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Background <p>Bioinformatics studies of fruit responses to postharvest mechanical damage provide crucial insights for cultivar improvement, logistics optimization, and quality monitoring. However, systematic multi‑omics analyses of Dongzao under such stress remain limited.</p> Results <p>Here, an integrated bioinformatics approach elucidates key molecular pathways activated in Dongzao to counteract compression injury through coordinated physical and chemical defense mechanisms. Following mechanical injury, key genes involved in lignin biosynthesis (4CL, CAD, POD, and LAC) were up-regulated, activating pathways such as phenylpropanoid biosynthesis, terpenoid backbone biosynthesis, and glycerolipid metabolism, thereby promoting the synthesis of antioxidant and protective compounds. Within the phenylpropanoid biosynthesis pathway, 51 differentially expressed genes and four differential metabolites were identified, suggesting that the fruit primarily responds to mechanical stress through enhanced lignin biosynthesis.</p> Conclusions <p>This study elucidates the multiple metabolic mechanisms by which Dongzao resists compressive mechanical damage, providing crucial biological targets for subsequent technical optimization and cultivar breeding.</p> Graphical abstract <p></p>

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Multi-omics analysis of the metabolic regulatory network in response to mechanical damage stress in Dongzao

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月22日

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  • Yanjun Ma,
  • Jie Ma,
  • Jia Wang,
  • Jun Luo,
  • Qiuyan Song,
  • Hongjin Bai,
  • Peng Chen

摘要

Background

Bioinformatics studies of fruit responses to postharvest mechanical damage provide crucial insights for cultivar improvement, logistics optimization, and quality monitoring. However, systematic multi‑omics analyses of Dongzao under such stress remain limited.

Results

Here, an integrated bioinformatics approach elucidates key molecular pathways activated in Dongzao to counteract compression injury through coordinated physical and chemical defense mechanisms. Following mechanical injury, key genes involved in lignin biosynthesis (4CL, CAD, POD, and LAC) were up-regulated, activating pathways such as phenylpropanoid biosynthesis, terpenoid backbone biosynthesis, and glycerolipid metabolism, thereby promoting the synthesis of antioxidant and protective compounds. Within the phenylpropanoid biosynthesis pathway, 51 differentially expressed genes and four differential metabolites were identified, suggesting that the fruit primarily responds to mechanical stress through enhanced lignin biosynthesis.

Conclusions

This study elucidates the multiple metabolic mechanisms by which Dongzao resists compressive mechanical damage, providing crucial biological targets for subsequent technical optimization and cultivar breeding.

Graphical abstract