Figure 5.
The effect of H2S on plant stress tolerance. ABA (abscisic acid), CO (carbon monoxide), GB (glycine betaine), Gly (glycine), H2S (hydrogen sulfide), MAPK (mitogen-activated protein kinase), MDA (malondialdehyde), PAs (polyamines), POD (peroxidase), Pro (proline), ROS (reactive oxygen species), SOD (superoxide dismutase).