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Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
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Structure Elucidation and Biosynthesis of Orobanchol
Takatoshi Wakabayashi1, Kotomi Ueno2, Yukihiro Sugimoto1
1Graduate School of Agricultural Science, Kobe University, Kobe, Japan.
Frontiers in Plant Science
|February 28, 2022
Summary
Strigolactones, plant hormones regulating development, were identified as germination stimulants. This review details the discovery of orobanchol
Area of Science:
- Plant Biology
- Biochemistry
- Organic Chemistry
Background:
- Strigolactones (SLs) are crucial phytohormones regulating plant development.
- Orobanchol, a prevalent SL, was initially isolated as a germination stimulant but its structure was debated.
- Understanding SL stereochemistry is vital for seed germination in parasitic plants like Striga.
Purpose of the Study:
- To review the historical discovery of orobanchol's genuine structure.
- To elucidate current knowledge on orobanchol biosynthesis pathways.
- To highlight the importance of SL structural diversity and agricultural applications.
Main Methods:
- Literature review of historical and recent studies on strigolactones.
- Analysis of research on orobanchol isolation and structural elucidation.
- Synthesis of findings on orobanchol biosynthetic pathways.
Main Results:
- The genuine structure of orobanchol was established after a decade-long controversy.
- Two pathways involving Cytochrome P450 monooxygenases in orobanchol biosynthesis downstream of carlactonoic acid (CLA) were identified.
- Progress in identifying SL structures and biosynthetic mechanisms is advancing comprehension of their functional importance.
Conclusions:
- The elucidation of orobanchol's structure significantly advanced the understanding of SLs.
- Ongoing research into orobanchol biosynthesis provides insights into plant hormone pathways.
- Further studies on SLs promise to enhance agricultural applications through understanding structural diversity.
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