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Article

Transcriptome Profiles Reveal the Promoting Effects of Exogenous Melatonin on Fruit Softening of Chinese Plum

by
Zhiyu Li
,
Lu Zhang
,
Yaxin Xu
,
Xuemei Zhang
,
Yanzhou Zhu
,
Jin Wang
,
Hui Xia
,
Dong Liang
,
Xiulan Lv
and
Lijin Lin
*
College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2023, 24(17), 13495; https://doi.org/10.3390/ijms241713495
Submission received: 9 August 2023 / Revised: 24 August 2023 / Accepted: 29 August 2023 / Published: 30 August 2023
(This article belongs to the Section Molecular Plant Sciences)
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Abstract

In this study, we investigated the effect of exogenous melatonin (MT) on cell wall metabolism leading to Chinese plum (Prunus salicina Lindl.) fruit softening. Exogenous MT treatment increased the endogenous MT content in plum fruits before fruit ripening. However, in mature plum fruits, exogenous MT treatment decreased the fruit hardness, pulp hardness, fruit elasticity, contents of ion-bound pectin, covalently-bound pectin, hemicellulose, and cellulose, and activities of xyloglucan endotransglycosylase/hydrolase and endo-β-1,4-glucanase, and increased the water-soluble pectin content, and activities of pectin methyl esterase, pectin lyase, polygalacturonase, β-galactopyranosidase, and α-L-arabinofuranosidase. Transcriptome analysis revealed that the differentially expressed genes (DEGs) associated with cell wall metabolism in the exogenous MT-treated plum fruits were mainly enriched in the pentose and glucuronate interconversions, phenylpropanoid biosynthesis, cyanoamino acid metabolism, and galactose metabolism pathways. Analysis of these DEGs revealed that exogenous MT treatment affected the expression of genes regulating the cell wall metabolism. Overall, exogenous MT treatment promotes the fruit softening of Chinese plum.
Keywords: melatonin; softening; cell wall metabolism; plum fruit; transcriptome analysis melatonin; softening; cell wall metabolism; plum fruit; transcriptome analysis

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MDPI and ACS Style

Li, Z.; Zhang, L.; Xu, Y.; Zhang, X.; Zhu, Y.; Wang, J.; Xia, H.; Liang, D.; Lv, X.; Lin, L. Transcriptome Profiles Reveal the Promoting Effects of Exogenous Melatonin on Fruit Softening of Chinese Plum. Int. J. Mol. Sci. 2023, 24, 13495. https://doi.org/10.3390/ijms241713495

AMA Style

Li Z, Zhang L, Xu Y, Zhang X, Zhu Y, Wang J, Xia H, Liang D, Lv X, Lin L. Transcriptome Profiles Reveal the Promoting Effects of Exogenous Melatonin on Fruit Softening of Chinese Plum. International Journal of Molecular Sciences. 2023; 24(17):13495. https://doi.org/10.3390/ijms241713495

Chicago/Turabian Style

Li, Zhiyu, Lu Zhang, Yaxin Xu, Xuemei Zhang, Yanzhou Zhu, Jin Wang, Hui Xia, Dong Liang, Xiulan Lv, and Lijin Lin. 2023. "Transcriptome Profiles Reveal the Promoting Effects of Exogenous Melatonin on Fruit Softening of Chinese Plum" International Journal of Molecular Sciences 24, no. 17: 13495. https://doi.org/10.3390/ijms241713495

APA Style

Li, Z., Zhang, L., Xu, Y., Zhang, X., Zhu, Y., Wang, J., Xia, H., Liang, D., Lv, X., & Lin, L. (2023). Transcriptome Profiles Reveal the Promoting Effects of Exogenous Melatonin on Fruit Softening of Chinese Plum. International Journal of Molecular Sciences, 24(17), 13495. https://doi.org/10.3390/ijms241713495

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