Phytophthora ramorum - The Food and Environment Research ...

Drimys winteri (Winter’s bark)
Drimys winteri (Winter’s bark leaf necrosis)
Foliar infection is characterised by marginal or
leaf tip necrotic, often water soaked lesions.
These may extend throughout the leaf lamina.
Blackening of the petiole has also been
observed. To date, no evidence of die-back or
cankers have been seen on D. winteri in
association with infection by P. kernoviae.
Gevuina avellana (Chilean Hazelnut) leaf necrosis
Gevuina avellana (Chilean hazelnut) leaf necrosis
The foliar symptoms take the form of a leaf
blight, characterised by dramatic coppery, rusty
brown coloured leaf lesions. The lesions usually
begin along the leaf margin or tip and then
progress rapidly through tissues causing
widespread necrosis. Unlike other hosts, the leaf
blight on Gevuina is not characterised by lesion
advance in the midrib or lateral leaf veins and
there is no blackening of infected tissue. Instead
the diseased parts of leaves turn a reddish brown
colour. A few discrete lesions are sometimes
apparent on leaves delineated by dark brown
margins. Diseased areas of the leaf are sharply
contrasted against the bright green colour of the
healthy parts.
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