1. Sanxiapeptin is an ideal preservative with a dual effect of controlling green mold and inducing systemic defense in postharvest citrus.
- Author
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Li J, Bai X, Zhu G, Liu S, Liu C, Wu M, Zou K, Li A, and Liu S
- Subjects
- Antifungal Agents pharmacology, Antifungal Agents chemistry, Food Preservation methods, Fungicides, Industrial pharmacology, Fungicides, Industrial chemistry, Citrus microbiology, Citrus chemistry, Penicillium growth & development, Penicillium drug effects, Plant Diseases microbiology, Fruit microbiology, Fruit chemistry, Fruit growth & development, Fruit drug effects, Food Preservatives pharmacology
- Abstract
Green mold is a common postharvest disease infected by Penicillium digitatum that causes citrus fruit decay, and severely affects fruit storage quality. This work aimed to investigate the antifungal activity of Sanxiapeptin against P. digitatum, and elucidate the possible mechanisms involved. Sanxiapeptin was capable of inhibiting spore germination, germ tube length and mycelial growth. The SYTOX green staining assay revealed that Sanxiapeptin targeted the fungal membrane, and changed the membrane permeability, leading to the leakage of cell constituents. Meanwhile, Sanxiapeptin could influence the cell wall permeability and integrity by increasing the activities of chitinase and glucanase, resulting in abnormal chitin consumption and the decrease of glucan. Intriguingly, Sanxiapeptin could effectively control postharvest decay in citrus fruits, and activate the host resistance responses by regulating the phenylpropanoid pathway. In conclusion, Sanxiapeptin exhibits multiphasic antifungal mechanisms of action to control green mold in citrus fruits, shows great potential as novel food preservatives., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Ltd.)
- Published
- 2024
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