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

PUBLISHED 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 mig...

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Bibliographic Details
Published in:Review of Palaeobotany and Palynology
Main Author: Harper, Carla
Format: Article in Journal/Newspaper
Language:English
Published: 2012
Subjects:
Fossil fungi
Tyloses
Wood
Phloem
Host response
Early Jurassic
Smart & Sustainable Planet
ANTARCTICA
FOSSIL
Fossil Wood
JURASSIC
Victoria Land
Antarc*
Antarctica
Online Access:http://hdl.handle.net/2262/96266
http://people.tcd.ie/charper
https://doi.org/10.1016/j.revpalbo.2012.02.006
https://www.sciencedirect.com/science/article/abs/pii/S003466671200036X
Description
Summary:PUBLISHED 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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