Australasian Plant Pathology (2015) 44, 191-203

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L.A. Sparrow, M. Rettke and S.R. Corkrey (2015)
Detection of Phytophthora multivora in the Wollemi Pine site and pathogenicity to Wollemia nobilis
Australasian Plant Pathology 44 (2), 191-203
Abstract: Phytophthora multivora, a recently described species recovered from declining natural ecosystems in Western Australia, was detected in the natural site of the rare and endangered Wollemi pine in New South Wales. The Phytophthora species was identified based on morphology and sequence analysis of the rDNA ITS and mitochondrial DNA cox1 regions. A pathogenicity trial to test the susceptibility of Wollemi pine to P. multivora resulted in symptoms equal in extent to those caused by P. cinnamomi, a known pathogen of Wollemi pine. Post-trial dry root weight analysis of P. multivora and P. cinnamomi inoculated plants revealed no significant difference between species, as both significantly reduced root mass compared to uninoculated plants. P. multivora was shown to be a pathogen of the Wollemi pine, and the implications on protecting this endangered species in the wild are discussed.
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Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Streptomyces scabiei Potato (Solanum tuberosum) Australia (South+SE)
Rhizoctonia solani Potato (Solanum tuberosum) Australia (South+SE)
Spongospora subterranea Potato (Solanum tuberosum) Australia (South+SE)