Abstract:
:We performed an integrated analysis of the transcriptome and metabolome from purple (Pr) and normal cultivated varieties (CK) of Dendrobium officinale to gain insights into the regulatory networks associated with phenylpropanoid metabolism and to identify the key regulatory genes of pigmentation. Metabolite and transcript profiling were conducted by ultra-performance liquid chromatography electrospray tandem mass spectrometry (UPLC-ESI-MS/MS) and RNA sequencing. Pr had more flavonoids in the stem than did CK. Metabolome analyses showed that 148 differential metabolites are involved in the biosynthesis of phenylpropanoids, amino acids, purines, and organic acids. Among them, the delphinidin and quercetin derivatives were significantly higher in Pr. A total of 4927 differentially expressed genes (DEGs) were significantly enriched (p ≤ 0.01) in 50 Gene Ontology (GO) terms. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses revealed significantly enriched phenylpropanoid biosynthesis and phytohormone signal transduction in Pr versus CK. The expression levels of flavanone 3-hydroxylase (F3H) and leucoanthocyanidin dioxygenase (LDOX) affected the flux of dihydroflavonol, which led to a color change in Pr. Moreover, DEG enrichment and metabolite analyses reflected flavonoid accumulation in Pr related to brassinosteroid (BR) and auxin metabolism. The results of this study elucidate phenylpropanoid biosynthesis in D. officinale.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Zhan X,Qi J,Zhou B,Mao Bdoi
10.1038/s41598-020-74789-0subject
Has Abstractpub_date
2020-10-19 00:00:00pages
17700issue
1issn
2045-2322pii
10.1038/s41598-020-74789-0journal_volume
10pub_type
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