Mycorrhizal assessment of vascular plants from subantarctic Macquarie Island

Roots of 40 taxa of vascular plants from subantarctic Macquarie Island were examined to determine their mycorrhizal status. Samples comprised 36 flowering plant taxa (Spermatophyta) from 16 families, and 4 nonflowering plant taxa (Pteridophyta) from 4 families. No arbutoid, ericoid, or ectomycorrhiz...

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Bibliographic Details
Published in:Arctic and alpine research 1997-11, Vol.29 (4), p.483-491
Main Authors: Laursen, G.A. (University of Alaska Fairbanks, Fairbanks, AK.), Treu, R, Seppelt, R.D, Stephenson, S.L
Format: Article
Language:English
Subjects:
Antarctic regions
Ecosystems
Forest soils
Fungi
MYCORHIZE
MYCORRHIZAE
Mycorrhizas
OCEANIA
OCEANIE
Plant roots
PLANTAS
PLANTE
PLANTS
Species
Vascular plants
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Summary:Roots of 40 taxa of vascular plants from subantarctic Macquarie Island were examined to determine their mycorrhizal status. Samples comprised 36 flowering plant taxa (Spermatophyta) from 16 families, and 4 nonflowering plant taxa (Pteridophyta) from 4 families. No arbutoid, ericoid, or ectomycorrhizae were observed, nor did we collect the fruiting bodies of any fungi whose presence would indicate or suggest the presence of ectomycorrhizal associations. Fifteen of the plants examined showed vesicles, but vesicles and arbuscles were observed in only three plants: Hydrocotyle novae-zeelandiae (Apiaceae), Pleurophyllum hookeri (Asteraceae), and Acaena magellanica (Rosaceae). Dark septate fungi were observed in the roots of 21 plant species. The one species of orchid found on the island, Corybas dienemus, showed typical orchid mycorrhizae.
ISSN:0004-0851
2325-5153
DOI:10.2307/1551996