Cavitation resistance
nounPronunciation: /ˌkævɪˈteɪʃən rɪˈzɪstəns/
The capacity of vascular tissues to prevent or recover from embolism formation when water column tension exceeds the breaking point in xylem vessels. This property reflects structural and physiological adaptations that maintain water transport continuity under severe dehydration stress.
Plain English
A plant's ability to prevent or survive the breaking of water columns in its transport tubes during severe drying conditions.
Etymology & History
Usage
"Desert shrubs exhibit greater cavitation resistance than mesic species, enabling survival during prolonged drought."
Style guide notes: Avoid conflating with general drought tolerance; specify mechanism (prevention versus recovery).
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What structural features confer cavitation resistance?
Smaller vessel diameter, thicker vessel walls, and pit membrane characteristics reduce embolism initiation and spread.
Can plants recover from cavitation?
Yes, some species refill embolized vessels through root pressure or stored parenchymal water during recovery periods.
Why Test Candidates on This?
Specialized topic relevant to advanced plant physiology and wood anatomy examinations focusing on hydraulic architecture.
Required skill level: Expert