Journal
BIORESOURCE TECHNOLOGY
Volume 188, Issue -, Pages 251-257Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.12.106
Keywords
Fusarium solani; Camptothecin; Ethanol; Elicitor; Carbon/energy source
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Ethanolic extract of a non-camptothecin producing plant, Catharanthus roseus when added in the suspension culture of the endophyte Fusarium solani known to produce camptothecin, resulted in enhanced production of camptothecin by 10.6-fold in comparison to that in control (2.8 mu g/L). Interestingly, addition of pure ethanol (up to 5% v/v) in the suspension culture of F. solani resulted in maximum enhancement in camptothecin production (up to 15.5-fold) from that obtained in control. In the presence of ethanol, a reduced glucose uptake (by similar to 40%) and simultaneous ethanol consumption (up to 9.43 g/L) was observed during the cultivation period (14 days). Also, the total NAD level and the protein content in the biomass increased by 3.7- and 1.9-fold, respectively, in comparison to that in control. The study indicates a dual role of ethanol, presumably as an elicitor and also as a carbon/energy source, leading to enhanced biomass and camptothecin production. (C) 2015 Elsevier Ltd. All rights reserved.
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