Chamaecyparis
Cupressaceae
Studies on constituents from Chamaecyparis pisifera and antibacterial activity of diterpenes. (1/20)
In the course of our research for biologically active constituents from coniferous plants, a chromone derivative (1) and an abietane derivative (2) were isolated along with several diterpenes from Chamaecyparis pisifera. Structures of the new compounds were determined to be 5,7-dihydroxy-2-(1-acetyl-2-methoxycarbonylethyl)-chromone and rel-(8R,10R,20S)-8,10,20-trihydroxy-9(10-->20)-abeo-abieta-9,13-dien-12-one by means of spectral methods including two-dimensional NMR experiments. Some of these abietane-type compounds isolated from this plants showed antibacterial activitv against the gram-positive bacteria Staphylococcus aureus and Bacillus subtilis. (+info)Changes in ABA turnover and sensitivity that accompany dormancy termination of yellow-cedar (Chamaecyparis nootkatensis) seeds. (2/20)
Yellow-cedar (Chamaecyparis nootkatensis [D. Don] Spach) seeds exhibit prolonged coat-imposed dormancy following their dispersal from the parent plant. Analyses were undertaken using S-(+)-[(3)H] abscisic acid (ABA) to monitor the capacity of embryos to metabolize ABA following their isolation from seeds subjected to various dormancy-breaking and control treatments. Radiolabelled phaseic acid (PA) and dihydrophaseic acid (DPA) were detected in embryos and, to a greater extent in the surrounding media, by 48 h regardless of whether the embryos had been excised from seed previously subjected to only a 3 d soak or to a full dormancy-breaking treatment. Of the two enantiomers of ABA, only the natural S-(+)-ABA effectively inhibited germination of isolated embryos. A metabolism-resistant synthetic ABA analogue S-[8',8',8',9',9',9']-hexadeuteroabscisic acid, S-(+)-d6-ABA, consistently slowed the germination rate of excised embryos to a greater extent than that caused by natural S-(+)-ABA. The deuterium-labelled ring methyl groups of the analogue made it more resistant to oxidation by yellow-cedar embryos and thus rendered the analogue more persistent and possessing greater activity. With increasing time of exposure to moist chilling, yellow-cedar embryos became increasingly insensitive to both ABA and to the analogue. Subjecting seed to chemical treatments (GA(3) in combination with 1-propanol) prior to moist chilling strongly enhanced the germinability of whole seeds. This treatment also had a relatively greater impact on ABA metabolism than did moist chilling alone, as indicated by a greater capacity of S-(+)-d6-ABA to inhibit the germination of embryos as compared to S-(+)-ABA. Moist chilling was most critical for reduced ABA sensitivity of embryos. A change in the embryo's ability to metabolize ABA and reduced embryo sensitivity to ABA are two factors associated with dormancy termination of whole seeds of yellow cedar; a change in only one of these factors is insufficient to elicit high germinability. (+info)Linking deer browsing and terpene production among genetic identities in Chamaecyparis nootkatensis and Thuja plicata (Cupressaceae). (3/20)
To investigate whether differential herbivore browsing reflects genetic variation in plant defense expression, variation in needle terpenes and damage caused by black-tailed deer (Odocoileus hemionus) was analyzed on yellow-cedar (Chamaecyparis nootkatensis) and western redcedar (Thuja plicata). In a 100-genet yellow-cedar population, three genets that were heavily browsed and had extremely low levels of monoterpenes (0-0.36% dry matter), sesquiterpenes, and diterpenes were compared to unbrowsed genets (0.85-3.83% monoterpenes in dry matter). These differences were maintained in individuals protected from browsing, suggesting genetically based variation in constitutive terpene production. In western redcedar, heavily browsed trees had significantly lower total monoterpene concentrations (1.69% dry matter) than lightly browsed trees (3.32% dry matter). One heavily browsed tree expressed no monoterpenes. No differences were found for diterpenes. In both species, the genotypes with extremely low monoterpene concentrations came from the same open-pollinated families. (+info)Novel diterpenes from the heartwood of Chamaecyparis obtusa var. formosana. (4/20)
