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Permanent link (DOI): https://doi.org/10.7939/R3J09WH92

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Nobody’s perfect: Can irregularities in pit structure influence vulnerability to cavitation? Open Access

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Author or creator
Plavcová, Lenka
Jansen, Steven
Klepsch, Matthias M.
Hacke, Uwe G.
Additional contributors
Subject/Keyword
Pit Membrane
Pit Ontogeny
Bordered Pit
Pit Damage
Xylem Vulnerability
Structural Irregularity
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Recent studies have suggested that species-specific pit properties such as pit membrane thickness, pit membrane porosity, torus-to-aperture diameter ratio and pit chamber depth influence xylem vulnerability to cavitation. Despite the indisputable importance of using mean pit characteristics, considerable variability in pit structure within a single species or even within a single pit field should be acknowledged. According to the rare pit hypothesis, a single pit that is more air-permeable than many neighboring pits is sufficient to allow air-seeding. Therefore, any irregularities or morphological abnormalities in pit structure allowing air-seeding should be associated with increased vulnerability to cavitation. Considering the currently proposed models of air-seeding, pit features such as rare, large pores in the pit membrane, torus extensions, and plasmodesmatal pores in a torus can represent potential glitches. These aberrations in pit structure could either result from inherent developmental flaws, or from damage caused to the pit membrane by chemical and physical agents. This suggests the existence of interesting feedbacks between abiotic and biotic stresses in xylem physiology.
Date created
2013
DOI
doi:10.7939/R3J09WH92
License information
Attribution 4.0 International
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Citation for previous publication
Plavcová, L., Jansen, S., Klepsch, M., and Hacke, U. (2013). Nobody’s perfect: Can irregularities in pit structure influence vulnerability to cavitation?. Frontiers in Plant Science, 4(November), 453 [6 pages].
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File format: pdf (Portable Document Format)
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File title: Nobody's perfect: can irregularities in pit structure influence vulnerability to cavitation?
File author: Lenka Plavcová
File author: Lenka Plavcov
Page count: 6
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