Plasmodiophora brassicae. It is not a fungus; it is in a separate kindom called Protista, and is in a group known as rhizaria. There are many club root strains.
AUTHOR Grahame Jackson
Information from Diseases of vegetable crops in Australia (2010). Editors, Denis Persley, Tony Cooke, Susan House. CSIRO Publishing; and from CABI (2016) Plasmodiophora brassicae (cabbage club root). Crop Protection Compendium. (www.cabi.org/cpc). Photos 1&3 Gerald Holmes, California Poltechnic State University at San Luis Obispo, Bugwood.org.
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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