Two novel diterpenes, obtusanal B (1) and obtusadione (2), along with obtusanal A (3), obtunone (4), 12-hydroxy-6,7-secoabieta-8,11,13-triene-6,7-dial, 8,12-dihydroxydielmentha-5,9-diene-7,11-dione and myrcene, isolated from the heartwood of Chamaecyparis obtusa var. formosana, were characterized by spectroscopic means, including 2D-NMR techniques. Compounds 1 and 2 are 7(6-->2)abeoabietane and 14(8-->9)abeoabietane type diterpenes, respectively. Their biosyntheses were proposed. (+info)Genetic diversity and the genetic structure of natural populations of Chamaecyparis obtusa: implications for management and conservation. (5/20)
We investigated 25 natural populations of Chamaecyparis obtusa using 51 cleaved amplified polymorphic sequence (CAPS) markers, which were developed using information on sequence-tagged sites (STS) in Cryptomeria japonica. Most CAPS markers have codominant expression patterns, and are suitable for population studies because of their robustness and convenience. We estimated various genetic diversity parameters, including average heterozygosity (H(e)) and allelic richness and found that the more peripheral populations tended to have lower genetic diversity than central populations, in agreement with a previous theoretical study. The overall genetic differentiation between populations was low, but statistically significant (G(ST)=0.039), and similar to the level reported in a previous allozyme study. We attempted to detect non-neutral loci associated with local adaptation to clarify the relationship between the fixation index (F(ST)) and H(e) values for each locus and found seven candidates non-neutral loci. Phylogenetic tree analysis of the populations and Bayesian clustering analysis revealed a pattern of gradually increasing isolation of populations with increasing geographical distance. Three populations had a high degree of linkage disequilibrium, which we attribute to severe bottlenecks due to human disturbance or competition with other species during their migration from refugia after the most recent glaciation. We concluded that the small populations in western Japan and in Kanto district are more important, from a conservation perspective, than the populations in central Japan, due to their genetic divergence, relatively small sizes and restricted areas. (+info)Neurite outgrowth-promoting active constituents of the Japanese cypress (Chamaecyparis obtusa). (6/20)
In the screening of biologically active constituents from woody plants, the methanol extract of leaves of Chamaecyparis obtusa showed potent neurite outgrowth-promoting activity in neuronal PC12 cells. The ethyl acetate-soluble fraction of the methanol extract showed potent activity and was separated by means of various chromatographic methods to give the two new compounds 1 and 2, as well as 11 known lignan and sesquiterpene derivatives. The structures of the new compounds were determined to be 9-O-acetyldihydrosesamin (1) and 9-O-(11-hydroxyeudesman-4-yl)dihydrosesamin (2), respectively, in NMR studies including 2D-NMR experiments. Of the 13 compounds, the known compound hinokinin (5) and the new compound 2 showed potent neurite outgrowth-promoting activity in PC 12 cells. (+info)Chitin synthase 2 inhibitory activity of O-methyl pisiferic acid and 8,20-dihydroxy-9(11),13-abietadien-12-one, isolated from Chamaecyparis pisifera. (7/20)
In the course of search for potent chitin synthase inhibitors from plant extracts, the chitin synthase 2 inhibitors, O-methyl pisiferic acid and 8,20-dihydroxy-9(11),13-abietadien-12-one which have diterpene skeleton, were isolated from the leaves of Chamaecyparis pisifera. These compounds inhibited chitin synthase 2 of Saccharomyces cerevisiae with the IC50 values of 5.8 and 226.4 microM, respectively. Especially, O-methyl pisiferic acid showed 15.3-fold stronger inhibitory activity than polyoxin D (IC50=88.6 microM), a well-known chitin synthase inhibitor. These compounds exhibited weaker inhibitory activities against chitin synthase 1 than chitin synthase 2, whereas it showed no inhibitory activity for chitin synthase 3. The compound exhibited mixed competitive inhibition with respect to UDP-N-acetyl-D-glucosamine as substrate (Ki=5 microM). These results indicated that O-methyl pisiferic acid is a specific inhibitor of chitin synthase 2. The compound also inhibited chitin synthase 1 of Candida albicans, which represents analogues to chitin synthase 2 of S. cerevisiae, with an IC50 of 75.6 microM, which represents 1.8-fold weaker activity than that of polyoxin D. Although O-methyl pisiferic acid has been reported for antibacterial and insecticidal activities, the present study is the first report on its inhibitory activity against chitin synthase 2. (+info)Characterization of pollen dispersion in the neighborhood of Tokyo, Japan in the spring of 2005 and 2006. (8/20)
