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Updated: Dec 31, 2025
07:59
A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
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Evolution of Structural Diversity of Triterpenoids
Pablo D Cárdenas1, Aldo Almeida1, Søren Bak1
1Department of Plant and Environmental Science, University of Copenhagen, Frederiksberg, Denmark.
Frontiers in Plant Science
|January 11, 2020
Summary
Plants evolve diverse triterpenoids for adaptation, defense, and potential pharma uses. Gene duplication and evolution drive this structural variety, offering insights into plant specialized metabolism.
Area of Science:
- Plant biochemistry and molecular evolution
- Specialized metabolite biosynthesis
- Triterpenoid structural diversity
Background:
- Plants produce specialized metabolites, including over 14,000 known triterpenoid structures, crucial for adaptation, defense, and development.
- Triterpenoids originate from oxidized squalene precursors via oxidosqualene cyclases, forming diverse scaffolds through subsequent oxygenation and glycosylation.
- Understanding triterpenoid biosynthesis is vital for potential applications in the food and pharmaceutical industries.
Purpose of the Study:
- To review and discuss the evolutionary mechanisms driving triterpenoid structural diversity in plants.
- To examine convergent and divergent evolution in triterpenoid biosynthesis pathways.
- To highlight how single structural modifications impact triterpenoid biological properties using *Barbarea vulgaris* saponins as examples.
Main Methods:
- Review of existing literature on triterpenoid biosynthesis and evolution.
- Analysis of gene organization patterns (gene clusters vs. scattered genes, tandem repeats).
- Case study using *Barbarea vulgaris* saponins to illustrate structure-activity relationships.
Main Results:
- Gene duplication, divergence, and selection are key drivers of triterpenoid structural diversification.
- Triterpenoid biosynthetic genes exhibit varied organization, including non-homologous clusters and scattered paralogous genes.
- Evolutionary processes lead to significant structural modifications, impacting biological properties.
Conclusions:
- Plants continuously evolve their specialized metabolomes, particularly triterpenoids, through mechanisms like gene duplication and divergence.
- Studying specific examples, like *B. vulgaris* saponins, reveals how minor structural changes yield significant functional differences.
- This work provides a framework for investigating uncharacterized triterpenoid biosynthetic pathways and their evolutionary origins.
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