Phytophthora kernoviae
Phytophthora kernoviae Brasier, Beales & Kirk

Identification, Biology, Control and Management Resources

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Asexual Spore; Mycol.Res 109, 853-859; Figs 18-22. Regular, ovoid limoniform sporangia. Figs 23-26. Asymmetrical or ‘mouse-shaped’ sporangia. Bar=10 mm.
Susan Kirk, Forest Research, Bugwood.org
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Culture; From Mycol.Res 109, 853-859; Colony types of Phytophthora kernoviae. Figs 1-4. After10 d at 20 xC on CA in complete darkness. Figs 5-6. After 10 d at 20 x on CA with some exposure to light at 7 d for colony measurement. Figs 7-8. After 10 d on CA at ambient room temperature (y23 x) in diurnal light. (Figs 1, 5, isolate P1560; Figs 2, 6-7, isolate P1554; Fig. 3, P1601; Fig. 4, isolate P1608; Fig. 8, isolate P1600).
George Gate, Forest Research, Bugwood.org
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Sexual Spore; Mycol.Res 109, 853-859; Representative oogonia, antheridia and thick walled plerotic oospores of Phytophthora kernoviae. Compare oogonia with tapered bases (Figs 10-14, 16) with those without this feature (Figs 9, 15, 17). Bar=10 mm.
Susan Kirk, Forest Research, Bugwood.org
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Asexual Spore; Single sporangium (foreground) releasing zoospore
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Culture; Organism grown on P5ARP[H] medium (Jeffers SN and Martin SB (1986) Comparison of two media selective for Phytophthora and Pythium sp. Plant disease 70, 1038-1043). Note earlier spelling of organism prior to publication of official name.
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Feature(s); P. kernoviae sporangium.
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Feature(s); Scanning electron micrograph, P.kernoviae sporangia
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Symptoms; necrosis of rhododendron leaves
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Symptoms; necrotic lesion on stem
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Symptoms; necrotic lesion on foliage
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Symptoms;
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Symptoms; bleeding lesion on trunk
Central Science Laboratory Archive, Crown Copyright, Bugwood.org
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Symptoms; external lesion; 14 November 2003
Forest Research, United Kingdom Forestry Commission, Bugwood.org
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Symptoms; lesion on trunk
Forest Research, United Kingdom Forestry Commission, Bugwood.org
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Symptoms; bleeding lesion on trunk
Forest Research, United Kingdom Forestry Commission, Bugwood.org
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Symptoms; lesions of foliage of magnolia
Forest Research, United Kingdom Forestry Commission, Bugwood.org
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Symptoms; wilting of infected rhododendron
Forest Research, United Kingdom Forestry Commission, Bugwood.org
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Symptoms; wilting
Forest Research, United Kingdom Forestry Commission, Bugwood.org
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