Abstract
Plant cell culture is a good way to produce anthocyanins owing to its outstanding advantages of short cycles and no limitation on natural environments. However, this method has not been widely used due to the lack of elite cell lines, low yield, and relatively high cost. In the present paper, suspension culture technology of red Cyclocarya paliurus cells was developed to produce anthocyanins, and the effects of hormones on anthocyanin biosynthesis in the cultured cells were investigated through omics. Under the optimized culture conditions and hormones combination, total anthocyanins yield reached 20.81 mg/L. A total of 23 compounds were identified and quantified in the cultured cells by targeted metabolomic analysis of anthocyanins. Hormones showed significant effects on anthocyanins accumulation, and the content of cyanidin-3-O-galactoside and cyanidin-3-O-glucoside increased 1.92 and 1.68 times than that of the control group respectively. Compared with the control group, the optimized hormone combination upregulated the expression levels of key genes in the anthocyanin biosynthesis pathway (flavonoid 3′-hydroxylase (F3′H), dihydroflavonol 4-reductase (DFR), leucocyanidin reductase (LAR), leucoanthocyanidin dioxygenase (LDOX), and anthocyanin-3-O-glucosyltransferase (3GT)) and Transcription factors (TFs) (MYB5, MYB86, ERF003, ERF024, and bZIP44), meanwhile downregulated the expression levels of pathway genes (flavonoid 3′,5′-hydroxylase (F3′5′H) and anthocyanin reductase (ANR)) and TFs (MYB4, MYC2, and bHLH137). Integrative analysis of metabolome and transcriptome indicated that the optimized hormones combination changed TFs’ expression, which further led to the expression change of anthocyanin biosynthesis pathway genes and eventually resulted in a significant increment of anthocyanins biosynthesis in the cultured cells.
Graphical abstract
Key message
Suspension culture of red Cyclocarya paliurus cells was developed to produce anthocyanins and the promotion mechanism of hormone on anthocyanin biosynthesis was interpreted by transcriptome and metabolome.
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Data availability
The datasets generated during the current study are not publicly available as Cyclocarya paliurus does not yet have publicly available genomic data, all of our subsequent studies rely on existing data but are available from the corresponding author on reasonable request.
Abbreviations
- MS:
-
Murashige and Skoog medium
- 1/2MS:
-
1/2 Murashige and Skoog medium
- B5:
-
Gamborg B5 medium
- KT:
-
Kinetin
- 2,4-D:
-
2,4-Dichlorophenoxy acetic acid
- NAA:
-
1-Naphthylacetic acid
- TDZ:
-
1-Phenyl-3-(1,2,3-thiadiazo-5-yl)urea (thidiazuron)
- IBA:
-
Indole-3-butytric acid
- HPLC:
-
High performance liquid chromatography
- UPLC:
-
Ultra performance liquid chromatography
- ESI-MS:
-
MS Electrospray ionization-mass spectrometry
- LC-MS/MS:
-
Liquid chromatograph-mass spectrometry
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Acknowledgements
This study was financially supported by National Natural Science Foundation of China (No. 31960515) and Jiangxi Provincial Natural Science Foundation (No. 20192BAB204004). We thank Wuhan MetWare Biotechnology Co., Ltd. (Wuhan, China), for their support during the metabolome and transcriptome data analysis.
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YL: Methodology, Validation, Investigation, Data curation, Writing - original draft, Writing - review & editing. QL: Data analysis. DT: Conceptualization, Methodology. YC: Investigation. JZ: Investigation. WZ: Methodology & Data analysis. JC: Conceptualization, Methodology, Supervision. QZ: Writing - review & editing. ZY: Conceptualization, Writing - review & editing, Visualization, Project administration, Funding acquisition. All the authors read and approved the final manuscript.
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Liu, Y., Liang, Q., Tang, D. et al. Development of suspension culture technology and hormone effects on anthocyanin biosynthesis for red Cyclocarya paliurus cells. Plant Cell Tiss Organ Cult 149, 175–195 (2022). https://doi.org/10.1007/s11240-021-02215-y
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DOI: https://doi.org/10.1007/s11240-021-02215-y