Marri (Corymbia calophylla) tree mortality in Western Australia: Interactive effects of drought and a canker pathogen (Quambalaria coyrecup)

Mohitul Hossain

Research output: ThesisDoctoral Thesis

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Abstract

Tree mortality in eucalypt-dominated forest ecosystems in Australia is thought to be associated with climatic extremes and shifts in pest and pathogen dynamics. Marri (Corymbia calophylla) decline in Western Australia is primarily caused by canker disease (Quambalaria coyrecup). This project shows that drought stress influences host-pathogen interactions, with different susceptibility among host provenances. Pathogen-induced dysfunctionality of phloem and xylem aggravates the negative impact of drought induced-xylem embolism under simultaneous disease and drought stress, leading to the death of branches, and eventually, in extreme cases, to the death of the whole tree.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Poot, Pieter, Supervisor
  • Veneklaas, Erik, Supervisor
Award date14 Aug 2020
DOIs
Publication statusUnpublished - 2020

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