Foliar fungal diversity related to Myrtle rust (Austropuccinia psidii) antagonism and its implications for pathogen resistance in the endangered Hawaiian Nioi (Eugenia koolauensis)

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dc.contributor.advisor Amend, Anthony S.
dc.contributor.author Chock, Mason Kamalani
dc.contributor.department Botany
dc.date.accessioned 2019-07-02T17:48:16Z
dc.date.available 2019-07-02T17:48:16Z
dc.date.issued 2019
dc.description.degree M.S.
dc.identifier.uri http://hdl.handle.net/10125/63149
dc.subject Microbiology
dc.subject Ecology
dc.subject Plant pathology
dc.subject Biocontrol
dc.subject Conservation
dc.subject Culture-based
dc.subject Diversity
dc.subject Forestry
dc.subject Hyperparasitism
dc.title Foliar fungal diversity related to Myrtle rust (Austropuccinia psidii) antagonism and its implications for pathogen resistance in the endangered Hawaiian Nioi (Eugenia koolauensis)
dc.type Thesis
dcterms.abstract An introduced fungal rust pathogen, Austropuccinia psidii, is a primary component contributing to the decline of the critically endangered Hawaiian Eugenia tree (Eugenia koolauensis). Once common on the islands of Oʻahu and Molokaʻi, E. koolauensis is now limited to 11 populations with a total of ~99 mature individuals on the island of Oʻahu. Hundreds of asymptomatic fungal species live within the E. koolauensis leaf tissue, and recent studies imply the composition of these foliar fungal communities can affect the severity of pathogens such as A. psidii. Using molecular and culture-based methods, I characterized the foliar fungal community and introduced these diverse fungi in to microbiome of E. koolauensis leaves infected by A. psidii. By manipulating the composition of the leaf microbiome, via application of a leaf slurry and single isolate spore-slurries, I demonstrated how increased fungal diversity promotes resistance to A. psidii in E. koolauensis. These results highlight the potential of harnessing native microbes to induce disease resistance within a conservation context.
dcterms.description M.S. Thesis. University of Hawaiʻi at Mānoa 2019
dcterms.extent 58 pages
dcterms.language eng
dcterms.publisher University of Hawai'i at Manoa
dcterms.rights All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
dcterms.type Text
local.identifier.alturi http://dissertations.umi.com/hawii:10200
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