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Exogenous Melatonin Attenuates Post-harvest Decay by Increasing the Antioxidant Activity of Wax Apple (Syzygium samarangense)

ABSTRACT: Exogenous Melatonin Attenuates Post-harvest Decay by Increasing the Antioxidant Activity of Wax Apple (Syzygium samarangense)

PROVIDER: PRJNA624360 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11538445_1.fastq.gz	Fastqsanger.gz
	SRR11538445_2.fastq.gz	Fastqsanger.gz
	SRR11538446_1.fastq.gz	Fastqsanger.gz
	SRR11538446_2.fastq.gz	Fastqsanger.gz
	SRR11538447_1.fastq.gz	Fastqsanger.gz

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Exogenous Melatonin Attenuates Post-harvest Decay by Increasing the Antioxidant Activity of Wax Apple (Syzygium samarangense)

Project description:Our experiments show that exogenous MT treatment can effectively delay the decay and water loss rate of post-harvest wax apples, which may be related to reducing the degree of membrane lipid peroxidation and inhibiting enzymatic browning. MT treatment also maintains the quality of post-harvest wax apple by enhancing the activity of antioxidant enzymes. At the same time, it can reduce the incidence of post-harvest diseases of wax apple by increasing the JA and SA contents. MT can down-regulate the expression of genes related to oxidation, and up-regulate the expression of related genes in antioxidant enzymes and non-enzymatic antioxidant pathways, suggesting that exogenous melatonin can reduce the production of excess ROS and maintain the redox homeostasis of post-harvest wax apple. Therefore, melatonin, as a strong and effective free radical scavenger and antioxidant, plays an important role in delaying the decay of post-harvest wax apples and prolonging the shelf life.

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Exogenous Melatonin Attenuates Post-Harvest Decay by Increasing Antioxidant Activity in Wax Apple (<i>Syzygium samarangense</i>).

Project description:Wax apple is one of the most popular tropical fruit but undergoes serious post-harvest decay during storage, transportation and marketing. Melatonin (MT) plays important roles in plant growth, development and stress responses. However, its function in post-harvest preservation of fruit remains largely unknown. In the present study, the physiological function and molecular mechanism of exogenous MT for post-harvest preservation were evaluated in wax apple fruit. Results showed that MT treatment remarkably reduced decay incidence and the accumulation of excess reactive oxygen species (ROS) but increased the activity of antioxidant enzymes, suggesting that exogenous MT alleviates the post-harvest decay of wax apple by regulating the balance between ROS production and antioxidant system. Meanwhile, the gene expression was analyzed by transcriptome confirmed by quantitative PCR. This study provides insights into the regulatory mechanism and proper application strategies for post-harvest preservation of wax apple and other fruits though melatonin manipulation.

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