Investigations concerning cavitation and frost fatigue in clonal 84K poplar using high-resolution cavitron measurements

Plant Physiology
Feng FengMelvin T Tyree

Abstract

Both drought and freezing-thawing of stems induce a loss of hydraulic conductivity (percentage loss of conductivity [PLC]) in woody plants. Drought-induced PLC is often accompanied by physical damage to pit membranes, causing a shift in vulnerability curves (cavitation fatigue). Hence, if cavitated stems are flushed to remove embolisms, the next vulnerability curve is different (shifted to lower tensions). The 84K poplar (Populus alba × Populus glandulosa) clone has small vessels that should be immune from frost-induced PLC, but results demonstrated that freezing-thawing in combination with tension synergistically increased PLC. Frost fatigue has already been defined, which is similar to cavitation fatigue but induced by freezing. Frost fatigue caused a transition from a single to a dual Weibull curve, but drought-fatigued stems had single Weibull curves shifted to lower tensions. Studying the combined impact of tension plus freezing on fatigue provided evidence that the mechanism of frost fatigue may be the extra water tension induced by freezing or thawing while spinning stems in a centrifuge rather than direct ice damage. A hypothesis is advanced that tension is enhanced as ice crystals grow or melt during the freeze or thaw...Continue Reading

References

Oct 18, 2001·Journal of Experimental Botany·T AméglioF W Ewers
Apr 25, 2002·Journal of Experimental Botany·Volker Stiller, John S Sperry
Jun 1, 1987·Plant Physiology·R W JohnsonM A Dixon
Nov 1, 1988·Plant Physiology·J S Sperry, M T Tyree
Dec 14, 2011·The New Phytologist·Mairgareth A ChristmanDuncan D Smith
Oct 15, 2013·Plant, Cell & Environment·Karen K Christensen-Dalsgaard, Melvin T Tyree
Dec 3, 2014·Plant, Cell & Environment·Régis FichotReinhart Ceulemans

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Citations

Dec 9, 2017·Plant, Cell & Environment·Wen ZhangMelvin T Tyree
Nov 5, 2019·The New Phytologist·Stefan MayrEric Badel
Apr 28, 2021·Plant Physiology·Feng FengStefan Mayr
Sep 16, 2021·Physiologia Plantarum·Têtè Sévérien BarigahMaría Elena Fernández

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