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dc.date.accessioned 2017-11-03T14:34:28Z
dc.date.available 2017-11-03T14:34:28Z
dc.identifier.uri http://digital.cic.gba.gob.ar/handle/11746/6349
dc.title Leaf and culm silicification of Pampas grass (Cortaderia selloana) developed on different soils from Pampean region, Argentina en
dc.type Artículo es
dcterms.abstract Amorphous silica accumulation in grasses is widely described in numerous species; however, work done in relation to the factors affecting this accumulation in the tissues and different type of cells, is still incipient. Here, we analysed a perennial tussock grass, Cortaderia selloana (Schult. & Schult.f.) Asch. & Graebn. (Pampas grass), a native and widely spread species from South America, which is also considered an invasive plant in many regions of the world.Weanalysed the relation between silicification process, soil type and environment, and anatomical features. Silicophytolith content and distribution in plants was analysed through calcination and staining techniques and SEM-EDAX analyses. Silicophytolith content was higher in leaves (2.48–5.54% DW) than in culms (0.29–0.43% DW) and values were similar to other tussock grasses. A relationship between the habit of a grass species and the potential maximum content of amorphous silica is suggested. Plants grown in soils from modified environments with high silica content (Anthrosol and Tecnosol) produced a higher content of amorphous silica. In leaves, the distribution of silicified cells was conditioned by leaf xeromorphic features. Soil Si content and environmental conditions (radiation, disturbance) are more relevant in silicification process than phenological factors. Within leaves, the accumulation of amorphous silica is conditioned by anatomy and transpiration. en
dcterms.extent 10 p. es
dcterms.issued 2017-02-01
dcterms.language Inglés es
dcterms.license Attribution-NonCommercial-NoDerivatives 4.0 International (BY-NC-ND 4.0) es
dcterms.publisher Csiro Publishing es
dcterms.spatial Región Pampeana (Argentina) es
dcterms.subject amorphous silica en
dcterms.subject biomineralisations en
dcterms.subject coastal soils en
dcterms.subject silicophytoliths en
dcterms.subject tussock grasses en
dcterms.subject xeromorphic anatomy en
cic.version info:eu-repo/semantics/publishedVersion es
dcterms.creator.author Fernández Honaine, Mariana es
dcterms.creator.author Borrelli, Natalia L. es
dcterms.creator.author Osterrieth, Margarita es
dcterms.creator.author del Río, Julio Luis es
cic.lugarDesarrollo Instituto de Geología de Costas y del Cuaternario es
dcterms.subject.materia Geología es
dcterms.identifier.url Recurso online es
dcterms.identifier.other DOI org/10.1071/BT16154 es
dcterms.isPartOf.issue vol. 65, no. 1 es
dcterms.isPartOf.series Australian Journal of Botany es
cic.isPeerReviewed true es
cic.isFulltext true es


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