Branched-chain amino acid catabolism initiates volatile synthesis in Gentiana triflora.

ABSTRACT:

Main conclusion

This study identified GeBCAT2 as a key gene in catalyzing the first step of branched chain amino acid biosynthesis in Gentiana triflora, thereby contributing to unpleasant floral odor emission. Gentians, widely cultivated as ornamental flowers in Japan, primarily originate from the endemic gentian species Gentiana triflora and G. scabra. This study analyzed volatile compounds in Japanese gentians using gas chromatography-mass spectrometry. Results showed that G. triflora flowers consistently emitted 3-methylbutanoic acid, 2-methylbutanoic acid, and isobutyric acid, which are volatile organic compounds derived from branched-chain amino acids (BCAAs) and associated with unpleasant odors. In contrast, G. scabra flowers did not emit these compounds. Although the BCAA me

SUBMITTER: Teshima T 

PROVIDER: S-EPMC12287140 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature