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Molecular identification and phytochemical screening of endophytic fungi isolated from Lithospermum officinale L. roots: A new source of shikonin.

08:00 EDT 9th September 2019 | BioPortfolio

Summary of "Molecular identification and phytochemical screening of endophytic fungi isolated from Lithospermum officinale L. roots: A new source of shikonin."

Endophytic fungi are microorganisms located in the inter- or intracellular compartments of plant tissues but with no harmful effects. They are considered a potential source of biological compounds. The present study was conducted to investigate the molecular identification of endophytic fungi isolated from the roots of Lithospermum officinale and their potential production of shikonin. Phylogenetic analysis was performed based on the Internal Transcribed Spacer (ITS) region and the isolates were classified into five genera as follows: Alternaria, Chaetosphaeronema, Fusarium, Mucor, and Trichoderma. The study on the methanol extracts of endophytic fungi indicated that total polyphenol content had a positive relationship with antioxidant activities and the highest antioxidant activity belonged to the methanol extracts of Fusarium tricinctum and Alternaria altenata. Then, to investigate the ability of the fungal isolates to produce shikonin, a naphthoquinone compound with high biological activity, the extracts were subjected to HPLC. The results obtained from HPLC-mass spectrometry showed that shikonin could be produced only by F. tricinctum. Thus, F. tricinctum isolated from the roots of L. officinale can be presented as a new source of shikonin.

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This article was published in the following journal.

Name: Phytochemistry
ISSN: 1873-3700
Pages: 112116

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