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    Ecology and evolution of truffle fungi : the diversity of fungi associated with northern flying squirrels

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    Author
    Bruner, Benjamin Luke
    Keyword
    Truffles
    Mycorrhizal fungi
    Northern flying squirrel
    Animal-fungus relationships
    Plant-fungus relationships
    Prince of Wales Island
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/12797
    Abstract
    "This thesis explores the ecology of truffle fungi, a diverse assemblage of symbiotic mycorrhizal fungi that extend microscopic hyphae throughout forest floors, forming networks of foraging mycelium capable of transporting water, vitamins, minerals, and other nutrients to the roots of plants. Plant sugars are used for energy and as raw material for the creation of complex reproductive structures and vast water and nutrient gathering infrastructures essential to the survival of most plants. Truffle fungi are defined here by their ability to form mycorrhiza and produce truffles: hypogeous sporocarps that are excavated and consumed by animals ranging from squirrels to humans, resulting in the long-distance transport of spores. In Chapter 1, I compile and synthesize published information on the evolution and ecology of truffle fungi. In Chapter 2, I describe molecular techniques used to extract, amplify, and characterize fungal DNA from the scat of an endemic island population of northern flying squirrels, Glaucomys sabrinus griseifrons, which specialize in the consumption of truffles. Statistical analysis of RFLP data from clones of fungal DNA indicates much higher levels of fungal diversity in G. s. griseifrons scat than expected. I argue that the estimated numbers of fungi associated with G. s. griseifrons represent a baseline of diversity for fungi associated with mainland populations of Glaucomys sabrinus"--Leaf iii
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2009
    Table of Contents
    Introduction -- 1. Evolution and ecology of truffle fungi -- 2. The diversity of fungi associated with northern flying squirrels -- Conclusions.
    Date
    2009-05
    Type
    Thesis
    Collections
    Biological Sciences

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