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Abstract:

The anatomy and ultrastructure of subfossil wood of Fitzroya cupressoides from the late Pleistocene (>50,000 14C years before present) were compared with those of extant F. cupressoides trees from southern Chile, using light microscopy (polarized light and fluorescence), scanning electron microscopy coupled with an energy dispersive X-ray spectroscopy system, and transmission electron microscopy. The ancient wood showed an unchanged gross wood structure, loss of cell wall birefringence, loss of lignin autofluorescence, and a loss of the original microfibrillar pattern. The energy dispersive X-ray spectroscopy analysis indicated higher than normal contents of S, Cl, and Na in subfossil wood. Ultrastructural modifications in the cell wall of the subfossil wood could have important implications for further studies involving isotopic and wood anatomical measurements of ancient wood.

Registro:

Documento: Artículo
Título:Wood ultrastructure of ancient buried logs of Fitzroya cupressoides
Autor:Castro, M.A.; Roig, F.A.
Filiación:Laboratorio de Anatomía Vegetal, DBBE-FCEN, Pab II, (1428) Buenos Aires, Argentina
Laboratorio de Dendrocronología e Historia Ambiental, IANIGLA-CRICYT, CC 330, (5500) Mendoza, Argentina
Palabras clave:Cell wall ultrastructure; Fitzroya cupressoides; Pleistocene subfossil wood; SEM-EDXA analysis; TEM; Wood anatomy; Fitzroya cupressoides
Año:2007
Volumen:28
Número:2
Página de inicio:125
Página de fin:137
Título revista:IAWA Journal
Título revista abreviado:IAWA J.
ISSN:09281541
CODEN:IAJOE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09281541_v28_n2_p125_Castro

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Citas:

---------- APA ----------
Castro, M.A. & Roig, F.A. (2007) . Wood ultrastructure of ancient buried logs of Fitzroya cupressoides. IAWA Journal, 28(2), 125-137.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09281541_v28_n2_p125_Castro [ ]
---------- CHICAGO ----------
Castro, M.A., Roig, F.A. "Wood ultrastructure of ancient buried logs of Fitzroya cupressoides" . IAWA Journal 28, no. 2 (2007) : 125-137.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09281541_v28_n2_p125_Castro [ ]
---------- MLA ----------
Castro, M.A., Roig, F.A. "Wood ultrastructure of ancient buried logs of Fitzroya cupressoides" . IAWA Journal, vol. 28, no. 2, 2007, pp. 125-137.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09281541_v28_n2_p125_Castro [ ]
---------- VANCOUVER ----------
Castro, M.A., Roig, F.A. Wood ultrastructure of ancient buried logs of Fitzroya cupressoides. IAWA J. 2007;28(2):125-137.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09281541_v28_n2_p125_Castro [ ]