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Related Experiment Video

Updated: May 29, 2026

Assessing Stomatal Response to Live Bacterial Cells using Whole Leaf Imaging

Assessing Stomatal Response to Live Bacterial Cells using Whole Leaf Imaging

Published on: October 2, 2010

Hydrogen sulfide effects on stomatal apertures.

Miroslav Lisjak¹, Tihana Teklić, Ian D Wilson

¹Department of Agroecology, University of Josip Juraj Strossmayer, Osijek, Croatia.

Plant Signaling & Behavior

|September 10, 2011

Summary

Hydrogen sulfide (H(2)S) acts as a signaling molecule in plants, promoting stomatal opening. This gasotransmitter also reduces nitric oxide accumulation, suggesting broad applications in crop plants.

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Area of Science:

Plant Physiology
Biochemistry

Background:

Hydrogen sulfide (H(2)S) is recognized as a signaling molecule and gasotransmitter in animals.
Recent studies indicate H(2)S plays signaling roles in plants, specifically in stomatal regulation.

Purpose of the Study:

To investigate the role of hydrogen sulfide in stomatal opening and nitric oxide (NO) regulation in plants.
To determine if H(2)S effects observed in model plants extend to crop species.

Main Methods:

Application of H(2)S donors (NaSH, GYY4137) to plant tissues.
Measurement of stomatal aperture.
Quantification of nitric oxide (NO) levels after abscisic acid (ABA) treatment.

Main Results:

Hydrogen sulfide (H(2)S) induced stomatal opening in Arabidopsis thaliana.
Both H(2)S donors reduced abscisic acid (ABA)-induced nitric oxide (NO) accumulation.
Similar effects of H(2)S on stomatal opening and NO regulation were observed in the crop plant Capsicum annuum.

Conclusions:

Hydrogen sulfide (H(2)S) functions as a signaling molecule in plants, influencing stomatal aperture and NO signaling.
The observed effects of H(2)S are conserved across different plant species, including crop plants like Capsicum annuum.