Characterising the morphology, phylogeny, ecology and distribution of the arbuscular mycorrhizal fungi, fine root endophytes

Suzanne Orchard

Research output: ThesisDoctoral Thesis

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Abstract

Fine root endophytes (FRE; Glomus tenue) are root-endophytic fungi traditionally classified within the arbuscular mycorrhizal fungi (AMF; phylum Glomeromycota). However, their placement within Glomus, and their ecological function, was obscure. I grew Trifolium subterraneum roots enriched with FRE, extracted DNA for lllumina next-generation sequencing, and demonstrated that FRE phylogenetically align with Mucoromycotina-not Glomeromycota .Through a literature meta-analysis, cryo-scanning electron microscopy and a distribution survey I found evidence that FRE play a role in plant nutrient acquisition, but are likely influenced by different edaphic variables than AMF. Therefore, FRE differ from AMF in phylogenetic placement, physiology and ecological niche.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Thesis sponsors
Award date25 Oct 2017
DOIs
Publication statusUnpublished - 2017

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