Hydrogen Sulfide and Stomatal Movement

SCUFFI, DENISE; GARCÍA-MATA, CARLOS

Hydrogen Sulfide and Plant Acclimation to Abiotic Stresses

Springer, Cham

Año: 2021; p. 1 - 238

Hydrogen sulfide (H2S) is a small gaseous molecule currently recognized as a ubiquitous signal molecule in both plants and animals. In plants it can be produced enzymatically in both cytosol and organelles such as mitochondria and chloroplasts, and its production increases in response to multiple stimuli, participating in different signaling networks through the interaction with numerous signal molecules. Guard cells are among the plant systems where H2S is most studied. These specialized cells are arranged in pairs to conform the stomatal pores, through which plants exchange gases (mainly CO2 for photosynthesis and water vapor for evapotranspiration) with the environment. In this chapter we will update the current knowledge on the role of H2S in the signaling network that commands stomatal movement in response to external and endogenous stimuli.