Abstract
As an ancient relict species, Ginkgo biloba has not only unique evolutionary status, but also outstanding medicinal value. Flavonoids, as the main medicinal components of G. biloba leaves, are widely involved with the molecular mechanism of their synthesis and regulation, an aspect which needs to be further studied. Besides this, there is still a lack of global systematic analyses of G. biloba secondary metabolites, which may introduce a bottleneck to subsequent investigations of their properties. In this study, a total of 780 metabolites were successfully identified from G. biloba mature leaves across different growth stages by combining transcriptome and metabolome data, potentially providing the most detailed summary of metabolites in G. biloba leaves to date. In addition, based on joint analysis and experimental verification, the co-regulation mechanism of flavonoid and stilbene synthesis was also preliminarily found, together with the genes and metabolites highly associated with flavonoid synthesis. These resources could fill in the blanks in the G. biloba metabolome landscape and may help to reveal the regulatory rules of these important metabolites.
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