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Updated: Jun 29, 2026

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis
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MYB17-DFR/LDOX Module Positively Regulates Cyanidin Deposition in Cinnamomum Camphora.

Shupei Rao1, Xue Gong1, Le Shen1

  • 1Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species, Institute of Resources and Environment, Jiangxi Academy of Sciences, Nanchang, Jiangxi, China.

Plant, Cell & Environment
|June 12, 2026
PubMed
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Researchers identified cyanidin as key to the colored stems of

Area of Science:

  • Plant Science
  • Molecular Biology
  • Genetics

Background:

  • Cinnamomum camphora (camphor tree) is a valuable ornamental species.
  • Limited landscaping value due to uniform green foliage and brown bark.

Purpose of the Study:

  • Characterize the colored camphor variety 'Gantong 1'.
  • Identify the molecular mechanism behind stem coloration.
  • Investigate the role of CcMYB17 in pigment accumulation.

Main Methods:

  • Correlation analysis to identify key genes.
  • Yeast one-hybrid and luciferase reporter assays for functional validation.
  • Multi-omics analysis in a poplar model system.

Main Results:

Keywords:
Cinnamomum camphoraMYBanthocyaninmetabolomemolecular mechanism

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  • Cyanidin content is critical for 'Gantong 1' stem coloration.
  • Transcription factor CcMYB17 is crucial for cyanidin accumulation.
  • CcMYB17 activates anthocyanin biosynthesis genes (CcDFR, CcLDOX), regulating cyanidin and delphinidin accumulation.

    • Conclusions:

    • Elucidated the color mechanism of 'Gantong 1'.
    • Demonstrated CcMYB17's role in regulating anthocyanin biosynthesis.
    • Provides a foundation for molecular-assisted breeding of colored woody trees.