Sodium nitroprusside (SNP) treatment increases the postharvest resistance of apple fruit to Alternaria alternata by enhancing antioxidant enzyme activity

文献类型： 外文期刊

第一作者： Han, Jie

作者： Han, Jie;Fan, Yingying;Sun, Tao;An, Jing;Liu, Fengjuan;Wang, Cheng;Han, Jie;Fan, Yingying;Sun, Tao;An, Jing;Liu, Fengjuan;Wang, Cheng;Han, Jie;Fan, Yingying;Sun, Tao;An, Jing;Liu, Fengjuan;Wang, Cheng;Han, Jie;Fan, Yingying;Sun, Tao;An, Jing;Liu, Fengjuan;Wang, Cheng;Han, Jie;Liu, Fengjuan;Wang, Cheng;Ding, Yu;Zhang, Weiwei

作者机构：

关键词： Apple; Black spot disease; Storage quality; Disease resistance; Reactive oxygen species

期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY （ 影响因子：2.7； 五年影响因子：2.9 ）

ISSN： 0885-5765

年卷期： 2024 年 129 卷

页码：

收录情况： SCI

摘要： Black spot disease, caused by the fungal pathogen Alternaria alternata, commonly infects apple (Malus domestica) during postharvest storage and transportation, diminishing fruit quality, contaminating the fruit with toxins, and causing significant economic losses. Here, we investigated the effect of 0.1 mmol L-1 sodium nitroprusside (SNP), a nitric oxide donor, on lesion diameter, fruit quality, and reactive oxygen species (ROS) metabolism in A. alternata-inoculated apples. SNP not only effectively decreased lesion diameter but also maintained fruit quality and cell membrane integrity. Additionally, SNP enhanced antioxidant enzyme activity and genes encoding of peroxidase (POD), glutathione reductase (GR), superoxide dismutase (SOD), ascorbate peroxidase (APX), and catalase (CAT), and decreased hydrogen peroxide (H2O2) and superoxide anion (O-2(center dot-)) production, malondialdehyde (MDA) concentration, and membrane permeability. Collectively, these results demonstrate that SNP inhibits ROS accumulation and increases antioxidant enzyme activity, and that the mechanism of SNP-induced resistance is related to the regulation of ROS metabolism.

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