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Streptomyces diastaticus isolated from the marine crustacean Portunus sanguinolentus with potential antibiofilm activity against Candida albicans

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Abstract

Biofilm-mediated multidrug resistance has turned into major challenge for the treatment of C. albicans infections. In the present study, actinomycetes (SS5) isolated from marine crustacean were investigated for their ability to inhibit C. albicans biofilm formation. Cultural, morphological and 16S rRNA analysis revealed that the isolated strain was Streptomyces diastaticus. Ethyl acetate bioactive fractions (6 µg mL−1) from SS5 showed potent antibiofilm activity against C. albicans. Light microscopic and CLSM analysis further substantiated the antibiofilm activity of the bioactive fraction against C. albicans. The bioactive fraction was subjected to FTIR and GC–MS for characterization. From GC–MS analysis, the presence of 31 compounds were revealed, among which the alkanes are predominantly present. Hence, further investigation for the potential of these bioactive compounds against C. albicans biofilm will help in the identification of promising candidate for the prevention of biofilm-mediated infection.

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Acknowledgements

The authors sincerely thank Dr. Marina Zemser, Professor, Institute of Standards, Medical Laboratory, Ministry of Health, Israel and Dr. N. Suganthy, Department of Nanoscience and Technology, Alagappa University for reviewing and vetting the manuscript for English language.

Funding

The authors acknowledge DST–SERB for supporting this work through a grant to RMBS (File No. SR YSS/2014/000127). RMBS also acknowledge RUSA 2.O [F. 24–51/2014-U, Policy (TN Multi-Gen), Dept of Edn, GOI].

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Correspondence to Beema Shafreen Rajamohamed.

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Communicated by Erko Stackebrandt.

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Siddharthan, S., Rajamohamed, B.S. & Gopal, V. Streptomyces diastaticus isolated from the marine crustacean Portunus sanguinolentus with potential antibiofilm activity against Candida albicans. Arch Microbiol 202, 1977–1984 (2020). https://doi.org/10.1007/s00203-020-01918-8

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  • DOI: https://doi.org/10.1007/s00203-020-01918-8

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