Keywords: Hydrogen sulfide; Signaling pathway; Cysteine; Sulfur metabolism; Chromium stress; ABRC; Arabidopsis Biological Resource Center; AsA; Ascorbic acid; CASC; β-cyanoalanine synthase; CDes; Cys desulfhydrases; Cr; Chromium; Cys; Cysteine; DES; desulfhydrase;