Skip to main content
Log in

Glucoindole alkaloid accumulation induced by yeast extract in Uncaria tomentosa root cultures is involved in defense response

  • Original Research Paper
  • Published:
Biotechnology Letters Aims and scope Submit manuscript

Abstract

Objective

To evaluate the induction of monoterpenoid indole alkaloids (MIA) and phenolic compound production by yeast extract (YE) and its relationship with defense responses in Uncaria tomentosa (Rubiaceae) root cultures.

Results

Root cultures were elicited by YE at three concentrations. The 0.5 mg YE ml−1 treatment did not affect cell viability but increased the hydrogen peroxide concentration by 5.7 times; guaiacol peroxidase activity by twofold; and the glucoindole alkaloid 3α-dihydrocadambine (DHC) content by 2.6 times (to 825.3 ± 27.3 μg g−1). This treatment did not affect the contents of monoterpenoid oxindole alkaloids or chlorogenic acids. In response to 0.5 mg YE ml−1 treatment, the transcript levels of MIA biosynthetic genes, TDC and LAMT, increased 5.4 and 1.9-fold, respectively, that of SGD decreased by 32%, and that of STR did not change. The transcript levels of genes related to phenolic compounds, PAL, CHS and HQT, increased by 1.7, 7.7, and 1.2-fold, respectively. Notably, the transcript levels of Prx1 and Prx encoding class III peroxidases increased by 1.4 and 2.5-fold.

Conclusion

The YE elicitor induced an antioxidant defense response, increased the transcript levels of genes encoding enzymes related to strictosidine biosynthesis precursors and class III peroxidases, and decreased the transcript level of SGD. Thus, YE could stimulate antifungal DHC production in root cultures of U. tomentosa.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

Download references

Acknowledgements

This work was supported by CONACYT (National Council for Science and Technology, Mexico, Grant No. 222097, doctoral fellowship 423774 to L.J.C.H., and postdoctoral fellowship to E.B.S.G.) and SIP-IPN (National Polytechnic Institute, Grant No. 20181377). The authors thank V. Medina-Pérez for assistance with chromatographic analysis and C. Fontaine for technical support. L.J.C.H. acknowledge to Unitrópico for allowing its academic leave.

Supporting information

Supplementary Fig. 1—Viability of Uncaria tomentosa roots after 96 h of elicitation with yeast extract at different concentrations.

Supplementary Fig. 2—HPLC chromatogram λ = 244 nm for the alkaloids present in Uncaria tomentosa root culture, after 96 h of elicitation with yeast extract (0.5 mg ml−1).

Supplementary Fig. 3—HPLC chromatogram λ = 325 nm for phenolic compounds present in Uncaria tomentosa root culture, after 96 h of elicitation with yeast extract (0.5 mg ml−1).

Supplementary Figs. 4–12—Sequences selected for primer design of biosynthetic genes.

Supplementary Table 1—Primers used in RT-qPCR.

Author information

Authors and Affiliations

Authors

Corresponding authors

Correspondence to Gabriela Trejo-Tapia or Ana C. Ramos-Valdivia.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (PDF 221 kb)

Supplementary material 2 (PDF 384 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Correa-Higuera, L.J., Sepúlveda-García, E.B., Ponce-Noyola, T. et al. Glucoindole alkaloid accumulation induced by yeast extract in Uncaria tomentosa root cultures is involved in defense response. Biotechnol Lett 41, 1233–1244 (2019). https://doi.org/10.1007/s10529-019-02714-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10529-019-02714-1

Keywords

Navigation