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Development of suspension culture technology and hormone effects on anthocyanin biosynthesis for red Cyclocarya paliurus cells

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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.

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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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Authors and Affiliations

Authors

Contributions

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.

Corresponding author

Correspondence to Zhongping Yin.

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Conflict of interest

The authors have no relevant financial or non-financial interests to disclose.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Communicated by Patricia Marconi.

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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

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