Effect and Underlying Mechanism of Melatonin Treatment on Rhizopus Rot in Postharvest Peach Fruit

被引：0
|
作者：
Dong X. [1 ]
Tang J. [1 ]
Ding J. [1 ]
Jin P. [1 ]
Zheng Y. [1 ]
机构：
[1] College of Food Science and Technology, Nanjing Agricultural University, Nanjing
来源：
Shipin Kexue/Food Science | 2024年 / 45卷 / 11期
关键词：
induced resistance; melatonin; peach fruit; priming; Rhizopus rot;
D O I：
10.7506/spkx1002-6630-20230918-160
中图分类号：
学科分类号：
摘要：
The protective effect and underlying mechanism of melatonin (MT) treatment against Rhizopus stolonifer in postharvest peach fruit (Prunus persica (L.) Batsch cv ‘Xiahui 8’) were studied. Freshly harvested peaches were inoculated with R. stolonifer following pretreatment with different concentrations of MT (0, 0.05, 0.10, 0.50 and 1.00 mmol/L) and then stored at 20 ℃ for up to 60 h. Disease development was measured to determine the most effective MT concentration. Subsequently, the effects of MT treatment on quality parameters, total phenol and lignin contents, disease resistance-related enzyme activity and gene expression in peaches during postharvest storage, and the in vitro growth of R. stolonifer were investigated. The results showed that 0.50 mmol/L MT treatment could most significantly reduce the occurrence of Rhizopus rot and maintain postharvest fruit quality. Furthermore, compared with either of them alone, R. stolonifer inoculation after MT treatment exhibited stronger disease resistance response, resulting in a marked increase in the activities of chitinase (CHI), β-1,3-glucanase (GLU), phenylalanine ammonia lyase (PAL), cinnamate 4-hydroxylase (C4H), 4-coumarate-CoA ligase (4CL), peroxidase (POD) and polyphenol oxidase (PPO), the contents of total phenols and lignin, and the expression levels of defense-related genes such as those encoding CHI (PpCHI), GLU (PpGLU), PAL (PpPAL) and POD (PpPOD). Moreover, MT treatment had no significant inhibitory effect on the growth of R. stolonifer in vitro. Taken together, these results indicate that MT can initiate defense responses to pathogenic infection indirectly by priming defense, thereby reducing the occurrence of peach postharvest diseases. © 2024 Chinese Chamber of Commerce. All rights reserved.
引用
收藏
页码：243 / 249
页数：6
相关论文
共 26 条
  • [1] FAN Q, TIAN S P., Postharvest biological control of Rhizopus rot of nectarine fruits by Pichia membranefaciens, Plant Disease, 84, 11, pp. 1212-1216, (2000)
  • [2] CHEN S N, SHANG Y, WANG Y, Et al., Sensitivity of Monilinia fructicola from peach farms in China to four fungicides and characterization of isolates resistant to carbendazim and azoxystrobin, Plant Disease, 98, 11, pp. 1555-1560, (2014)
  • [3] ROMANAZZI G, SANZANI S M, BI Y, Et al., Induced resistance to control postharvest decay of fruit and vegetables, Postharvest Biology and Technology, 122, 12, pp. 82-94, (2016)
  • [4] CONRATH U, BECKERS G J M, FLORS V, Et al., Priming: getting ready for battle, Molecular Plant-Microbe Interactions, 19, 10, pp. 1062-1071, (2006)
  • [5] ARNAO M B, HERNANDEZ-RUIZ J., Functions of melatonin in plants: a review, Journal of Pineal Research, 59, 2, pp. 133-150, (2015)
  • [6] TaNG Q, LI C Y, GE Y H, Et al., Exogenous application of melatonin maintains storage quality of jujubes by enhancing anti-oxidative ability and suppressing the activity of cell wall-degrading enzymes, LWTFood Science and Technology, 127, (2020)
  • [7] ONIK J C, WaI S C, LI A, Et al., Melatonin treatment reduces ethylene production and maintains fruit quality in apple during postharvest storage, Food Chemistry, 337, (2021)
  • [8] JANNATIZADEH A., Exogenous melatonin applying confers chilling tolerance in pomegranate fruit during cold storage, Scientia Horticulturae, 246, pp. 544-549, (2019)
  • [9] ZHaNG Z K, WaNG T, LIU G S, Et al., Inhibition of downy blight and enhancement of resistance in litchi fruit by postharvest application of melatonin, Food Chemistry, 347, pp. 129009-129019, (2021)
  • [10] ZHaNG L L, YU Y W, CHaNG L L, Et al., Melatonin enhanced the disease resistance by regulating reactive oxygen species metabolism in postharvest jujube fruit, Journal of Food Processing and Preservation, 46, 3, pp. 1-11, (2022)
123