• Vijayanand B. Warad Research scholar PRIST University, Vallam, Thanjavur 613403, Tamilnadu, India
  • Prasanna Habbu Postgraduate Department of Pharmacognosy & Phytochemistry, S E T’s College of Pharmacy, Dharwad-580 002, Karnataka, India
  • Rajesh Shastri Postgraduate Department of Pharmacognosy & Phytochemistry, S E T’s College of Pharmacy, Dharwad 580002, Karnataka, India


Objective: To screen the antimicrobial activity Of Callyspongia Diffusa (Marine Sponge) Associated Endophytic Bacterial Strains.

Methods: We have isolated endophytic bacterias CDB-1 and CDB-2 from marine sponge Callyspongia diffusa and identified as Pseudomonas taiwanensis strain and Lysinibacillussphaericus strain respectively by the phylogenetic analysis. Fractions of CDB-1 and CDB-2 were screened for in vitro and in vivo antimicrobial activities against pathogenic bacteria and mycobacterium tuberculosis H37 RV strain by Minimum Inhibitory Concentration (MIC) method.

Results: The lowest MIC against Kleibesella pnumoniae, Escherichia coli and Enterococcus feacalis was found to be 0.2 µg/ml and 0.4 µg/ml respectively for CDB-2. A significant antifungal activity was observed against Candida albicans (0.2-0.8 µg/ml) and Aspergillus niger (0.2-0.4 µg/ml). Further, Chloroform fraction of CDB-1 and ethyl acetate fraction of CDB-2 have shown significant anti-tubercular activity against the tested organism with MIC of 6.25µg/ml. This was supported by in vivo antimicrobial activity against K. Pneumonia infection in mice and least haemolytic activity against erythrocytes was observed. Compared to chloramphenicol.

Conclusion: In this study, we have reported the marine natural species offer a rich source of bioactive metabolites that can exploit to develop novel, useful and potential therapeutic agents.

Keywords: Antimicrobial, Anti-tubercular, Pseudomonas taiwanensis, Lysinibacillus sphaericus, Callyspongia diffusa, Endophytic bacteria.


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How to Cite
Warad, V. B., P. Habbu, and R. Shastri. “ANTIMICROBIAL ACTIVITY OF CALLYSPONGIA DIFFUSA (MARINE SPONGE) ASSOCIATED ENDOPHYTIC BACTERIA L STRAINS”. International Journal of Pharmacy and Pharmaceutical Sciences, Vol. 9, no. 7, July 2017, pp. 90-96, doi:10.22159/ijpps.2017v9i7.18480.
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