The difference of the cell wall metabolism between ‘Fuyan’ and ‘Dongbi’ longans and its relationship with the pulp breakdown

• Published in: Current research in food science 2023-01, Vol.6, p.100496-100496, Article 100496
• Main Authors: Lin, Lijuan, Chen, Yazhen, Lin, Hetong, Lin, Yixiong, Fan, Zhongqi, Wang, Hui, Lu, Wangjin, Chen, Jianye, Chen, Yihui, Lin, Yifen
• Format: Article
• Language: English
• Subjects: Cell wall polysaccharides; Cell wall-degrading enzymes; Cultivars; from the special issue: 6th International Symposium on Phytochemicals in Medicine and Food, edited by Jianbo Xiao, Jinping Si and Huifan Liu; Gene expression; Longan fruit; Pulp breakdown
• ISSN: 2665-9271; 2665-9271
• DOI: 10.1016/j.crfs.2023.100496

The aims of present works were to explore the difference in pulp breakdown of ‘Fuyan’ and ‘Dongbi’ longans and its relationship with cell wall metabolism. Comparison with ‘Fuyan’ longan fruit, postharvest ‘Dongbi’ longan fruit showed lower pulp breakdown index, lower activities of PE, PG, cellulase, β-Gal, XET, and lower expression levels of their corresponding genes. In addition, higher levels of cell wall polysaccharides including ISP, CSP, cellulose and hemicellulose were exhibited in ‘Dongbi’ longan pulp. These findings implied that, the reduced activities of enzymes and the down-regulated expressions of genes-involved in cell wall disassembly were shown in ‘Dongbi’ longan pulp, which might reduce the dissolution of polysaccharides and maintain a higher structural integrity in ‘Dongbi’ longan pulp cell wall, and consequently the mitigated pulp breakdown was displayed in ‘Dongbi’ longan during storage. [Display omitted] •Dongbi longan showed a higher level of pulp cell wall materials than Fuyan longan.•Dongbi longan had higher contents of pulp cell wall polysaccharides than Fuyan longan.•Dongbi longan had lower pulp cell wall degrading enzymes activities than Fuyan longan.•Dongbi longan had lower expression level of cell wall degrading enzymes related-genes.•Dongbi longan had better integrity of the pulp cell wall structure than Fuyan longan.