1. Centre for Cellular and Molecular Biology, (CSIR), Hyderabad 500 007, India
2. Molecular Microbiology Laboratory, Department of Biotechnology, University of North Bengal, Siliguri, West Bengal 734 430, India
3. Experimental Limnology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Alte Fischerhuette 2, 16775 Stechlin, Germany
4. Institute of Biochemistry and Biology, Potsdam University, Am Neuen Palais 10, 14469 Potsdam, Germany