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

Mohitul Hossain

doi:10.26182/5f72dc53fa0dd

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

Mohitul Hossain

School of Biological Sciences

Research output: Thesis › Doctoral Thesis

796 Downloads (Pure)

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 language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Poot, Pieter, Supervisor Veneklaas, Erik, Supervisor
Award date	14 Aug 2020
DOIs	https://doi.org/10.26182/5f72dc53fa0dd
Publication status	Unpublished - 2020

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10.26182/5f72dc53fa0dd

THESIS - DOCTOR OF PHILOSOPHY - HOSSAIN Md. Mohitul - 2020
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1 Doctoral Thesis

The dendroclimatological potential of karri: (Eucalyptus diversicolor F. Muell)
Oliver, J., 2022, (Unpublished) 191 p.
Research output: Thesis › Doctoral Thesis

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114 Downloads (Pure)

Cite this

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

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.",

keywords = "Eucalypt, canker disease, drought stress, host provenances, xylem-phloem interaction, whole-plant conductance, carbon dynamics, tree mortality",

author = "Mohitul Hossain",

year = "2020",

doi = "10.26182/5f72dc53fa0dd",

language = "English",

school = "The University of Western Australia",

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T1 - Marri (Corymbia calophylla) tree mortality in Western Australia: Interactive effects of drought and a canker pathogen (Quambalaria coyrecup)

AU - Hossain, Mohitul

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - Eucalypt

KW - canker disease

KW - drought stress

KW - host provenances

KW - xylem-phloem interaction

KW - whole-plant conductance

KW - carbon dynamics

KW - tree mortality

U2 - 10.26182/5f72dc53fa0dd

DO - 10.26182/5f72dc53fa0dd

M3 - Doctoral Thesis

ER -

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

Abstract

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Research output

The dendroclimatological potential of karri: (Eucalyptus diversicolor F. Muell)

Cite this