Are fairy chemicals a new family of plant hormones?

Hirokazu KAWAGISHI
2019 Proceedings of the Japan Academy. Series B, Physical and biological sciences  
2-Azahypoxanthine (AHX, 1) and imidazole-4-carboxamide (ICA, 2) were isolated from a fairy-ring-forming fungus Lepista sordida. AHX was converted into a metabolite 2-aza-8-oxo-hypoxanthine (AOH, 3) in plants. It was found out that these three compounds, named as fairy chemicals (FCs), endogenously exist in plants and are biosynthesized via a new purine metabolic pathway. FCs provided tolerance to the plants against various stresses and regulated the growth of all the plants. In addition, FCs
more » ... reased the yield of rice, wheat, and other crops in the greenhouse and/or field experiments.
doi:10.2183/pjab.95.003 pmid:30643094 pmcid:PMC6395780 fatcat:zykxl7x5ebglbeogwkh7wgfblm