Photo 2. Bele wilt, Phytophthora nicotianae, showing the death of the young shoot at the top of the plant.
Photo 3. Highly magnified photo of zoospores of Phytophthora nicotianae, showing the whip-like hairs used for movement (each zoospore has two).
Photo 4. Root rot caused by Phytophthora nicotianae. Note the lack of roots, and that the lower stem has lost its bark, exposing the wood.
Bele Phytophthora wilt
Phytophthora nicotianae; previously, Phytophthora nicotianae pv. parasitica.
AUTHOR Grahame Jackson
Photos 1&3 Mike Furlong, University of Queensland. Photo 2 AR Hardham, Plant Cell Biology Group, Research School of Biology, The Australian National University, Canberra, Australia. Photos 4&5 Pita Tikai, ACIAR ICM/IPM project, Solomon Islands.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.
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