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Related Experiment Video

Updated: Feb 12, 2026

A Drosophila Model to Study Wound-induced Polyploidization

A Drosophila Model to Study Wound-induced Polyploidization

Published on: June 9, 2020

The effect of polyploidization on tree hydraulic functioning.

Niels J F De Baerdemaeker¹, Niek Hias², Jan Van den Bulcke³

¹Laboratory of Plant Ecology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000, Ghent, Belgium.

American Journal of Botany

|March 24, 2018

Summary

Polyploid apple trees (Gala-4x) showed no overall difference in drought vulnerability compared to diploid (Gala-2x) trees. However, tetraploids offered higher hydraulic capacitance, potentially delaying drought effects in short water deficits.

Keywords:

Malus Polyploidy acoustic vulnerability curves desorption curves drought stress embolism water transport wood xylem vulnerability

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Published on: August 19, 2018

Area of Science:

Plant physiology
Wood anatomy
Polyploidy research

Background:

Living wood tissue plays a crucial role in plant drought tolerance.
Polyploidization can alter wood's cellular structure, potentially enhancing drought resistance.

Purpose of the Study:

To compare drought-induced cavitation vulnerability and hydraulic capacitance between tetraploid (Gala-4x) and diploid (Gala-2x) apple trees.
To investigate the correlation between polyploidy, wood anatomy, and hydraulic traits.

Main Methods:

Quantified cavitation vulnerability and hydraulic capacitance using acoustic emission and shoot dehydration.
Measured anatomical variables including vessel area, conduit diameter, cell wall reinforcement, and parenchyma content.
Compared tetraploid (Gala-4x) and diploid (Gala-2x) apple tree variants.

Main Results:

Drought-induced cavitation vulnerability was intrinsically equal between ploidy variants.
Tetraploid Gala-4x exhibited a lower air entry value, indicating greater vulnerability during early desiccation.
Gala-4x demonstrated significantly higher hydraulic capacitance and efficiency due to increased water content, parenchyma, and vessel size.

Conclusions:

Neither polyploid nor diploid apple trees showed significant differences in overall drought vulnerability.
Tetraploid variants may mitigate drought impact during short, moderate deficits by utilizing stored water from living tissues.
This suggests a trade-off between hydraulic safety and capacitance in polyploid plants under water stress.