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Establishing Fungal Entomopathogens as Endophytes: Towards Endophytic Biological Control
Published on: April 11, 2013
Withanolide production by fungal endophyte isolated from Withania somnifera
Muthukrishnan Sathiyabama1, Ramalingam Parthasarathy1
1a Department of Botany , Bharathidasan University , Tiruchirappalli , India.
Abstract:
Withanolides, the secondary metabolite from Withania species is used in Ayurvedic medicine and now proved to have potential use in treating cardiovascular, Alzheimer's disease, etc. Its production in plants varies between genotypes with very low yield. For improved industrial commercialisation, there is a need to increase its production. Endophytic fungi are symbiotically associated with plants and can synthesise the same bioactive compounds and natural products as their host plant. There are no reports available on withanolide-producing (endophytic) fungi. The present study identified an endophytic fungus (Taleromyces pinophilus) from leaves of Withania somnifera which produces withanolides in the medium. The structure of withanolide was confirmed by 1H NMR, LC-MS analyses and quantified by HPLC analysis. The fungus produces high amount of withanolide when compared to leaf and root of W. somnifera. The fungus can be exploited to produce the withanolide to meet its demand.
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