RA3 THESIS: Effect of kauri dieback on kauri ...

Effects of the soil-borne pathogen Phytophthora agathidicida on the kauri (Agathis australis) phyllosphere

July 2023

Hamilton Murray M. 2023. Effects of the soil-borne pathogen Phytophthora agathidicida on the kauri (Agathis australis) phyllosphere. Unpublished Masterate thesis, University of Auckland.

ABSTRACT

Kauri tree damage by Phytophthora agathidicida (PA) colonisation of the roots and vascular tissue, consequently restricts water and nutrient transport through the tree. Resulting infection symptoms in the canopy, including foliage discolouration and thinning, suggest biochemical changes are occurring within the leaves. This research aims to understand how PA infection impacts the nutrient status of kauri leaves.