In vitro production of flavonoids in cultures of Gypsophila glomerata.

Effects of increased concentration of calcium chloride on growth and production of flavonoids in newly established shoot and callus Gypsophila glomerata cultures were studied. The highest impact of CaCl₂ on the growth index was determined in callus cultures (GI = 0.92), while in shoot cultures calcium treatment reduced the amount of biomass (GI = 0.38). Total flavonoids in shoot cultures grown on MS medium and MS medium supplemented with double amount of CaCl₂ were 0.36 mg/g d. w. In both callus cultures, 2 mg/g d. w. total flavonoids were quantified. Shoots and callus grown on non-modified media accumulated 0.02 mg/g d. w. quercetin derivatives. Unlike these, both shoots and callus grown on calcium-enriched media accumulated 0.03 and 0.05 mg/g d. w. of isorhamnetin derivatives. In vitro shoot cultures grown on MS medium enriched in twice the amount of CaCl₂ accumulated the highest amount of saponarin (0.138 mg/mg d. w.). [ABSTRACT FROM AUTHOR]