RESUMO
It was shown earlier, that ginseng embryogenic cell culture 2c3 was obtained as a result of callus cells transformation with the Agrobacterium rhizogenes rolC oncogene. In the present report we determine that inhibitors of Ca2+-channels (LaCl3, verapamil, niflumic acid) certainly lowered the quantity of somatic embryos in the 2c3 cell culture. This is the evidence of the influence of calcium-dependent signal system on plant embryogenesis. Protein kinases inhibitors W7 and H7 also caused the lowering of somatic embryos quantity in the 2c3 cell culture. We analysed changes of CDPK genes expression in embryogenic 2c3 cell culture. Total expression decreased 1.2-1.5 times comparing with the control callus culture. CDPK expression in the 2c3 embryogenic culture lowered by the inhibition of expression of the gene subfamilies PgCDPK1 (PgCDPK1a and PgCDPK1b) and PgCDPK3 (PgCDPK3a). At the same time, expression of PgCDPK2 gene subfamily (PgCDPK2b and PgCDPK2d) was increased. We suppose that genes of PgCDPK2 subfamily might be responsible for the embryogenesis initiation in the 2c3 ginseng cell culture. It was shown for the first time that the rolC gene and the process of embryogenesis could change expression of particular forms of CDPK genes.
