Elicitation of Forskolin in Suspension Cultures of Coleus forskohlii (Willd.) Briq. Using Elicitors of Fungal Origin

MS liquid medium supplemented with 3 mg/l NAA and 1 mg/l BAP with pH 5.7 was used for suspension cultures. Suspension cultures subjected to biotic elicitors Aspergillus niger, Fusarium oxysporium, Rhizopus oryzae and Penicillium notatum induced increase in forskolin content. Among all the elicitors tried Aspergillus niger proved to be best elicitor at 5% CF which was 6 times higher than the control.