scholarly journals Caracterización estructural de un bosque pantanoso sin intervención antrópica en la comuna de Pitrufquén, Chile

2021 ◽  
Vol 4 (6) ◽  
pp. 39-52
Author(s):  
Rodrigo Tiznado-Granzotto
Keyword(s):  
Drimys Winteri

Los bosques pantanosos de la zona Centro - Sur de Chile se distribuyen entre las regiones de Coquimbo a Los Lagos (30°- 41°28´ S). Destacan en la región de La Araucanía los bosques pantanosos denominados Pitrantos, dominados por Blepharocalyx cruckshanksii y Myrceugenia exsucca. Actualmente, los pitrantos se encuentran bajo el permanente estrés de las actividades antrópicas y podrían convertirse en ecosistemas extintos antes de ser científicamente conocidos. El objetivo de este trabajo es caracterizar estructuralmente un bosque pantanoso sin intervención antrópica en la comuna de Pitrufquén, Chile. Para esto, se estableció en el área de estudio una parcela rectangular de 300 m2 en donde se registró la especie arbórea, se midió la altura y el DAP de todos los individuos de tipo latizal, se contó el número de brinzales de cada especie y, finalmente, se contabilizó el número de plántulas en 50 subparcelas de 1 m2, distribuidas dentro de la misma parcela de muestreo. El bosque pantanoso establecido en el sitio de estudio se encuentra conformado por nueve especies arbóreas, todas latifoliadas, perennifolias y nativas; la más abundante Myrceugenia exsucca con 11.928 individuos por hectárea; seguida por Drimys winteri con 5.952 individuos y alturas totales máximas de 20 y 18 metros, respectivamente. Posee una estructura típica en cuanto a la altitud y longitud en donde se establece, y se encuentra regenerando con especies propias a una avanzada dinámica sucesional.

Shoot organogenesis in tissue culture of Drimys Winteri

1981 ◽  
Vol 23 (2) ◽  
pp. 177-180
Author(s):  
Miguel Jordan ◽  
Irma Cortes
Keyword(s):  
Tissue Culture ◽  
Shoot Organogenesis ◽  
Drimys Winteri

scholarly journals Trees, shrubs and herbs of the coastal Myrtaceae swamp forest (Región de La Araucanía, Chile): a dataset

2021 ◽  
Vol 9 ◽  
Author(s):  
Jimmy Pincheira-Ulbrich ◽  
Elías Andrade Mansilla ◽  
Fernando Peña-Cortés ◽  
Cristián Vergara Fernández
Keyword(s):  
Introduced Species ◽  
Vascular Plants ◽  
Prunus Avium ◽  
Woody Debris ◽  
Anthropogenic Pressure ◽  
Swamp Forest ◽  
Main Trunk ◽  
Systematic Classification ◽  
Tristerix Corymbosus ◽  
Drimys Winteri

Species lists are fundamental for knowledge of species diversity in regions subject to intense anthropogenic pressure, especially in poorly-studied ecosystems. The dataset comes from an inventory conducted in 30 fragments of Myrtaceae swamp forest, located in an agroforestry matrix landscape of the coastal La Araucanía Region in Chile. The data collection was carried out using line transect sampling, which was traced through the core of each fragment orientated towards its longest axis. The dataset provides a record of 55 species (24 trees, 1 vine [as a host], 16 herbs and 15 shrubs) including accidental epiphytes (n = 7), hemiparasites (n = 4), host (n = 10) and additionally woody debris (n = 36). The most frequent trees in the landscape were Myrceugenia exsucca (n = 36 records) and Blepharocalyx cruckshanksii (n = 33 records), species that were also the most common hosts. Drimys winteri was a companion species, other trees and shrubs generally being rarely observed, as was the case of the introduced species (Prunus avium, Rubus constrictus and Ulex europaeus). Branches were the most common microhabitat for hemiparasites. Within this group, Lepidoceras chilense was the most frequent species. For accidental epiphytes, Drimys winteri, which commonly grows on the ground (soil), were the most common species found in the main trunk crotch. Some unusual observations were the climber Cissus striata as host of Tristerix corymbosus (hemiparasite) and Tristerix corymbosus as host of Lepidoceras chilense (hemiparasite). This study represents a landscape-scale sample of the swamp forest, which is distributed in a dispersed pattern over a large stretch of Chile. The data were collected from 30 forest patches (from 0.05 to 936 ha), located on the coast of the Araucanía. The database includes the presence of 55 species of vascular plants in 356 records. The main novelty of this contribution is the systematic classification of species under six traits, never before reported in the same database: (i) condition (coarse woody debris, fallen log, live, snag), (ii) habit (herb, shrub, tree), (iii) growth microhabitat (e.g. tree trunk, branch, main trunk crotch), (iv) growth form (accidental epiphyte, hemiparasite, terricolous, vegetative), (v) host species (as appropriate) and (vi) relative location of the species in the sampled patch and surrounding areas (core, border, matrix). Species not previously observed in these forests were: Gavilea spp., Hieracium spp., Lophosoria quadripinnata, Berberis actinacantha, Gaultheria phillyreifolia, Ovidia pillo-pillo, Amomyrtus meli and Caldcluvia paniculata. In addition, two introduced species are novelties for the catalogue of vascular plants of Chile (Cupressus macrocarpa and Prunus avium). Several of these ecosystem traits are indeed new reports for these types of forests (e.g. accidental epiphytes, fallen logs, species-host relationship); at the same time, more frequent data (i.e. species composition, habit) are found in different contributions, making the comprehensive process of analysis difficult. Accordingly, the database is made available in this manuscript.