The behavior of Japanese cedar (Cryptomeria japonica) and Japanese cypress (Chamaecyparis obtusa) pollens in an urban area was examined through the measurements of the dispersion characteristics at the various sampling locations in both outdoor and indoor environments. Airborne pollens were counted continuously for three months during the Japanese cedar pollen and Japanese cypress seasons in 2005 and 2006 by the use of Durham's pollen trap method in and around Tokyo, Japan. The dispersion of pollens at the rooftop of Kyoritsu Women's University was observed to be at extremely high levels in 2005 compared with previously reported results during the past two decades. As for Japanese cedar pollen, the maximum level was observed as 440 counts cm(-2) day(-1) on 18 March 2005. Japanese cypress pollen dispersed in that area in the latter period was compared with the Japanese cedar pollen dispersions. The maximum dispersion level was observed to be 351 counts cm(-2) day(-1) on 7 April 2005. Total accumulated dispersions of Japanese cedar and Japanese cypress pollens were 5,552 and 1,552 counts cm(-2) for the three months (Feb., Mar. and Apr.) in 2005, respectively. However, the dispersion of both pollens in 2006 was very low. The total accumulated dispersions of Japanese cedar and Japanese cypress pollens were 421 and 98 counts cm(-2) for three months (Feb., Mar. and Apr.) in 2006, respectively. Moreover, the pollen deposition on a walking person in an urban area showed that the pollen counts on feet were observed to be extremely high compared with the ones on the shoulder, back and legs. These findings suggested that pollen fell on the surface of the paved road at first, rebounded to the ambient air and was deposited on the residents again. Furthermore, the regional distribution of the total pollen dispersion in the South Kanto area was characterized on 15-16 March 2005 and on 14-15 March 2006. Although the pollen levels in 2005 were much higher than in 2006, it was commonly observed that higher pollen counts existed in the outlying areas. That is, the pollen counts in an urban area were confirmed to be at a lower level. As for the indoor dispersion of pollens, two cases were evaluated. At the lobby of the main building of Kyoritsu Women's University, the averaged ratio of the indoor to the outdoor pollen count is 4.1%. Another case was at the hospital building of a medical school. The pollen dispersion in the indoor environment was also observed to be low. It was concluded that the indoor pollen would be mainly carried from the outer environment by the movement of air. (+info)Chamaecyparis is a genus of evergreen coniferous trees in the family Cupressaceae. It includes several species commonly known as cypress or false cypress, which are native to eastern Asia and North America. These trees are characterized by their flattened sprays of scale-like leaves, small cones, and distinctive bark patterns. They are often grown as ornamental plants due to their attractive appearance and ability to thrive in a variety of climates.
There is no specific medical definition associated with Chamaecyparis, as it is not a term used in medicine. However, some compounds derived from these trees have been studied for their potential medicinal properties. For example, certain essential oils extracted from Chamaecyparis species have been found to have antimicrobial and insecticidal effects, although more research is needed to determine their safety and efficacy as treatments for human diseases.
Cupressaceae is a family of coniferous plants, also known as the cypress family. It includes a variety of genera such as *Cupressus* (cypress), *Juniperus* (juniper), *Thuja* (arborvitae or cedar), and *Chamaecyparis* (false cypress or Port Orford cedar). These plants are characterized by their small, scale-like leaves, and many produce cones that contain seeds. Some species in this family have economic importance as timber, ornamental plants, or for their essential oils.
"Thuja" is a botanical term for a genus of evergreen trees and shrubs, also known as arborvitae or western red cedar. It belongs to the family Cupressaceae. While it has some traditional medicinal uses, there isn't a widely accepted medical definition for "Thuja" in modern medicine.
