leaf spot | Marigold

DISEASE: Pseudomonas leaf spot

HOST: Marigold (Tagetes erecta)

PATHOGEN: Pseudomonas syringae pv. tagetis

SOURCE: R. Durbin

DISEASE: Pseudomonas leaf spot

HOST: Marigold

Chlorotic leaves with total loss of chlorophyll. Disease is also known as toxic chlorosis.

Pseudomonas leaf spot | Marigold

DISEASE: Pseudomonas leaf spot

HOST: Marigold (Tagetes erecta)

PATHOGEN: Pseudomonas syringae pv. tagetis

SOURCE: R. Durbin

DISEASE: Pseudomonas leaf spot

HOST: Marigold

Plants with bright yellow apical chlorosis.

Pseudomonas leaf spot | Marigold

DISEASE: Pseudomonas leaf spot

HOST: Marigold (Tagetes patula)

PATHOGEN: Pseudomonas syringae pv. tagetis

SOURCE: R. Durbin