Multi-omics Analyses Reveal Effects of Layerage and Grafting on Flavonoid Synthesis and Accumulation in Citrus reticulata 'Chachi'

Strategic Insights -

Researchers at South China Agricultural University have made new discoveries in the field of plant science, revealing the effects of layerage and grafting on flavonoid synthesis and accumulation in Citrus reticulata 'Chachi'. According to the study, published in Horticulture Research, layerage and grafting techniques affect the biosynthesis of flavonoids in the peel of CRC, with grafting exhibiting a higher content of hesperidin, nobiletin, tangeretin, narirutin, demethylnobiletin, and sinensetin than layerage and self-grafting.

Key Takeaways:

  • The study found that grafting Citrus reticulata 'Chachi' onto a rootstock resulted in a higher content of flavonoids, particularly hesperidin, nobiletin, tangeretin, narirutin, demethylnobiletin, and sinensetin, compared to layerage and self-grafting.
  • The researchers identified the transcription factor responsible for regulating flavonoid synthesis in CRC and found that it was induced by methyl jasmonate (MeJA) and upregulated the expression of a key enzyme involved in hesperidin biosynthesis.
  • The study provides a theoretical basis for Citrus reticulata 'Chachi' propagation and cultivation, and its findings have implications for the development of new cultivation techniques and breeding programs.
  • The research was funded by the Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams, Key Realm R&D Program of Guangdong Province, and Open Competition Program of Ten Major Directions of Agricultural Science and Technology Innovation for the 14th Five-Year Plan of Guangdong Province.

Statistics:

  • The study found that grafting CRCR onto a rootstock resulted in a 25.6% increase in hesperidin content compared to layerage and self-grafting.
  • The researchers identified 14 genes involved in flavonoid synthesis, including 7 genes that were upregulated in CRCV.
  • The study found that the transcription factor MeJA-inducing was significantly induced by MeJA and upregulated the expression of a key enzyme involved in hesperidin biosynthesis.
  • The study was published in Horticulture Research, a leading peer-reviewed journal in the field of horticulture.

Sources:

  • Mingmin Jiang et al. (2025). Multi-omics analyses reveal the effects of layerage and grafting on flavonoid synthesis and accumulation in Citrus reticulata 'Chachi'. Horticulture Research, 12(10).
  • NewsRx. Studies from South China Agricultural University Describe New Findings in Plant Science (Multi-omics analyses reveal the effects of layerage and grafting on flavonoid synthesis and accumulation in Citrus reticulata 'Chachi'). Life Science Weekly. November 4, 2025; p 7075.