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Liquid Culture Systems for in vitro Plant Propagation

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Chapter 43<br />

Production of taxanes <strong>in</strong> callus and suspension cultures of<br />

Taxus baccata L.<br />

K.Bru�áková, Z. Bab<strong>in</strong>cová & E.�ellárová<br />

Institute of Biology and Ecology, Faculty of Science, P. J. Šafárik University, Mánesova 23,<br />

041 54 Košice, Slovakia. E-mail: brunakov@kosice.upjs.sk<br />

Abstract: The selection and clon<strong>in</strong>g of cell l<strong>in</strong>es <strong>for</strong> the establishment of long-term cell<br />

cultures of Taxus baccata L. is important <strong>for</strong> the prospective biotechnological production of<br />

taxanes. Callus cultures were established from young stems of adult trees and aseptically<br />

grown seedl<strong>in</strong>gs. All parts of young seedl<strong>in</strong>gs were more suitable <strong>for</strong> cell proliferation on<br />

callus-<strong>in</strong>duction media as compared to young stems of adult trees. The best grow<strong>in</strong>g calli<br />

successfully achieved an average 8-fold <strong>in</strong>crease <strong>in</strong> fresh weight after 20 months of culture.<br />

The growth characteristics of two seedl<strong>in</strong>g-derived cell l<strong>in</strong>es were determ<strong>in</strong>ed. The best<br />

grow<strong>in</strong>g calli were used <strong>for</strong> establishment of suspension cultures. Gamborg’s B5 medium<br />

supplemented with 3 mg l -1 2,4-dichlorophenoxyacetic acid, 0.5 mg l -1 k<strong>in</strong>et<strong>in</strong> and 1.5%<br />

polyv<strong>in</strong>ylpyrrolidone, a phenolic-b<strong>in</strong>d<strong>in</strong>g agent, was used as agar-solidified and liquid<br />

medium. A 20-month-old callus culture of T. baccata (VI/Ha) produced paclitaxel up to<br />

0.0109 ± 0.0037 % of extracted dry weight basis. The content of taxanes was determ<strong>in</strong>ed by<br />

high per<strong>for</strong>mance liquid chromatography or a competitive <strong>in</strong>hibition enzyme immunoassay<br />

system (CIEIA). A k<strong>in</strong>etic study of callus growth and taxane production was per<strong>for</strong>med.<br />

Key words: Cell culture, k<strong>in</strong>etics study, taxane, paclitaxel, yew<br />

Abbreviations: E.D.W. – extracted dry weight; V/Kle – callus culture derived from<br />

cotyledon of an embryo-derived seedl<strong>in</strong>g (genotype V); VI/Ha – callus culture derived <strong>for</strong>m<br />

hypocotyl of an embryo-derived seedl<strong>in</strong>g (genotype VI); GI – growth rate; PVP -<br />

polyv<strong>in</strong>ylpyrrolidone<br />

1. Introduction<br />

<strong>Plant</strong> cell culture is an alternative method <strong>for</strong> commercial propagation as<br />

well as production of secondary metabolites <strong>in</strong> <strong>vitro</strong> (George and<br />

Sherr<strong>in</strong>gton, 1984; Barz and Ellis, 1981). Paclitaxel (TAXOL ® ; Bristol-Myers<br />

Squibb Co.) (Figure 1) and docetaxel (TAXOTERE ® ; Rhône-Poulenc Rorer<br />

567<br />

A.K. Hvoslef-Eide and W. Preil (eds.), <strong>Liquid</strong> <strong>Culture</strong> <strong>Systems</strong> <strong>for</strong> <strong>in</strong> <strong>vitro</strong> <strong>Plant</strong> <strong>Propagation</strong>, 567–574.<br />

© 2005 Spr<strong>in</strong>ger. Pr<strong>in</strong>ted <strong>in</strong> the Netherlands.

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