Thuja standishii: Difference between revisions
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{{Short description|Species of conifer}} |
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{{Speciesbox |
{{Speciesbox |
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| image = Thuja standishii.jpg |
| image = Thuja standishii.jpg |
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| status = NT |
| status = NT |
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| status_system = IUCN3.1 |
| status_system = IUCN3.1 |
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| status_ref = <ref name=iucn>{{ |
| status_ref = <ref name="iucn status 19 November 2021">{{cite iucn |author=Carter, G. |author2=Farjon, A. |date=2013 |title=''Thuja standishii'' |volume=2013 |page=e.T42264A2968225 |doi=10.2305/IUCN.UK.2013-1.RLTS.T42264A2968225.en |access-date=19 November 2021}}</ref> |
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| genus = Thuja |
| genus = Thuja |
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| species = standishii |
| species = standishii |
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'''''Thuja standishii''''' ('''Japanese thuja'''; |
'''''Thuja standishii''''' ('''Japanese thuja'''; [[Japanese language|Japanese]]: {{Lang|ja-latn|nezuko}}, {{Lang|ja-latn|kurobe}}) is a species of [[thuja]], an [[evergreen]] [[conifer]]ous [[tree]] in the cypress family [[Cupressaceae]]. It is native to southern [[Japan]], where it occurs on the islands of [[Honshū]] and [[Shikoku]]. It is a medium-sized tree, reaching 20–35 m tall and with a trunk up to 1 m diameter. |
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The foliage forms in flat sprays with scale-like [[leaf|leaves]] 2–4 mm long, matte green above, and with narrow white [[stomata]]l bands below. The [[conifer cone|cones]] are oval, yellow-green ripening red-brown, 6–12 mm long and 4–5 mm broad (opening to 8 mm broad), with 6–10 overlapping scales. |
The foliage forms in flat sprays with scale-like [[leaf|leaves]] 2–4 mm long, matte green above, and with narrow white [[stomata]]l bands below. The [[conifer cone|cones]] are oval, yellow-green ripening red-brown, 6–12 mm long and 4–5 mm broad (opening to 8 mm broad), with 6–10 overlapping scales. |
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It is an important timber tree in Japan, grown in [[forestry]] [[plantation]]s for its durable, waterproof, attractively scented [[wood]]. |
It is an important timber tree in Japan, grown in [[forestry]] [[plantation]]s for its durable, waterproof, attractively scented [[wood]]. |
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There is some evidence that extracts of ''T. standishii'' have biological activity. It contains a compound called [[standishinal]] which has shown relatively potent effects on the enzyme [[aromatase]]. It acts as an |
There is some evidence that extracts of ''T. standishii'' have biological activity. It contains a compound called [[standishinal]] which has shown relatively potent effects on the enzyme [[aromatase]]. It acts as an inhibitor, thus decreasing the synthesis of [[estradiol]] in the human body. This compound has been used in research and derivatives of it have shown even stronger inhibition of aromatase. |
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It is one of the [[Five Sacred Trees of Kiso]]. |
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==References== |
==References== |
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{{More footnotes|article|date=October 2018}}{{Reflist}} |
{{More footnotes|article|date=October 2018}}{{Reflist}} |
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Latest revision as of 18:30, 25 January 2024
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Cupressales |
| Family: | Cupressaceae |
| Genus: | Thuja |
| Species: | T. standishii
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| Binomial name | |
| Thuja standishii | |
Thuja standishii (Japanese thuja; Japanese: nezuko, kurobe) is a species of thuja, an evergreen coniferous tree in the cypress family Cupressaceae. It is native to southern Japan, where it occurs on the islands of Honshū and Shikoku. It is a medium-sized tree, reaching 20–35 m tall and with a trunk up to 1 m diameter.
The foliage forms in flat sprays with scale-like leaves 2–4 mm long, matte green above, and with narrow white stomatal bands below. The cones are oval, yellow-green ripening red-brown, 6–12 mm long and 4–5 mm broad (opening to 8 mm broad), with 6–10 overlapping scales.
It is an important timber tree in Japan, grown in forestry plantations for its durable, waterproof, attractively scented wood.
There is some evidence that extracts of T. standishii have biological activity. It contains a compound called standishinal which has shown relatively potent effects on the enzyme aromatase. It acts as an inhibitor, thus decreasing the synthesis of estradiol in the human body. This compound has been used in research and derivatives of it have shown even stronger inhibition of aromatase. It is one of the Five Sacred Trees of Kiso.
References
[edit] | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (October 2018) |
- ^ Carter, G.; Farjon, A. (2013). "Thuja standishii". IUCN Red List of Threatened Species. 2013: e.T42264A2968225. doi:10.2305/IUCN.UK.2013-1.RLTS.T42264A2968225.en. Retrieved 19 November 2021.
Further reading
[edit]- Ohtsu, Hironori; Iwamoto, Manabu; Ohishi, Hirofumi; Matsunaga, Shunyo; Tanaka, Reiko (1999). "Standishinal, a novel carbon skeletal diterpene from the bark of Thuja standishii (Gord.) Carr". Tetrahedron Letters. 40 (35): 6419–6422. doi:10.1016/S0040-4039(99)01191-0.
- Katoh, Takahiro; Akagi, Taichi; Noguchi, Chie; Kajimoto, Tetsuya; Node, Manabu; Tanaka, Reiko; Nishizawa (Née Iwamoto), Manabu; Ohtsu, Hironori; Suzuki, Noriyuki; Saito, Koichi (2007). "Synthesis of dl-standishinal and its related compounds for the studies on structure–activity relationship of inhibitory activity against aromatase". Bioorganic & Medicinal Chemistry. 15 (7): 2736–2748. doi:10.1016/j.bmc.2007.01.031. PMID 17287126.