Historically, preparations made from Thuja occidentalis (eastern white cedar) have been used in alternative and traditional medicine, such as homeopathy. The leaves and twigs are often used to make teas, tinctures, or essential oils. However, it's important to note that the use of Thuja for medicinal purposes can have potential side effects and toxicities, and its effectiveness is not always supported by scientific evidence. Always consult with a healthcare provider before starting any new treatment.
Tropolone is not a medical term, but a chemical compound. It is an organic compound with the formula C7H6O2 and is a colorless solid that is slightly soluble in water. Tropolone has a seven-membered ring containing six carbon atoms and one oxygen atom, which is aromatic.
Tropolone and its derivatives have been studied for their potential medicinal properties, including anti-inflammatory, antimicrobial, and anticancer activities. However, there are no tropolone-based drugs currently approved for medical use in humans.
Chamaecyparis
Chamaecyparis lawsoniana
Chamaecyparis taiwanensis
Chamaecyparis formosensis
Chamaecyparis eureka
Chamaecyparis thyoides
Chamaecyparis obtusa
Chamaecyparis pisifera
Torreya grandis
Cypress
List of Canadian forest-inventory conifers
Fokienia
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Cook Park, Orange
List of near threatened plants
List of least concern plants
Biflavonoid
Cedrus
Wojsławice Arboretum
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Charles Maries
Driftwood Canyon Provincial Park
Haverford College Arboretum
Arboretum La Alfaguara
Ecological thinning
Argyresthia dilectella
Duck decoy (model)
Macaria multilineata
Lithophane lemmeri
Epinotia granitalis
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Gymnostoma chamaecyparis (Poiss.) L.A.S.Johnson | Page 4 | Agriculture and Food
Material - Hinoki Chirimen from EasternLeaf.com; The Chamaecyparis obtusa' Chirimen' foliage displays a captivating mixture of...
Obtusa6
- Port Orford cedar or Lawson cypress - California, Oregon, Washington Chamaecyparis obtusa (Siebold & Zucc. (wikipedia.org)
- Suzuki - Taiwan Chamaecyparis thyoides (L.) Britton, Atlantic white cedar (among other names) - Eastern United States (Mississippi to Maine) Chamaecyparis taiwanensis is treated by many authors as a variety of C. obtusa (as C. obtusa var. (wikipedia.org)
- I know how to tell the growth rate of Piceas and Pinus, but how do you identify how much a Chamaecyparis obtusa or pisifera type tree grew in the previous year? (gardenweb.com)
- See who else is growing Chamaecyparis obtusa (Hinoki Cypress) . (growsonyou.com)
- The Chamaecyparis obtusa' Chirimen' foliage displays a captivating mixture of textures and colors. (easternleaf.com)
- A new phenolic glycoside from Chamaecyparis obtusa var. (bvsalud.org)
Pisifera7
- Japan Chamaecyparis pisifera (Siebold & Zucc. (wikipedia.org)
- Chamaecyparis pisifera is an evergreen Tree growing to 40 m (131ft) by 25 m (82ft) at a medium rate. (pfaf.org)
- A number of varieties exist including: Chamaecyparis pisifera form. (pfaf.org)
- Chamaecyparis pisifera form. (pfaf.org)
- Chamaecyparis pisifera var. (pfaf.org)
- Deer or something else chewed on my Chamaecyparis pisifera, so I would like to know more about its growth habits. (gardenweb.com)
- Other Chamaecyparis include Pisifera (Sarawa Cypress) which has dark green , scale-like leaves with white markings. (scottishbonsai.org)
Lawsoniana1
- Taiwan Chamaecyparis lawsoniana (A.Murray) Parl. (wikipedia.org)
Genus6
- Chamaecyparis, common names cypress or false cypress (to distinguish it from related cypresses), is a genus of conifers in the cypress family Cupressaceae, native to eastern Asia (Japan and Taiwan) and to the western and eastern margins of the United States. (wikipedia.org)
- Genus Fokienia is not always recognized as a separate genus from Chamaecyparis, in which case Chamaecyparis hodginsii (=Fokienia hodginsii) should be added to the above list. (wikipedia.org)
