Abstract
The medicinal parts of cortical pharmaceutical plants differ because the contents of the active ingredients differ in different trunks. This study explored the influence of root trunk reverse growth simulated treatment on the induction of active ingredients in various medicinal plant trunk cortices using 15-year-old Eucommia ulmoides and Magnolia officinalis as the subjects. High-performance liquid chromatography was used to determine the effects of root trunk reverse growth simulation treatments (exposing the root and embedding the trunk with soil or black film) on E. ulmoides and M. officinalis bark medicinal contents (pinoresinol diglucoside [PDG], magnolol [MN], and honokiol [HN]). The reverse growth simulation treatments of exposed roots and embedded trunks (black film- and soil-embedded trunks) had significant reverse convergence induction effects on the contents of bark medicinal components of E. ulmoides and M. officinalis. There was an induced intercropping of “stress” accompanied by the simulated treatment. The interaction of simulated induction and “stress” leads to an increase in the content of active ingredients in different barks of E. ulmoides and M. officinalis. The root trunk reverse growth simulated treatment provides a new method for the study of the non-medicinal parts of cortex herbs.
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Acknowledgements
This work was supported by the Innovative Natural Science Foundation of Hunan Province (grant numbers 2021JJ30346), Hunan Province Traditional Chinese Medicine Industry Technology System Project (grant numbers [2022]67), Special Key Research and Development Project for the Construction of Innovative Province in Hunan Province (grant numbers 2021SK2012).
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TD and SX designed the experiment; TD, YC, ZL, XQ, MZ, and SX carried out the experiment and analyzed the date; TD drafted and revised the manuscript; TD and SX revised the manuscript. All authors have read and approved this manuscript.
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Du, T., Chen, Y., Li, Z. et al. Effects of root trunk reverse growth simulation on the contents of active ingredients in cortices of Eucommia ulmoides and Magnolia officinalis. Braz. J. Bot 46, 541–547 (2023). https://doi.org/10.1007/s40415-023-00899-4
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DOI: https://doi.org/10.1007/s40415-023-00899-4