Fungal endorhizal associates of Equisetum species from Western and Arctic Canada |
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Authors: | Emily Hodson Fakhra Shahid James Basinger Susan Kaminskyj |
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Institution: | (1) Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK S7N 5E2, Canada;(2) Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, SK S7N 5E2, Canada |
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Abstract: | We describe endorhizal fungi associated with Equisetum species collected from Ellesmere Island (82°N), Axel Heiberg Island (80°N), and from sites in Yukon Territory and the Prairie
Provinces (51–67°N). Fungal colonization was assessed using a multiple quantitation microintersect method for lactofuchsin-stained
roots examined with wide-field and confocal epifluorescence microscopy. Equisetum roots host abundant and diverse endorhizal fungal associates. For 85 specimens from 14 sites, total colonization averaged
30 ± 3%, range 0–97%. Colonization rates for wide aseptate hyphae characteristic of arbuscular mycorrhizae (5 ± 1%) was significantly
less than for fine endophytes (20 ± 3%) or septate endophytes (17 ± 2%). Equisetum spp. are abundant in tundra and an important understory plant in boreal forests, where they are particularly common on burned
or disturbed sites. Endorhizal fungi associated with Equisetum may have broad ecological relevance. |
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Keywords: | Mycorrhiza Endophyte Fungus Septate endophyte Fine endophyte Multiple quantitation microintersect method Tundra |
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