Hydrogen sulfide interacts with calcium signaling to enhance the chromium tolerance in Setaria italica

The summary of the crosstalk between H2S and Ca2+ signaling in foxtail millet responding to Cr6+ stress. This study exhibited that H2S interacts with Ca2+ signaling to enhance the Cr6+ tolerance in foxtail millet by activation of the HM chelators and regulation of the antioxidant system. H2S dependent manner is a necessary way in which Ca2+ activated the synthesis of MT and PC by up-regulating the expressions of MT3A and PCS. H2S dependent pathway is a component of the Ca2+ activating antioxidant system and H2S partially contributes Ca2+-activating antioxidant system.