The needles of species contain a large number of bioactive compounds, such as flavonoids. In the present study, the total flavonoid content in leaves of and was 19.953 and 14.464 mg/g, respectively. A total of 197 flavonoid metabolites (70 flavones, 42 flavonols, 26 flavone C-glycosides, 20 flavanones, 15 anthocyanins, 13 isoflavones, 6 flavonolignans, and 5 proanthocyanidins) were identified for the first time by a widely targeted Ultra Performance Liquid Chromatography-Electrospray Ionization-Tandem Mass Spectrometry (UPLC-ESI-MS/MS) method within the two species, containing 160 common metabolites, with 37 unique metabolites merely determined in or . Moreover, 42 differential flavonoid metabolites were screened in the two species, which showed specific metabolic patterns in isoflavonoid biosynthesis, anthocyanin biosynthesis, and flavone and flavonol biosynthesis pathways. Compared to , a more activated phenylpropanoid pathway was found in , which could be responsible for the higher content of total flavonoids in . Our results provide new insights into the diversity of flavonoid metabolites between and , and provide a theoretical basis for the sufficient utilization of species and the development of novel drugs.
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| http://dx.doi.org/10.3390/molecules24183323 | DOI Listing |
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