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. 2014 Feb 11:14:52.
doi: 10.1186/1472-6882-14-52.

Cytotoxic and antimicrobial activities of endophytic fungi isolated from Bacopa monnieri (L.) Pennell (Scrophulariaceae)

Meenu Katoch  1 , Gurpreet Singh, Sadhna Sharma, Nidhi Gupta, Payare Lal Sangwan, Ajit Kumar Saxena
Affiliations

Cytotoxic and antimicrobial activities of endophytic fungi isolated from Bacopa monnieri (L.) Pennell (Scrophulariaceae)

Meenu Katoch et al. BMC Complement Altern Med. .

Abstract

Background: Endophytes, which reside in plant tissues, have the potential to produce novel metabolites with immense benefits for health industry. Cytotoxic and antimicrobial activities of endophytic fungi isolated from Bacopa monnieri (L.) Pennell were investigated.

Methods: Endophytic fungi were isolated from the Bacopa monnieri. Extracts from liquid cultures were tested for cytotoxicity against a number of cancer cell lines using the MTT assay. Antimicrobial activity was determined using the micro dilution method.

Results: 22% of the examined extracts showed potent (IC50 of <20 μg/ml) cytotoxic activity against HCT-116 cell line. 5.5%, 11%, 11% of the extracts were found to be cytotoxic for MCF-7, PC-3, and A-549 cell lines respectively. 33% extracts displayed antimicrobial activity against at least one test organism with MIC value 10-100 μg/ml. The isolate B9_Pink showed the most potent cytotoxic activity for all the cell lines examined and maximum antimicrobial activity against the four pathogens examined which was followed by B19.

Conclusions: Results indicated the potential for production of bioactive agents from endophytes of Bacopa monnieri.

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Figures

Figure 1
Figure 1
Colony morphology and light microscopy of B9_Pink and B19 endophytic fungi associated with Bacopa monnieri A) B19 Colony, B) light microscopy of B19 C) B9_Pink Colony D) light microscopy of B9_Pink showing their characteristic spores.
Figure 2
Figure 2
Unrooted Phylogenetic Tree based on ITS-5.8S rDNA sequences of B9_Pink and B19 endophytic fungi associated with Bacopa monnieri showing their position with their close relatives.
See this image and copyright information in PMC

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