| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Tusevski, Oliver
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (1/1 displayed)
Places of action
| Organizations | Location | People |
|---|
article
Fungal elicitor-mediated enhancement in phenylpropanoid and naphtodianthrone contents of Hypericum perforatum L. cell cultures
Abstract
Hypericum perforatum cell suspensions were evaluated for their growth, phenylpropanoid and naphtodianthrone productions, and antioxidant activity after treatments with fungal elicitors Fusarium oxysporum, Phoma exigua and Botrytis cinerea. Elicited cells displayed a reduced biomass production, a rapid stimulation of secondary metabolites production and a modification of cell redox state compared to control. Cells responded strongly towards the applied elicitors through the enhanced production of naphtodianthrones. Hypericin and pseudohypericin production was significantly increased (up to fourfold) in the early growth phase and remained stable all along the post-elicitation period. Significant increase in contents of total phenolics, total flavonoids and total anthocyanins was observed during the entire period of cultivation, while total flavanols were enhanced at the end of post-elicitation. The enzymatic activities of phenylalanine ammonia lyase and chalcone isomerase were remarkably elevated in elicited cells confirming a strong activation of phenylpropanoid/flavonoid pathways. The fingerprint profile of Fourier transform infrared spectroscopy spectra from the cell walls showed a little variation in lignin accumulation between elicited and control samples. With regards to the antioxidant state, an early up-regulation of peroxidase activity was observed in elicited cells, whereas non-enzymatic properties and catalase activity were enhanced at the end of post-elicitation. These findings suggest the involvement of an efficient antioxidant defense system in the adaptive response of cells to fungal elicitation. Altogether, these results indicated that H. perforatum elicited cells represent a promising experimental system for scale-up production of naphtodianthrones for medicinal uses.