Abstract
In northern ecosystems such as the subarctic tundra, mining activities increase stress to a point where actions are needed to promote site reclamation. Ecological restoration of these mining-impacted sites with beneficial microorganisms, such as mycorrhizal fungi, is considered necessary and useful for the growth and survival of their host plants, but also for their tolerance to poor and contaminated environments, such as mine tailings. Here, we are interested in root symbionts associated with plants from the Schefferville mining site in northern Quebec. Very few studies of root fungal communities have been conducted in such a northern environment. The spatial and host plant variation of root fungal isolates was investigated. A total of 456 culturable fungi were isolated, of which 376 were successfully identified and assigned to 106 taxa based on rDNA internal transcribed spacer analysis using ITSF-1 and ITS-4 primers. The most commonly isolated fungi belonged to three genetically related groups: the Rhizoscyphus ericae aggregate, the dark septate endophytes, and Umbelopsis rammaniana and Mortierella sp., which are known to be genetically very close and often misclassified as one another. These groups were present on both disturbed and natural sites, but it appears that plants from disturbed sites had a greater affinity for dark septate endophytes. This study is the first step in the development of a restoration plan for the Schefferville mining site, and the baseline data obtained open new avenues for future studies, including the use of indigenous mycorrhizal-based biofertilizers to implement ecological revegetation strategies.
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Claims 5
Claim · model-written summary
The study isolated 456 culturable fungi from plant roots.
- Taxon
- plantsViridiplantaee1
- Outcome
- culturable fungi were isolatede0
- Value
- 456e0
Verbatim
e0“A total of 456 culturable fungi were isolated”
t0“root fungal isolates from disturbed and undisturbed Arctic and alpine tundra habitats in Northern Quebec, Canada”
e1“plants from disturbed sites had a greater affinity for dark septate endophytes”
Claim · model-written summary
Of the fungal isolates, 376 were identified and assigned to 106 taxa.
- Taxon
- plantsViridiplantaee1
- Outcome
- successfully identifiede0
- Value
- 376e0
- Qualifier
- 106 taxae0
Verbatim
e0“376 were successfully identified and assigned to 106 taxa”
t0“root fungal isolates from disturbed and undisturbed Arctic and alpine tundra habitats in Northern Quebec, Canada”
e1“plants from disturbed sites had a greater affinity for dark septate endophytes”
Claim · model-written summary
Commonly isolated groups included the Rhizoscyphus ericae aggregate, dark septate endophytes, Umbelopsis rammaniana and Mortierella sp.
- Taxon
- plantsViridiplantaee1
- Interactor
- Rhizoscyphus ericae aggregate
Hyaloscypha cf. hepaticicolae0symbiont - Outcome
- most commonly isolated fungie0
- Qualifier
- the dark septate endophytes, and Umbelopsis rammaniana and Mortierella sp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most commonly isolated fungi belonged to three genetically related groups: the Rhizoscyphus ericae aggregate, the dark septate endophytes, and Umbelopsis rammaniana and Mortierella sp.”
t0“root fungal isolates from disturbed and undisturbed Arctic and alpine tundra habitats in Northern Quebec, Canada”
e1“plants from disturbed sites had a greater affinity for dark septate endophytes”
Claim · model-written summary
These fungal groups occurred at both disturbed and natural sites.
- Taxon
- plantsViridiplantaee1
- Outcome
- present on both disturbed and natural sitese0
- Setting
- disturbed and natural sitese0
Verbatim
e0“These groups were present on both disturbed and natural sites”
t0“root fungal isolates from disturbed and undisturbed Arctic and alpine tundra habitats in Northern Quebec, Canada”
e1“plants from disturbed sites had a greater affinity for dark septate endophytes”
Claim · model-written summary
Plants from disturbed sites appeared to have greater affinity for dark septate endophytes.
Verbatim
e0“plants from disturbed sites had a greater affinity for dark septate endophytes”