Related Experiment Video
Updated: Jan 29, 2026
11:09
Relating Stomatal Conductance to Leaf Functional Traits
Published on: October 12, 2015
19.7K
Stomatal functioning in relation to leaf age in in-vitro-grown plum shoots
1Consiglio Nazionale delle Ricerche, Istituto di Biochimica ed Ecofisiologia Vegetali, Monterotondo Sc. (Roma), Italy, , , , , , IT.
Plant Cell Reports
|February 13, 2019
Summary
Stomatal closure response to abiotic stress decreases with leaf age in plum (Prunus cerasifera) shoots. Younger leaves exhibit more effective stomatal function and faster closure/re-opening kinetics.
Area of Science:
- Plant Physiology
- Abiotic Stress Response
Background:
- Stomata regulate gas exchange and water loss in plants.
- Leaf age influences physiological responses to environmental factors.
Purpose of the Study:
- To investigate the effect of leaf age on stomatal closure in response to abiotic stressors.
- To compare the efficacy of different abiotic treatments on stomatal closure across various leaf ages.
Main Methods:
- In vitro-grown plum (Prunus cerasifera) shoots were used.
- Epidermal peels from first, third, and fifth leaves were exposed to mannitol, coumarin, or darkness.
- Stomatal closure and re-opening kinetics were assessed.
Main Results:
- Stomatal closure percentage decreased with increasing leaf age.
- Mannitol induced a greater closure effect than coumarin.
- Stomatal closure response and re-opening were slower in older leaves.
Conclusions:
- Younger plum leaves exhibit more efficient stomatal closure and response to abiotic stress.
- Leaf ontogeny is a critical factor modulating stomatal sensitivity to environmental cues.
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