FIGURE 5.

MgH₂-CBS maintains redox homeostasis via H₂S. (A) Cut flower stems were incubated in solutions containing 0.1 g L^–1 MgH₂-CBS, 600-μM NaHS, 10-mM HT, alone or their combinations throughout the vase period. The petals were stained with 3,3-diaminobenzidine (DAB), then photographed under a light microscope (scale bar = 1 mm). (B) Spectrophotography also determined H₂O₂ contents. Values are mean ± SE of three independent experiments with three replicated for each.