Current Microbiology

, Volume 62, Issue 3, pp 974–980 | Cite as

Cross-Species Induction of Antimicrobial Compounds, Biosurfactants and Quorum-Sensing Inhibitors in Tropical Marine Epibiotic Bacteria by Pathogens and Biofouling Microorganisms

  • Devendra H. Dusane
  • Pratiek Matkar
  • Valayam P. Venugopalan
  • Ameeta Ravi Kumar
  • Smita S. Zinjarde
Article

Abstract

Enhancement or induction of antimicrobial, biosurfactant, and quorum-sensing inhibition property in marine bacteria due to cross-species and cross-genera interactions was investigated. Four marine epibiotic bacteria (Bacillus sp. S3, B. pumilus S8, B. licheniformis D1, and Serratia marcescens V1) displaying antimicrobial activity against pathogenic or biofouling fungi (Candida albicans CA and Yarrowia lipolytica YL), and bacteria (Pseudomonas aeruginosa PA and Bacillus pumilus BP) were chosen for this study. The marine epibiotic bacteria when co-cultivated with the aforementioned fungi or bacteria showed induction or enhancement in antimicrobial activity, biosurfactant production, and quorum-sensing inhibition. Antifungal activity against Y. lipolytica YL was induced by co-cultivation of the pathogens or biofouling strains with the marine Bacillus sp. S3, B. pumilus S8, or B. licheniformis D1. Antibacterial activity against Ps. aeruginosa PA or B. pumilus BP was enhanced in most of the marine isolates after co-cultivation. Biosurfactant activity was significantly increased when cells of B. pumilus BP were co-cultivated with S. marcescens V1, B. pumilus S8, or B. licheniformis D1. Pigment reduction in the quorum-sensing inhibition indicator strain Chromobacterium violaceum 12472 was evident when the marine strain of Bacillus sp. S3 was grown in the presence of the inducer strain Ps. aeruginosa PA, suggesting quorum-sensing inhibition. The study has important ecological and biotechnological implications in terms of microbial competition in natural environments and enhancement of secondary metabolite production.

Notes

Acknowledgments

The authors would like to thank Professor R. J. C. McLean for providing the quorum-sensing indicator strain. D. H. Dusane is a recipient of Bhabha Atomic Research Centre and University of Pune (BARC-UoP) senior research fellowship.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Devendra H. Dusane
    • 1
  • Pratiek Matkar
    • 1
  • Valayam P. Venugopalan
    • 2
  • Ameeta Ravi Kumar
    • 1
  • Smita S. Zinjarde
    • 1
  1. 1.Institute of Bioinformatics and BiotechnologyUniversity of PunePuneIndia
  2. 2.Biofouling and Biofilm Processes Section, Water and Steam Chemistry DivisionBARC FacilitiesKalpakkamIndia

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