Nitric oxide (NO) modulates plant response by post-translationally modifying proteins, mainly through S-nitrosylation. Ascorbate peroxidase (APX) in the ascorbate-glutathione (AsA-GSH) cycle participates removal of hydrogen peroxide (H2O2). However, relationship between S-nitrosylation and role tomato APX (SlAPX) under nitrate stress is still unclear. In this study, enzyme activity, mRNA expres...
