What is the host range of <i>Phytophthora agathidicida</i> in New Zealand


  • J.M. Ryder
  • N.W. Waipara
  • B.R. Burns




Phytophthora agathidicida is a virulent oomycete plant pathogen which is currently known to only infect Agathis australis in New Zealand Phytophthora species rarely have a single plant host so other hosts for P agathidicida are likely but unknown Phytophthora species are also often cryptic and sometimes asymptomatic on their host plants making it a challenge to identify their true host range Once an exotic Phytophthora species is introduced to an area it becomes virtually impossible to eliminate A sound understanding of a Phytophthoras epidemiology is needed to prevent its spread onto uninfected hosts This study determined whether P agathidicida has a wider host range than currently recognised Plant community composition was compared between healthy and infected kauri forest to detect possible susceptible species and detached leaf assays were utilised as a further screen of possible hosts Results showed a significant difference in species abundances between sites infected with P agathidicida and sites without P agathidicida that was unrelated to other potential variables Leaf assays also indicated several other native plant species other than A australis as possible carriers or hosts including Knightia excelsa and Leucopogon fasciculatus Identifying the host range of P agathidicida is important for optimising the design of future control strategies for this pathogen




How to Cite

Ryder, J.M., N.W. Waipara, and B.R. Burns. “What Is the Host Range of &lt;i&gt;Phytophthora agathidicida&lt;/i&gt; In New Zealand”. New Zealand Plant Protection 69 (January 8, 2016): 320–320. Accessed November 29, 2023. https://journal.nzpps.org/index.php/nzpp/article/view/5925.



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