Establishment, Culture, and Scale-up of Brugmansia candida Hairy Roots for the Production of Tropane Alkaloids
Brugmansia candida (syn. Datura candida) is a South American native plant that produces tropane alkaloids. Hyoscyamine, 6β-hydroxyhyoscyamine (anisodamine), and scopolamine are the most important ones due to their anticholinergic activity. These bioactive compounds have been historically and widely applied in medicine and their demand is continuous. Their chemical synthesis is costly and complex, and thereby, these alkaloids are industrially produced from natural producer plants. The production of these secondary metabolites by plant in vitro cultures such as hairy roots presents certain advantages over the natural source and chemical synthesis. It is well known that hairy roots produced by Agrobacterium rhizogenes infection are fast-growing cultures, genetically stable and able to grow in hormone-free media. Additionally, recent progress achieved in the scaling up of hairy root cultures makes this technology an attractive tool for industrial processes. This chapter is focused on the methods for the induction and establishment of B. candida hairy roots. In addition, the scaling up of hairy root cultures in bioreactors and tropane alkaloid analysis is discussed.
Key wordsBrugmansia candida Agrobacterium rhizogenes Hairy root cultures Stirred tank bioreactor Hyoscyamine Scopolamine 6β-hydroxyhyoscyamine
This work was supported by the Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina (CONICET), and Agencia Nacional de Promoción Científica y Tecnológica, Argentina (ANPCyT), by grants UBACyT 181, PIP 0156, and PICT 2125. A.B.C., J.R.T., and A.M.G. are researchers from CONICET.
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