Abstract: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 in the removal of hydrogen peroxide (H2O2). However, the relationship between S-nitrosylation and the role of tomato APX (SlAPX) under nitrate stress is still unclear. In this study, the enzyme activity, mRNA expression, and S-nitrosylation level of SlAPX were significantly increased in tomato roots after nitr… Show more
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