• Sampath Kumar G
• Tuhin Ghosh
• T.N.R. Srinivas

The enzymatic hydrolysis of polymeric compounds by microorganisms is generally accepted as the first limiting step in the transformation of organic matter in many aquatic ecosystems. Microbial extracellular enzymes are easy to visualize as high-precision tools, particularly suited to hydrolyze specific structures, the signals to which specific organisms respond to produce an enzyme, the structural specificities of these enzymes, and the ways in which they function in marine environments are mostly matters of speculation. Community-level strategies which organism makes extracellular enzymes, which benefits from hydrolysis of products, the extent to which different organisms collaborate or compete for substrates are also important but unknown questions. The nature and specific structure of the substrates accessed by extracellular enzyme–producing heterotrophs in seawater and sediments are also not known in sufficient structural detail at present. the metabolism of marine microorganisms maintains the major biogeochemical cycles on Earth, including the significant production of oxygen required for aerobic life and the biological removal of carbon Phosphate is taken up and incorporated in the cell and is released as dissolved organic phosphorus (DOP). Alkaline phosphatases cleave the DOP. Seawater contains a large amount of sulphate which can be assimilated by micro- organisms and serves as the source of sulphur. Other organisms depend on organic sulphur, mainly in the form of protein. Some algae produce DMSP (dimethyl sulfoniopropionate) which, when liberated, can be transformed by some bacteria and other algae to DMS (dimethylsulphide).

Marine microbial enzymes; Ecology; Dissolved organic matter; Heterotrophic bacteria.

"Ecological perspective of marine microbial enzymes", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.210-230, March-2019, Available :http://www.jetir.org/papers/JETIR1903931.pdf

"Ecological perspective of marine microbial enzymes", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp210-230, March-2019, Available at : http://www.jetir.org/papers/JETIR1903931.pdf