Suspension cultures of Taxus canadensis were elicited with methyl jasmonate (MJ) under defined headspace ethylene concentrations. Kinetic studies of growth, nutrient consumption, pH variation, and paclitaxel accumulation were conducted in batch cultures and semicontinuous culture with total cell recycle. A dramatic increase of paclitaxel was obtained when the cultures were elicited with 100 mic...

Mouse tumor C1300 has been established in tissue culture. The cells have a round cell morphology in both the subcutaneous tumor and in suspension culture. However, when given a surface on which to attach, they send out processes up to 3 mm in length and assume the morphology of mature neurons. The attached cells are stained by the Bodian silver procedure for neurons, whereas the cells grown in ...

Background: Flavonoids of Hypericum perforatum are important secondary metabolites which have been widely utilized in medicine for a range of purposes. The use of methyl jasmonate (MeJA) elicitation for the enhancement of flavonoid production in cell suspension culture of H. perforatum would be an efficient alternative method for the flavonoid production. Results: MeJA influenced the cells grow...

background and objectives: the seeds of securigera securidaca (l.) deg. & dorf. (fabaceae) are used as anti-diabetic remedy in iranian folk medicine. the aim of the present study was to establish the callus and suspension culture of s. securidaca seeds for the first time and to determine the major secondary metabolites including cardiac glycosides and total phenols. methods: the culture of s. s...

* Author for correspondence and reprint requests Z. Naturforsch. 64c, 418-420 (2009); received December 15, 2008 Cell suspension culture has rapidly become an alternative source of taxol, an anticancer compound. To investigate the role of DNA methylation in the cultural course of Taxus chinensis cells, analyses of 18S rRNA gene sequences of cultured T chinensis cells and related species were co...

Diagnosis of primary ciliary dyskinesia (PCD) sometimes requires repeated nasal brushing to exclude secondary ciliary alterations. Our aim was to evaluate whether the use of a new method of nasal epithelial cell culture can speed PCD diagnosis in doubtful cases and to identify which are the most informative parameters by means of a multilayer artificial neural network (ANN). A cross-sectional s...

Saffron (Crocus sativus L.) protoplasts were isolated from the cells of a suspension culture or calli with a solution of Cellulase, Pectinase and Hemicellulase and embedded in Ca-alginate beads. They were cultured with or without nurse cells in MS medium supplemented with 2,4-D and 6-benzylaminopurine at 25°C. After several changes of medium, cell-clusters appeared on the surface of the Ca-algi...

     Cell cultures of Varthemia persica, Peganum harmala and Pycnocycla spinosa have been studied to evaluate their abilities to bioconvert exogenous hydroquinone. Arbutin is an important substance that has several pharmaceutical applications; therefore, we have established V. persica and P. spinosa cultures which seem to be able to metabolize hydroquinone. C...

      The abilities of Silybum marianum cell culture to biotransform benzaldehyde to benzyl alcohol in three culture systems were compared. Callus cultures of Silybum marianum were established from seedlings, and healthy suspensions and immobilized cultures grown on the Murashige and Skoog medium. S. marianum cells were immobilized in both agar beads and fiber cotton ...