Abstract
Centella asiatica has been extensively studied but there has been no report to date that relates gene expression and centelloside production in non-differentiated tissues. We have determined the content of the four principal triterpenoid bioactive compounds of C. asiatica (asiaticoside, madecassoside, asiatic acid and madecassic acid) in calli grown in different media and checked the expression level of some of the genes in the centelloside biosynthetic pathway. The results when compared with data from in vitro plant cultures showed a significantly lower expression of the gene encoding β-amyrin synthase in calli, which is consistent with the observed lower production of centellosides (less than 900 μg/g DW), while in the plants the production was around 1.5–2 mg/g DW. Moreover, we find an efficient housekeeping gene for this plant. The biosynthesis of phytosterols is also discussed.
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Abbreviations
- 4PU-30 :
-
N-(2-chloro-4-pyridyl)-N′-phenylurea
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Acknowledgements
We thank Dr Ruxian Ding from the School of Pharmacy, Second Military Medical University (Shangai, China) for the C. asiatica seeds, and the Technical Science Service from Barcelona University for their support. This research has been supported by grants from the Spanish MEC (BIO2002-03614; BIO2002-02328; BIO2005-05583). L. Osuna is grateful for her research grant (PIV) from the “Generalitat de Catalunya”.
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Mangas, S., Moyano, E., Osuna, L. et al. Triterpenoid saponin content and the expression level of some related genes in calli of Centella asiatica . Biotechnol Lett 30, 1853–1859 (2008). https://doi.org/10.1007/s10529-008-9766-6
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DOI: https://doi.org/10.1007/s10529-008-9766-6