Summary of Abstract Submission

Abstract Submission No. IO50-09-0062PresentationOral


Ramaiah Nagappa*1

1 CSIR-National Institute of Oceanography, India


In the global microbial oceanography scenario, advent and application of epifluorescence microscopy in the early 1970s, of adoption of molecular techniques in the 1990s, rigorous refinement of techniques, and investigations on microbial metagenomics post-2000, saw and continue to bring about paradigm shifts in our knowledge of the sea microbes. Microbiology of the Northern Indian Ocean however, began nondescriptly. Its origins -thanks mostly to the efforts of early microbiologists at the NIO- were modest and mainly by practicing traditional plate counting and biochemical scheme-dependent genera reporting of heterotrophic bacteria during 1970-1990. From mid 1980s, marine mycology sprang up and came to stay firm. This was made possible by describing many new fungal species from this region and by showcasing their role in nutrient recycling and in producing enzymes of commercial importance. The epifluorescence microscopy began way later in the 1990s. Use of some molecular techniques began around 1998. Bacterial production rates measured using labeled substrates from the seas around India during the 1990s JGOFS Program and early 2000s brought out interesting insights on bacterial role in remineralization and secondary production. Search for microbial molecules post-2000 is also promising. Molecular techniques based microbial phylogenetics beginning ~2000 has unravelled the plentitude of microbial diversity. Post-2005 scenario is microbiology of the coastal, open-ocean, coral reef, deep sea and oxygen minimum zones by adopting many advanced microscopic, flow cytometric and molecular techniques. Growth in the study of microbial transcriptomics, metabolomics and proteomics is being seen. This presentation will reminisce some main contributors and contributions.