Characteristic changes in cell wall metabolism and related gene expression in different parts of Tarocco blood orange pulp during cold storage

Tarocco blood orange is mainly famous for easy mastication. Mastication is the most important quality attribute contributed or determined by parenchyma cell walls, which consisted of a mixture of pectin, lignin, and cellulose. However, there were few studies associated with the components of cell wa...

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Bibliographic Details
Published in:Acta physiologiae plantarum 2023-02, Vol.45 (2), Article 27
Main Authors: Xie, Jiao, Yin, Mingyue, Ren, Tingyuan, Li, Junliang, Tang, Shuyun, Wei, Shaofeng
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Cell walls
Cellulase
Cellulose
Cold storage
Fruits
Gene expression
Genes
Life Sciences
Lignin
Mastication
Metabolism
Oranges
Original Article
Parenchyma
Pectin
Plant Anatomy/Development
Plant Biochemistry
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
Pulp
Quality management
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Summary:Tarocco blood orange is mainly famous for easy mastication. Mastication is the most important quality attribute contributed or determined by parenchyma cell walls, which consisted of a mixture of pectin, lignin, and cellulose. However, there were few studies associated with the components of cell wall for blood orange during cold storage at present. In the present study, the protopectin content first increased and then decreased, the contents of soluble pectin, lignin and cellulose showed an increasing trend, and the activities of PME, POD and cellulase were consistent with the corresponding changes described above in the three pulp parts during cold storage. Therefore, the easy mastication of blood orange may be attributed to the decreased content of protopectin and increased content of water-soluble pectin during cold storage. Regarding the expression of genes related to pectin, lignin and cellulose metabolism, the upregulated genes PE 11, PE 17, PE 18 and PL 5 for pectin metabolism, POD 1, POD 40, POD 55 and LAC 15 for lignin accumulation and the downregulated genes EG 17 and RLSK 8 for cellulose, showed the greatest contributions to the changes of above-mentioned cell wall components during cold storage.
ISSN:0137-5881
1861-1664
DOI:10.1007/s11738-022-03506-3