BERGENIA CRASSIFOLIA BERGENIA CRASSIFOLIA (L.) FRITSCHIN VITRO IN VITRO

Overview

Bergenia crassifolia (L.) Fritsch in vitroSterile germinating plants were used to derive a tissue culture. The greatest stimulating effect onthe growth of the culture was exerted by NAA cultures in all concentrations tested, by IAA inconcentrations of 1.0 and 10.0 mg.l -1 , by IBA in a concentration of 0.1 mg.l -1 , and by the combinationof IBA + K. The difference between the values of growth on these media was statistically insignifi-cant. TLC analysis of callus extracts demonstrated the presence of bergenin, arbutin, hydroquinone,and methylarbutine. HPLC analysis confirmed the findings (arbutin 0.25 %, hydroquinone 0.05 %,methylarbutin 0.28 %). The results of biotransformation tests show that the highest increase inarbutin took place after addition of 4-hydroxybenzoic acid and withdrawal of the sample after 24hours (3.82 %). No transformation of arbutin or 4-methoxyphenol to produce methylarbutin tookplace in the culture under the given conditions. The highest increase in the summary content ofphenolic substances occurred with the use of the elicitor Pseudomonas aeruginosa – 88 % (conc.0.0001 g/100 ml, 12-hour action).

Key words:
tissue culture – Bergenia crassifolia – biotransformation – elicitation