Douglas
Pseudotsuga menziesii · British Columbia Fir
Pseudotsuga menziesii, commonly known as Douglas-fir, is a coniferous tree native to North America. While it has significant ecological and commercial importance, no traditional medicinal uses have been documented for this species. Scientific evidence primarily focuses on its ecological interactions; one study indicated that machine-felling did not negatively impact soil more than hand-felling under certain conditions. Another study provided insights into the mycorrhizal relationships between Douglas-fir and other species, suggesting potential roles in forest health. Research also explored physiological responses to excision in angiosperms versus gymnosperms, finding differential effects on water potential, stomatal conductance, and photosynthesis. Notably, no major safety concerns or drug interactions have been recorded for Pseudotsuga menziesii.
- Meilleure preuve
- A
- Précautions
- —
Information uniquement. L'usage traditionnel ne signifie pas une efficacité prouvée. Les preuves et la sécurité varient — consultez les sources citées.
Ce que dit la science
- Cette étude a montré que la débroussailleuse à assistance par fil n'a pas eu un impact plus négatif sur le sol que la taille manuelle sur des pentes raides avec du sol ultisol au cours d'une période de deux ans.
- L'étude a mis en évidence des preuves soutenant un seul passage d'un mode épigée à hypogée dans la famille Morchellaceae et a fourni des preuves directes de la symbiose ectomycorhizale entre les espèces Leucangium et Pseudotsuga menziesii.
- Cell suspension cultures of Douglas-fir nucellus produced secretory proteins similar to those found in pollination drops, suggesting a tractable system for studying nucellar proteins.
- L'excision a généralement augmenté le potentiel d'eau des branches mais réduit l'échange gazeux des feuilles dans la plupart des espèces, bien que les effets variaient en fonction du type de plante et de ses caractéristiques.
Frequently asked questions
What is Douglas?
Douglas (Pseudotsuga menziesii) is a plant documented in FolkKB's traditional-medicine reference, drawn from sourced literature and cross-checked against the evidence.
What does the scientific evidence say about Douglas?
4 sourced findings are recorded for Douglas; the strongest carries evidence grade A. For example: Cette étude a montré que la débroussailleuse à assistance par fil n'a pas eu un impact plus négatif sur le sol que la taille manuelle sur des pentes raides avec du sol ultisol au cours d'une période de deux ans.
How strong is the evidence for Douglas?
The strongest finding for Douglas carries evidence grade A — strong evidence. Grades run A (strongest) to D (preliminary or traditional).
Is Douglas safe? What are the side effects?
No major safety issues are recorded for Douglas in our sources, but the data may be incomplete. Consult a qualified professional before use.
Does Douglas interact with medications?
No drug interactions are recorded for Douglas in our sources. This does not rule them out — check with a pharmacist.
What are the common names of Douglas?
Douglas is also known as: British Columbia Fir, Псевдотсуга Мензиса.
Is Douglas a proven treatment?
No. FolkKB is informational only. Traditional use and early findings are not proof of efficacy or safety — consult a qualified professional and never self-treat.
Sources
- T2 Phylogenomics, trophic ecology, and systematics of the truffle-forming Morchellaceae. literature abstract metadata
- T2 Excision increases branch water potential but generally reduces leaf gas exchange. literature abstract metadata
- T2 Creation of a Pseudotsuga menziesii nucellus cell suspension culture system to produce proteins involved in reproduction. literature abstract metadata
- T2 Impacts of Tethered Logging Equipment on Soil Compaction, Moisture and Seedling Growth. literature abstract metadata