Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)

Evidence of fungal activity expressed as typical decay patterns is described from silicified podocarpaceous wood from the Eocene of Patagonia, Argentina. Decay features consist of tracheids of the secondary xylem that are degraded, resulting in thin-celled, lignin-free, translucent, circular to elli...

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Autores principales:	Pujana, R.R., Massini, J.L.G., Brizuela, R.R., Burrieza, H.P.
Formato:	JOUR
Materias:	Argentina Eocene Fungal activity Patagonia Podocarpaceous wood cellulose fossil record fungus gymnosperm lignin wood xylem South America Ascomycota Basidiomycota Fungi Gymnospermae Magnoliophyta
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00166995_v42_n5_p639_Pujana
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00166995_v42_n5_p639_Pujana
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spelling	todo:paper_00166995_v42_n5_p639_Pujana2023-10-03T14:14:34Z Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina) Pujana, R.R. Massini, J.L.G. Brizuela, R.R. Burrieza, H.P. Argentina Eocene Fungal activity Patagonia Podocarpaceous wood cellulose Eocene fossil record fungus gymnosperm lignin wood xylem Patagonia South America Ascomycota Basidiomycota Fungi Gymnospermae Magnoliophyta Evidence of fungal activity expressed as typical decay patterns is described from silicified podocarpaceous wood from the Eocene of Patagonia, Argentina. Decay features consist of tracheids of the secondary xylem that are degraded, resulting in thin-celled, lignin-free, translucent, circular to elliptical areas, some of which have cells devoid of all cell wall components including lignin, hemicellulose, and cellulose, and other areas that show only partial simultaneous decay of all cell wall layers. These patterns conform to the white rot and its variant white pocket rot decay patterns produced by basidiomycetes and ascomycetes in gymnosperm and angiosperm wood in modern terrestrial ecosystems. Coagulated opaque bodies in the lumen of some cells and enlarged secondary walls may represent host reactions to infection or remains of metabolic products of fungal enzymatic activity. Similar decay patterns and reaction features have been described from fossil woods ranging in age from the Devonian to the present. This record expands the fossil record of wood rot fungi and underscores their importance as drivers of biological cycles in ancient terrestrial ecosystems. © 2009 Elsevier Masson SAS. All rights reserved. Fil:Pujana, R.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00166995_v42_n5_p639_Pujana
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Argentina Eocene Fungal activity Patagonia Podocarpaceous wood cellulose Eocene fossil record fungus gymnosperm lignin wood xylem Patagonia South America Ascomycota Basidiomycota Fungi Gymnospermae Magnoliophyta
spellingShingle	Argentina Eocene Fungal activity Patagonia Podocarpaceous wood cellulose Eocene fossil record fungus gymnosperm lignin wood xylem Patagonia South America Ascomycota Basidiomycota Fungi Gymnospermae Magnoliophyta Pujana, R.R. Massini, J.L.G. Brizuela, R.R. Burrieza, H.P. Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)
topic_facet	Argentina Eocene Fungal activity Patagonia Podocarpaceous wood cellulose Eocene fossil record fungus gymnosperm lignin wood xylem Patagonia South America Ascomycota Basidiomycota Fungi Gymnospermae Magnoliophyta
description	Evidence of fungal activity expressed as typical decay patterns is described from silicified podocarpaceous wood from the Eocene of Patagonia, Argentina. Decay features consist of tracheids of the secondary xylem that are degraded, resulting in thin-celled, lignin-free, translucent, circular to elliptical areas, some of which have cells devoid of all cell wall components including lignin, hemicellulose, and cellulose, and other areas that show only partial simultaneous decay of all cell wall layers. These patterns conform to the white rot and its variant white pocket rot decay patterns produced by basidiomycetes and ascomycetes in gymnosperm and angiosperm wood in modern terrestrial ecosystems. Coagulated opaque bodies in the lumen of some cells and enlarged secondary walls may represent host reactions to infection or remains of metabolic products of fungal enzymatic activity. Similar decay patterns and reaction features have been described from fossil woods ranging in age from the Devonian to the present. This record expands the fossil record of wood rot fungi and underscores their importance as drivers of biological cycles in ancient terrestrial ecosystems. © 2009 Elsevier Masson SAS. All rights reserved.
format	JOUR
author	Pujana, R.R. Massini, J.L.G. Brizuela, R.R. Burrieza, H.P.
author_facet	Pujana, R.R. Massini, J.L.G. Brizuela, R.R. Burrieza, H.P.
author_sort	Pujana, R.R.
title	Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)
title_short	Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)
title_full	Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)
title_fullStr	Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)
title_full_unstemmed	Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)
title_sort	evidence of fungal activity in silicified gymnosperm wood from the eocene of southern patagonia (argentina)
url	http://hdl.handle.net/20.500.12110/paper_00166995_v42_n5_p639_Pujana
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Evidence of fungal activity in silicified gymnosperm wood from the Eocene of southern Patagonia (Argentina)

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