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.
|Qualification||Doctor of Philosophy|
|Award date||14 Aug 2020|
|Publication status||Unpublished - 2020|