Control of Alternaria alternata by sodium alginate and natamycin treatments of sweet cherry

文献类型： 外文期刊

第一作者： Cao, Jindi

作者： Cao, Jindi;He, Ling;Sun, Jian;Shao, Zhiwei;Fan, Huimei;Hao, Lishan;Wang, Ying;Song, Zhifeng;Sun, Jian;Shao, Zhiwei;Fan, Huimei;Hao, Lishan;Wang, Ying;Song, Zhifeng;Yan, Jiawei

作者机构：

关键词： Jimei' sweet cherry; Disease resistance; Postharvest quality

期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY （ 影响因子：3.3； 五年影响因子：3.2 ）

ISSN： 0885-5765

年卷期： 2024 年 134 卷

页码：

收录情况： SCI

摘要： Natamycin, a natural antifungal produced through fermentation by streptomyces, can promote postharvest disease resistance in fruit. Sodium alginate is often used as film-forming matrices for fabricating antibacterial composite coatings for the preservation of fruit and vegetables. This study investigated the inhibitory effects of sodium alginate, natamycin, or combined treatment on Alternaria alternata infection in 'Jimei' sweet cherry postharvest using various biochemical and enzyme assays along with spectrophotometry. The results showed that the combined treatment of natamycin and sodium alginate inhibited the development of A. alternata. After 7 d of treatment, the lesion diameter of the combined treatment fruit was 64.4 % lower than that of the control. Further studies showed that the combined treatment significantly reduced the contents of hydrogen peroxide (H2O2), superoxide anion (O-2(center dot-)) and malondialdehyde (MDA) in the fruit defense system, and enhanced the activities of antioxidant enzymes, chitinase (CHI) and beta-1,3-glucanase (GLU). The results showed that the combined treatment of postharvest natamycin and sodium alginate effectively enhanced disease resistance by inhibiting the production of reactive oxygen species (ROS) and activating defense-related proteins in cherry fruits.

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