Go to  Advanced Search

Mycorrhizal inoculation, endophytic colonization, and allelopathic potential of Wollemi Pine (Wollemia nobilis) roots

Show simple item record

dc.contributor.author Biggs, Laura Ellen
dc.date.accessioned 2009-09-25T16:50:03Z
dc.date.available 2009-09-25T16:50:03Z
dc.date.copyright 2009 en
dc.date.issued 2009-09-25T16:50:03Z
dc.identifier.uri http://hdl.handle.net/2429/13152
dc.description.abstract Mycorrhizas are ubiquitous symbiotic relationships between soil-inhabiting fungi and the roots of over 90 % of terrestrial plants. Mycorrhizal colonization of Wollemia nobilis Jones, Hill & Allen (Wollemi Pine), a newly discovered and extremely rare conifer native to southeastern Australia, is a largely unexplored subject. The objectives of this work were: (1) to assess mycorrhizal colonization of Wollemi Pines following fungal inoculation, (2) to identify endophytic fungi associated with Wollemi Pine roots growing in the field and in horticultural substrates, and (3) to evaluate the allelopathic activity of Wollemi Pines. In both laboratory and field environments, juvenile trees were inoculated with several different arbuscular mycorrhizal fungi and one fungus known to form ectendomycorrhizas on members of the Pinaceae. Mycorrhizal colonization was not evident in any of the inoculated plants; however, endophytic fungal structures formed by Cylindrocarpon pauciseptatum and Phialocephala fortinii were consistently present in the roots of plants grown in the field or in growth chambers. Preliminary evidence of allelopathic chemical production by Wollemi Pines was also found. Extracts of soil used to grow Wollemi Pines suppressed germination of leek seeds but not sorghum seeds. This thesis presents the results from the first mycorrhizal fungal inoculation of Wollemi Pine, the first identification of fungal endophytes colonizing Wollemi Pine roots, and the first evidence for the production of allelopathic chemicals by Wollemi Pine. en
dc.format.extent 1919938 bytes
dc.format.mimetype application/pdf
dc.language.iso eng en
dc.publisher University of British Columbia
dc.title Mycorrhizal inoculation, endophytic colonization, and allelopathic potential of Wollemi Pine (Wollemia nobilis) roots en
dc.type Electronic Thesis or Dissertation
dc.degree.name Master of Science - MSc en
dc.degree.discipline Biology en
dc.degree.grantor University of British Columbia
dc.date.graduation 2009-11 en
dc.degree.campus UBCO en


Files in this item

Files Size Format Description   View
ubc_2009_fall_biggs_laura.pdf 1.919Mb Adobe Portable Document Format   View/Open
 

This item appears in the following Collection(s)

Show simple item record

All items in cIRcle are protected by copyright, with all rights reserved.

UBC Library
1961 East Mall
Vancouver, B.C.
Canada V6T 1Z1
Tel: 604-822-6375
Fax: 604-822-3893