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Permanent link (DOI): https://doi.org/10.7939/R3GT5FV7B

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The role of ectomycorrhizal fungi in induced defense chemistry of lodgepole pine Open Access

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Other title
Subject/Keyword
Induced defense chemistry
Ectomycorrhizal fungi
lodgepole pine (Pinus contorta var. latifolia)
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Kanekar,Sanat,Sandeep
Supervisor and department
Nadir Erbilgin
Examining committee member and department
Stephen Strelkov (Agricultural Food and Nutritional Science)
Jenusz Zwaizek (Department of Renewable Resources)
Department
Department of Renewable Resources
Specialization
Forest Biology and Management
Date accepted
2017-09-29T09:52:17Z
Graduation date
2017-11:Fall 2017
Degree
Master of Science
Degree level
Master's
Abstract
Ectomycorrhizal fungi are determinants of the success of pine regeneration in post-disturbance stands. These fungi promote resource acquisition and resistance in seedlings. They may alter plant chemistry in lodgepole pine (Pinus contorta var. latifolia), which may directly affect the success or failure of mountain pine beetle (Dendroctonus ponderosae) outbreaks in lodgepole pine stands of western Canada. It is unknown, whether the chemistry of pine seedlings differs on exposure to individual or a community of ectomycorrhizal fungi but could help to elucidate methods to promote healthy, post-disturbance regeneration. This project investigated such responses by examining induced monoterpene compounds as well as growth parameters of greenhouse-grown lodgepole pine seedlings whose roots were colonized by individual or a combination of ectomycorrhizal fungi. Ectomycorrhizal competition on artificial growth media was also assessed to support greenhouse findings. This research revealed that changes in ectomycorrhizal fungal species differently affect the induced chemistry of lodgepole pine depending on the fungal species, their interactions, and root colonization sequences. Considering the effects of these symbiotic fungi on plant growth and induced defenses, they can directly or indirectly affect the host tree susceptibility to their antagonistic biotic agents.
Language
English
DOI
doi:10.7939/R3GT5FV7B
Rights
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
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