A Coupled GSH/GSNOR System Denitrosylates TRXh5 to Allow Activation of SA Signalling by Oxidative Stress.

doi:10.1111/pce.70423

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A Coupled GSH/GSNOR System Denitrosylates TRXh5 to Allow Activation of SA Signalling by Oxidative Stress.

Plant, cell & environment - 1 May 2026

Chen Tao, Li Shengchun, Mu Xiujie, Yang Tianzhao, Wang Lijuan, Tian Mimi, Yu Mei, Luo Long, Xie Yuanming, Xuan Wei, Noctor Graham, Han Yi

Abstract excerpt

Accumulating evidence shows that reversible protein S-nitrosylation is essential for H2O2 homoeostasis and signalling. However, roles for denitrosylation in such oxidative signalling remain poorly understood. Here, we examined this question using the Arabidopsis catalase-defective mutant, cat2, in which oxidative stress induces both glutathione accumulation and salicylic acid (SA) pathways. Induction of these...

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