Tylosis formation and fungal interactions in an Early Jurassic conifer from northern Victoria Land, Antarctica

ACL-12-28 International audience Well-preserved fungi occur in permineralized conifer axes from the Lower Jurassic of northern Victoria Land, Antarctica. The fungus is characterized by septate hyphae extending through the vascular ray system via penetration of cross-field pits. Tyloses are present i...

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Bibliographic Details
Published in:Review of Palaeobotany and Palynology
Main Authors: Harper, Carla J., Bomfleur, Benjamin, Decombeix, Anne-Laure, Taylor, Edith L., Taylor, Thomas N., Krings, Michael
Other Authors: Department of Ecology and Evolutionary Biology, University of Kansas, University of Kansas Lawrence (KU), Equipe 2 " Architecture, Fonctionnement et Évolution des Plantes ", Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ), Bayerische Staatssammlung für Paläontologie und Geologie und GeoBio-Center
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2012
Subjects:
Host response
Early Jurassic
Phloem
Wood
Fossil fungi
Tyloses
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Victoria Land
Antarc*
Antarctica
Online Access:https://hal.archives-ouvertes.fr/halsde-00757088
https://doi.org/10.1016/j.revpalbo.2012.02.006
Description
Summary:ACL-12-28 International audience Well-preserved fungi occur in permineralized conifer axes from the Lower Jurassic of northern Victoria Land, Antarctica. The fungus is characterized by septate hyphae extending through the vascular ray system via penetration of cross-field pits. Tyloses are present in large numbers and might have been effective as a physical restraint to the spread of the fungus. However, knotted fungal hyphae within and around the tyloses suggest that the fungus was able to surmount the barriers. Hyphae are also present in the secondary phloem. This plant-fungal interaction contributes to a better understanding of the antagonistic relationships that existed between pathogenic fungi and conifers in the Jurassic paleoecosystems of Antarctica, as well as providing evidence of interactions between fungi and tyloses in Mesozoic wood.

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