Kauri dieback

Kauri dieback is a forest dieback disease of the native kauri trees (Agathis australis) of New Zealand that is suspected to be caused by the oomycete Phytophthora agathidicida. Symptoms can include root rot and associated rot in a collar around the base of the tree, bleeding resin, yellowing and chlorosis of the leaves followed by extensive defoliation, and finally, death.

Kauri dieback
A kauri tree with a bleeding trunk lesion
Scientific classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Stramenopiles
Phylum: Oomycota
Order: Peronosporales
Family: Peronosporaceae
Genus: Phytophthora
Species:
P. agathidicida
Binomial name
Phytophthora agathidicida
B.S. Weir, Beever, Pennycook & Bellgard
Synonyms
  • Phytophthora 'taxon Agathis'
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