This book describes the three gasotransmitters nitric oxide (NO), hydrogen sulphide (H₂S) and carbon monoxide (CO) and their function as intracellular signalling molecules in plants.

Common properties are shared by NO, H₂S and CO: they are beneficial at low concentrations but hazardous in higher amounts; they are small molecules of gas; they can freely cross cell membranes; their effects do not rely on receptors; they are generated enzymatically and their production is regulated; their functions can be mimicked by exogenous application; and their cellular...