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Betalain accumulation and de novo transcriptome sequencing reveal the potential to increase bioactive compounds in Alternanthera sessilis elicited by methyl jasmonate

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Abstract

Alternanthera sessilis is a plant popularly known for its medicinal properties. Although there are many studies regarding the pharmacological activity of this species, there is little knowledge at the molecular level of the mechanisms involved in the biosynthesis and regulation of its secondary metabolites, mainly betalains. These pigments have high potential for use in industry and are produced exclusively by plants of the order Caryophyllales, to which this species belongs. The objective of the present study was to evaluate the differential expression of genes by RNA sequencing and the concentration of betalain in plants exposed to methyl jasmonate (MeJa) elicitation for 48 h. A total of 51,390,246 and 43,194,240 clean reads were obtained for the control treatment and MeJA elicited plants, respectively. Alignment of 97,117 transcripts against the AA-NCBI-NR bank using the Diamond program resulted in a total of 25,601 alignments; thus, a gene ontology (GO) annotation was published for 22,520 transcripts. Analysis of differentially expressed genes resulted in a total of 398 downregulated and 692 upregulated genes. The variable databases MapMan and KEGG, which contain metabolites, were more affected by the potential upregulation of MeJa during betalain biosynthesis. In addition, the betalain concentration (amaranthin, betanidin, betaine, and miraxanthin) increased after being elicited. These data demonstrate molecular reprogramming in response to methyl jasmonate elicitation and provides molecular data that serve as a basis for future analyses, mainly regarding the potential of this plant to produce betalamic pigments.

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All data generated or analysed during this study are included in this published article.

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  • 30 November 2022

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Acknowledgements

The authors gratefully acknowledge the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for their financial support and researcher fellowship to EJBB, the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brazil (CAPES) and the Research Foundation of Rio Grande do Sul (FAPERGS) for supporting the research.

Funding

This work was carried out under the auspices of the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brazil (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and the Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (FAPERGS).

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Correspondence to Eugenia Jacira Bolacel Braga.

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Communicated by A. Królicka.

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Supplementary file1 (DOCX 15 KB) List of primers used in RT-qPCR reactions

11738_2022_3488_MOESM2_ESM.xlsx

Supplementary file2 (XLSX 243 KB) List of differentially expressed genes identified by RNA Seq (FDR < 0.01) in Alternanthera sessilis plants subjected by the action of methyl jasmonate after 48 hours

11738_2022_3488_MOESM3_ESM.xlsx

Supplementary file3 (XLSX 82 KB) List of metabolics pathways altered by the action of methyl jasmonate after 48 hours of elicitation in Alternanthera sessilis according to Kegg

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Milech, C., do Amaral, M.N., Auler, P.A. et al. Betalain accumulation and de novo transcriptome sequencing reveal the potential to increase bioactive compounds in Alternanthera sessilis elicited by methyl jasmonate. Acta Physiol Plant 45, 15 (2023). https://doi.org/10.1007/s11738-022-03488-2

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  • DOI: https://doi.org/10.1007/s11738-022-03488-2

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