Branch whorls of juvenile Araucaria araucana (Molina) Koch: are they formed annually?
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منابع مشابه
Arbuscular mycorrhizal infection in two morphological root types of Araucaria araucana (Molina) K. Koch.
Araucaria araucana (Molina) K. Koch is a conifer distributed in the Andean-Patagonian forests in the south of Argentina and Chile. The main objective of this work was to relate the different root classes appearing in A. araucana to mycorrhizal behavior. Samples were collected in three different sites in the Lanín National Park (NW Patagonia, Argentina). Two different root classes were present i...
متن کاملAntifungal and antibacterial activities of Araucaria araucana (Mol.) K. Koch heartwood lignans.
Five lignans (secoisolariciresinol, pinoresinol, eudesmin, lariciresinol, and lariciresinol-4-methyl ether) were isolated from an MeOH extract from Araucaria araucana (Mol.) K. Koch wood for the first time in this species and their structures determined with spectroscopic methods. The antimicrobial activities of these compounds were determined for the bacteria Citrobacter sp., Bacillus subtilis...
متن کاملGastroprotective effect and cytotoxicity of natural and semisynthetic labdane diterpenes from Araucaria araucana resin.
The resin of the tree Araucaria araucana (Araucariaceae) is used by the Mapuche Amerindians in southern Chile and Argentina to treat ulcers and has been shown to display a gastroprotective effect in animal models. A study was undertaken to isolate, identify and assess the gastroprotective effect of the resin constituents and its semisynthetic derivatives as well as to evaluate the cytotoxicity ...
متن کاملSaccharomyces eubayanus and Saccharomyces uvarum associated with the fermentation of Araucaria araucana seeds in Patagonia.
Mudai is a traditional fermented beverage, made from the seeds of the Araucaria araucana tree by Mapuche communities. The main goal of the present study was to identify and characterize the yeast microbiota responsible of Mudai fermentation as well as from A. araucana seeds and bark from different locations in Northern Patagonia. Only Hanseniaspora uvarum and a commercial bakery strain of Sacch...
متن کاملMorphology and structure of the pollen cone and pollen grain of the Araucaria species from Argentina.
The pollen cone and the pollen grain of the two Argentinean species of Araucaria are described with LM, SEM and TEM. Primordia of pollen cones are formed in April and May and reach maturity by mid-October in A. angustifolia (Bert.) O. Kuntze and by mid-November in A. araucana. (Mol.) K. Koch. Characters of the mature pollen cones and microsporophylls between both taxa are clearly differentiated...
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ژورنال
عنوان ژورنال: Revista chilena de historia natural
سال: 2000
ISSN: 0716-078X
DOI: 10.4067/s0716-078x2000000300013