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Enhancement of phenolic acids accumulation in Salvia abrotanoides (Kar.) Sytsma shoot cultures under elicitation with nitric oxide

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Abstract

Salvia abrotanoides (Kar.) Sytsma is a medicinal plant that contains phenolic acids, especially rosmarinic acid (RA), with a wide variety of health benefits. In this research, the stimulatory effects of sodium nitroprusside (SNP), a donor of nitric oxide (NO), were examined on phenolic acids accumulation in the shoot cultures of the species after different times of exposure. The developed shoots on single-nodal explants in Murashige and Skoog solid medium supplemented with 0.5 mg L−1 kinetin and 0.05 mg L−1 indole-3-acetic acid were treated with SNP at concentrations of 25, 50 and 100 µM. The highest content of RA (10.45 ± 0.40 mg g−1 DW) was measured 144 h after elicitation of the shoots with 100 µM SNP. The maximum values of salvianolic acid A (Sal-A) (0.065 ± 0.00 mg g−1 DW) and salvianolic acid B (Sal-B) (0.42 ± 0.01 mg g−1 DW) were obtained in the shoots after 96 and 144 h exposure to 50 and 25 μM SNP, respectively. Also, elicitation with SNP at different concentrations significantly upregulated the crucial genes (PALTATRAS and CYP98A14) involved in phenolic acids biosynthesis in the shoots with distinct patterns, although no strong correlations were observed between transcription levels of the genes and phenolic acids accumulation. The findings of this study provide beneficial information about the impact of NO as an effective elicitor, which could be valuable for the in vitro improvement of phenolic acids production in S. abrotanoides.

Key Message

The results demonstrated that the elicitation with nitric oxide upregulated critical genes in the biosynthetic pathways and led to phenolic acids accumulation in the shoots of Salvia abrotanoides (Kar.) Sytsma.

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Abbreviations

KIN:

Kinetin

IAA:

Indole-3-acetic acid

FSI:

Frequency of shoot initiation

MSN:

Mean shoot number

MSL:

Mean shoot length

NO:

Nitric oxide

SNP:

Sodium nitroprusside

TPC:

Total phenolic content

TFC:

Total flavonoid content

RA:

Rosmarinic acid

Sal-A:

Salvianolic acid A

Sal-B:

Salvianolic acid B

PAL:

Phenylalanine ammonia-lyase

TAT:

Tyrosine aminotransferase

RAS:

Rosmarinic acid synthase

CYP98A14:

Cytochrome P450-dependent monooxygenase

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Acknowledgements

This work was supported by a research grant funded by Shahed University of Tehran for the plant physiology PhD thesis.

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Contributor 1 (FR) and Contributor 2 (TR) conceived this research and designed experiments; Contributor 1 (FR) performed experiments and analyses; Contributor 1 and Contributor 2 wrote the paper and Contributor 3 (PA) participated in the revisions of it. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Tayebeh Radjabian.

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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.

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This article does not contain any studies with human participants or animals performed by any of the authors. Any ethical rights have been observed in writing this article, and the scientific contribution of all individuals in this research has been fully clarified and agreed upon by all.

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Communicated by Patricia Marconi.

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Rostami, F., Radjabian, T. & Abrishamchi, P. Enhancement of phenolic acids accumulation in Salvia abrotanoides (Kar.) Sytsma shoot cultures under elicitation with nitric oxide. Plant Cell Tiss Organ Cult 149, 441–453 (2022). https://doi.org/10.1007/s11240-022-02252-1

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  • DOI: https://doi.org/10.1007/s11240-022-02252-1

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