Drimenol, isodrimeninol and polygodial isolated from Drimys winteri reduce monocyte adhesion to stimulated human endothelial cells

2020 ◽  
Vol 146 ◽  
pp. 111775
Author(s):  
Viviana Burgos ◽  
Cristian Paz ◽  
Kathleen Saavedra ◽  
Nicolás Saavedra ◽  
Mary Ann Foglio ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Monocyte Adhesion ◽  
Human Endothelial Cells ◽  
Drimys Winteri

scholarly journals Comparison of the Essential Oils of Leaves and Stem Bark from Two Different Populations of Drimys Winteri a Chilean Herbal Medicine

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Orlando Muñoz ◽  
Phlippe Christen ◽  
Silvian Cretton ◽  
Alejandro F. Barrero ◽  
Armando Lara ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Herbal Medicine ◽  
Essential Oils ◽  
Stem Bark ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Different Populations ◽  
Main Components ◽  
Chemical Groups ◽  
Drimys Winteri

The chemical composition of the essential oils obtained by hydrodistillation of stem bark and leaves of Drimys winteri J.R. et G. Foster var. chilensis /DC A. Gray ( Winteraceae) from Chiloe Island (ID) and Continental Chile (Santiago) (CD) were studied by GC and GC/MS. Sesquiterpene hydrocarbons constituted the main chemical groups in the stem bark oils, with α-santalene, trans-β-bergamotene and curcumenes as the major components. Monoterpenes constituted the main chemical groups in the leaves of Island plants with α-pinene (23.1%) β-pinene (43.6%) and linalool (10.5%) as the main components whereas sesquiterpenes (germacrene D 17.6%) and phenylpropanoids (safrole 20.8%) are the most abundant in the leaves of Continental plants.

Dendocarbin A: a sesquiterpene lactone fromDrimys winteri

2014 ◽  
Vol 70 (11) ◽  
pp. 1007-1010 ◽  
Author(s):  
Cristian Paz Robles ◽  
Viviana Burgos ◽  
Sebastián Suarez ◽  
Ricardo Baggio
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Sesquiterpene Lactone ◽  
Natural Compound ◽  
Intermolecular Hydrogen Bonding ◽  
Screw Axis ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
First Time ◽  
Drimys Winteri

The natural compound dendocarbin A, C15H22O3, is a sesquiterpene lactone isolated for the first time fromDrimys winterifor var chilensis. The compound crystallizes in the orthorhombic space groupP212121and its X-ray crystal structure confirmed theS/Rcharacter of the chiral centres at C-5/C-10 and C-9/C-11, respectively. The α-OH group at C-11 was found to be involved in intermolecular hydrogen bonding, defining chains along the <100> 21screw axis.

Isolation and identification of active compounds from Drimys winteri barks

1998 ◽  
Vol 62 (3) ◽  
pp. 223-227 ◽  
Author(s):  
Valdir Cechinel Filho ◽  
Valfredo Schlemper ◽  
Adair R.S Santos ◽  
Tânia R Pinheiro ◽  
Rosendo A Yunes ◽  
...  
Keyword(s):  
Isolation And Identification ◽  
Active Compounds ◽  
Drimys Winteri

scholarly journals Funciones de volumen, modelos de crecimiento y factor de forma para Drimys winteri Forst

1990 ◽  
Vol 4 (2) ◽  
pp. 228-236
Author(s):  
Iván Quiroz Marchant
Keyword(s):  
Drimys Winteri

La capacidad colonizadora del Canelo (Drymis winteri Forst.) le ha permitido establecerse en forma pura o mezclada, predominando los bosques con desarrollo juvenil clasificados como renovales. Es un árbol que puede alcanzar alturas de 25 a 30 m, presenta tronco cilíndrico de hasta un 1 m de diámetro con corteza gruesa, lisa, blanda y de color gris ceniciento.

scholarly journals Embryology of Drimys winteri

1968 ◽  
Vol 49 (4) ◽  
pp. 509-524
Author(s):  
N. N. Bhandari ◽  
Revathi Venkataraman
Keyword(s):  
Drimys Winteri
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