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Related Experiment Video

Updated: Dec 28, 2025

Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM
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A Leaf Selfie: Using a Smartphone to Quantify Leaf Vulnerability to Hydraulic Dysfunction.

Francesco Petruzzellis1, Martina Tomasella1, Andrea Miotto1

  • 1Dipartimento di Scienze della Vita, Università di Trieste, Via L. Giorgieri 10, 34127 Trieste, Italy.

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Summary

This study introduces a simple optical method using a smartphone to measure leaf vulnerability to xylem embolism. This technique allows for accessible quantification of plant drought tolerance, crucial for climate change impact modeling.

Keywords:
droughtembolismleafoptical methodsmartphoneveinvulnerability

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Area of Science:

  • Plant physiology
  • Ecology
  • Climate change biology

Background:

  • Accurate species distribution models require mechanistic links between climate and plant physiology.
  • Leaf vulnerability to xylem embolism is a critical trait for understanding drought tolerance.

Purpose of the Study:

  • To develop and validate a simple, accessible optical method for measuring leaf vulnerability to xylem embolism.
  • To enable widespread quantification of a key plant drought tolerance trait.

Main Methods:

  • A novel optical setup utilizing a smartphone, light source, and notebook was employed.
  • The method measures leaf vulnerability to xylem embolism in major leaf veins.

Main Results:

  • The proposed smartphone-based setup accurately quantifies leaf vulnerability to xylem embolism.
  • Results for *Populus nigra* and *Ostrya carpinifolia* align with established methods for temperate tree species.

Conclusions:

  • This accessible method allows for the quantification of species-specific drought tolerance.
  • The technique supports improved mechanistic modeling of species distribution under climate change.