- On the other hand, a species which used to be included in this genus, as Chamaecyparis nootkatensis, had been transferred on the basis of strong genetic and morphological evidence to the separate genus Xanthocyparis as Xanthocyparis nootkatensis in the early 2000s. (wikipedia.org)
- Chamaecyparis ravenscragensis - (=Fokienia ravenscragensis), if genus Fokienia is not recognized. (wikipedia.org)
- See who else has plants in genus Chamaecyparis . (growsonyou.com)
- Chamaecyparis, commonly known as C ypress or false Cypress is a genus of conifers in the family Cupressaceae. (limecross.co.uk)
Thyoides4
- Chamaecyparis thyoides is a large evergreen, under cultivation it usually grows to 90 feet tall and between 20-25 feet wide. (backyardgardener.com)
- Chamaecyparis thyoides (L.) Britton, Sterns & Poggenb. (findmeacure.com)
- Chamaecyparis thyoides is an evergreen coniferous tree growing to 20-28 m (rarely to 35 m) tall, with feathery foliage in moderately flattened sprays, green to glaucous blue-green in color. (findmeacure.com)
- Chamaecyparis thyoides is of some importance in horticulture, with several cultivars of varying crown shape, growth rates and foliage color having been selected for garden planting. (findmeacure.com)
Nootkatensis1
- The majestic Chamaecyparis nootkatensis 'Pendula' (Nootka Cypress) is a medium-sized, evergreen conifer forming a strongly weeping, pyramidal tree. (gardenia.net)
False cypress1
- Not sure which Chamaecyparis (False Cypress) to pick? (gardenia.net)
Falsecypress1
- SNOW MELTED OFF THE 'CRIPPSII' last week, and from underneath a frosting of silvery-white this most charming of Chamaecyparis , the golden Hinoki falsecypress, showed its gleaming golden self again. (awaytogarden.com)
Evergreen1
- Chamaecyparis Pinpoint™ Blue and Gold is a lovely evergreen shrub that stands 15-20 foot tall and 4-5 foot wide creating a tall columnar habit. (gardencrossings.com)
Species2
- There are also several species described from the fossil record including: †Chamaecyparis eureka - Middle Eocene, Axel Heiberg Island, Canada. (wikipedia.org)
- Chamaecyparis species are used as food plants by the larva of some Lepidoptera species, including juniper pug and pine beauty. (wikipedia.org)
Wikimedia Commons1
- Wikimedia Commons has media related to Chamaecyparis. (wikipedia.org)
Formosensis2
- Chamaecyparis formosensis Matsum. (wikipedia.org)
- RAPD variation in relation to population differentiation of Chamaecyparis formosensis and Chamaecyparis taiwanensis. (wikipedia.org)
Search1
- Home » Organism Search » Gymnostoma chamaecyparis (Poiss. (wa.gov.au)
Shrub1
- Chamaecyparis Pinpoint™ Blue and Gold is a PROVEN WINNERS® COLORCHOICE® Shrub. (gardencrossings.com)
Gold1
- Hardy in zone 5(b)-7, Chamaecyparis Pinpoint™ Blue and Gold likes to be grown in full sun to part shade locations. (gardencrossings.com)
Plants1
- Chamaecyparis species are used as food plants by the larva of some Lepidoptera species, including juniper pug and pine beauty. (wikipedia.org)
Conifer1
- Chamaecyparis Obtusa Tsatsumi Gold is an RHS AGM-winning dwarf conifer with evergreen haphazard sprays of deep golden-yellow branches. (paramountplants.co.uk)
Cypress3
- Port Orford cedar or Lawson cypress - California, Oregon, Washington Chamaecyparis obtusa (Siebold & Zucc. (wikipedia.org)
- The species Chamaecyparis Obtusa is better known as Hinoki Cypress . (paramountplants.co.uk)
- The cultivar Hinoki Cypress Tsatsumi Gold originated in Japan in the 1980s as the sport of Chamaecyparis Obtusa Tsatsumi. (paramountplants.co.uk)
Habit1
- The Pinpoint® series of Chamaecyparis features a tall upright habit that stays tidy without needing to be trimmed. (gardencrossings.com)
Form1
- We offer a good Compact form of Chamaecyparis Ellwood's Pillar. (staffordlake.co.uk)
Media1
- Wikimedia Commons has media related to Chamaecyparis. (wikipedia.org)