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Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Study on differences in flavonoid synthesis in Xanthoceras sorbifolia leaves based on transcriptome analysis.
Baotong Zheng1, Xiaojiao Zhou1, Xing Tao1
1Nanjing Forestry University, College of Soil and Water Conservation, College of Forestry and Grassland, Collaborative Innovation Center for Sustainable Forestry in Southern China, Nanjing, China.
Frontiers in Plant Science
|July 6, 2026
Summary
Xanthoceras sorbifolia leaves accumulate flavonoids through distinct strategies. High-flavonoid plants upregulate key genes like 4CL and FLS, enhancing synthesis and stress tolerance for medicinal applications.
Area of Science:
- Plant biochemistry and molecular biology
- Phytochemistry and medicinal plant research
Background:
- Xanthoceras sorbifolia is a valuable woody plant with potential for biodiesel and medicinal compounds.
- Flavonoids in X. sorbifolia leaves have medicinal value, but their biosynthesis pathways are not well understood.
Purpose of the Study:
- To investigate the molecular mechanisms behind differential flavonoid accumulation in Xanthoceras sorbifolia leaves.
- To identify key genes and pathways involved in flavonoid biosynthesis.
Main Methods:
- Transcriptome analysis of Xanthoceras sorbifolia leaf samples from clones with varying flavonoid levels.
- Quantitative analysis of flavonoid content.
- Phenotypic and physiological characteristics analysis.
Main Results:
- Flavonoid content varied significantly among clones (60.59 mg/g, 49.62 mg/g, 41.12 mg/g).
- High-flavonoid lines showed enhanced antioxidant capacity, metabolic investment, transport efficiency, and stress tolerance.
- Gene expression analysis revealed positive correlations between flavonoid content and genes like C12RT1, FLS, and 4CL, and negative correlations with FG2 and LAR.
Conclusions:
- Three distinct flavonoid synthesis strategies were proposed for Xanthoceras sorbifolia.
- Upregulation of 4CL and FLS, and downregulation of competing pathways, contribute to high flavonoid accumulation.
