Summary
Artemisia annua L. is the source of a potent antimalarial, artemisinin. As part of a program to produce artemisinin through tissue culture, a series of 14 multifactorial experiments were conducted to determine suitable conditions for initiating and maintaining friable callus fromA. annua. In the first six experiments, three different nutrient formulations [Gamborg B5 (B5), Murashige and Skoog (MS), and Whetmore and Rier (WR)], each with 32 combinations of auxins and cytokinins [2,4-dichlorophenoxyacetic acid (2,4-D) with benzyladenine (BA), or 1-naphthaleneacetic acid (NAA) with 6-furfurylaminopurine (kinetin)], were tested. Both B5 and WR nutrients supported friable callus formation from leaf explants with some combinations of auxin and cytokinin. Inasmuch as friable callus seemed to be produced over a wider range of auxin and cytokinin concentrations in combination with B5, the remaining experiments were conducted solely with this nutrient formulation. In the remaining eight experiments, it was determined that friable callus formed when combinations of NAA with kinetin or 2,4-D and BA were used with B5 medium. Lighter colored, more friable callus formed in response to 2,4-D and BA than with NAA and kinetin. No single combination of concentrations of auxin and cytokinin seemed to be “ideal” for producing friable callus. Ranges of 2,4-D from 0.5 to 2.0 with BA between 0.025 and 0.1, or NAA between 0.5 and 2.0 with kinetin between 0.5 and 1.0 mg/liter, produced acceptable results.
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Basile, D.V., Akhtari, N., Durand, Y. et al. Toward the production of artemisinin through tissue culture: Determining nutrient-hormone combinations suitable for cell suspension cultures. In Vitro Cell Dev Biol - Plant 29, 143–147 (1993). https://doi.org/10.1007/BF02632286
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DOI: https://doi.org/10.1007/BF02632286