Overexpression of S-nitrosoglutathione reductase alleviated iron-deficiency stress by regulating iron distribution and redox homeostasis

文献类型： 外文期刊

第一作者： Wen, Dan

作者： Wen, Dan;Sun, Shasha;Yang, Wanying;Zhang, Lili;Liu, Shiqi;Gong, Biao;Shi, Qinghua;Wen, Dan

作者机构：

关键词： Tomato; Iron deficiency; S-Nitrosoglutathione reductase; Reactive oxygen species; S-Nitrosylation

期刊名称：JOURNAL OF PLANT PHYSIOLOGY （ 影响因子：3.549； 五年影响因子：4.164 ）

ISSN： 0176-1617

年卷期： 2019 年 237 卷

页码：

收录情况： SCI

摘要： Iron (Fe) is an essential micronutrient element for plant growth. The S-nitrosoglutathione reductase (GSNOR) gene's functions under Fe-deficiency conditions are not well understood. Here, GSNOR expression was induced by Fe deficiency in tomato (Solanum lycopersicum L.) leaves and roots, while its overexpression alleviated chlorosis under Fe-deficiency conditions. GSNOR overexpression positively regulated the Fe distribution from root to shoot, which might result from the transcriptional regulation of genes involved in Fe metabolism. Additionally, the overexpression of GSNOR maintained redox homeostasis and protected chloroplasts from Fedeficiency-related damage, resulting in a greater photosynthetic capacity. As a nitric oxide regulator, GSNOR's overexpression decreased the excessive accumulation of nitric oxide and S-nitrosothiols during the Fe deficiency, and maintained the homeostases of reactive oxygen species and reactive nitrogen species. Moreover, GSNOR overexpression, probably at the level of genes and proteins, along with protein S-nitrosylation, promoted Fe uptake and regulated the shoot/root Fe ratio under Fe-deficiency conditions.

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[1]Overexpression of S-nitrosoglutathione reductase alleviated iron-deficiency stress by regulating iron distribution and redox homeostasis. Wen, Dan,Sun, Shasha,Yang, Wanying,Zhang, Lili,Liu, Shiqi,Gong, Biao,Shi, Qinghua,Wen, Dan. 2019

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