Obtainment and Phytochemical Screening of Callus and Suspension Cell Cultures of Phlojodicarpus sibiricus (Steph. ex Spreng.) К.-Pol.

Abstract

Callus and suspension cell cultures have been obtained from aseptic seedlings of Siberian bloat fruit (Phlojodicarpus sibiricus), a producer of coumarins. P. sibiricus callus cultures were characterized by white-yellow coloration, a combination of loose and dense cell aggregates, and satisfactory growth. The dry biomass growth index for cultures of leaf, hypocotyle or root origin was 7-9, 10-12 and 11-13, respectively. Suspension cell cultures were initiated from calluses of leaf and hypocotyle origin; these cultures were also white-yellow and consisted mainly of cell aggregates of the meristem-like and parenchyma-like types with different aggregation degrees depending on the origin. Cell viability during the growth cycle was at the level of 70-80%. In contrast to the original callus cultures, the suspension culture of leaf callus origin had the highest growth characteristics (growth index of about 10). Preliminary phytochemical screening by UPLC ESI MS showed the presence of khellactone-group coumarins in the biomass of P. sibiricus primary calluses (1st-3rd growth cycle) and suspension cultures derived from them. Sibirian bloat fruit, Phlojodicarpus sibiricus, callusogenesis, suspension cell culture, coumarins The works on obtaining and growing P. sibiricus cells, as well as studying their growth characteristics were financed by the Russian Scientific Foundation grant no. 74-00097. The study of phytochemical characteristics of P. sibiricus cell cultures was supported by the state assignment of the Ministry of Education and Science of Russia (FSRG-2020-0019).