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You are here: Home / Library / RBINS Staff Publications 2023 / Fossil evidence of tylosis formation in Late Devonian plants

Anne-Laure Decombeix, Carla Harper, Cyrille Prestianni, Thibaut Durieux, Merlin Ramel, and Michael Krings (2023)

Fossil evidence of tylosis formation in Late Devonian plants

Nature Plants.

Tyloses are swellings of parenchyma cells into adjacent water-conducting cells that develop in vascular plants as part of heartwood formation or specifically in response to embolism and pathogen infection. Here we document tyloses in Late Devonian (approximately 360 Myr ago) Callixylon wood. This discovery suggests that some of the earliest woody trees were already capable of protecting their vascular system by occluding individual conducting cells.
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  • DOI: 10.1038/s41477-023-01394-0

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