The biosynthetic pathway of L-ascorbic acid (vitamin C) in plants has been established for several years. However, recent reports describe alternative pathways, revealing a more complex picture of L-ascorbic acid biosynthesis than had been expected. GDP-L-gulose and myo-inositol are proposed as new intermediates in L-ascorbic acid biosynthesis, indicating that part of the animal pathway might also be operating in plants. Enzymatic studies on the GDP-mannose- 3′,5′-epimerase and L-galactono-1,4-lactone dehydrogenase suggest that they are important regulatory steps for L-ascorbic acid biosynthesis.
CITATION STYLE
Valpuesta, V., & Botella, M. A. (2004). Biosynthesis of L-ascorbic acid in plants: New pathways for an old antioxidant. Trends in Plant Science, 9(12), 573–577. https://doi.org/10.1016/j.tplants.2004.10.002
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