A COMPARATIVE STUDY ON VITAMIN B12 AND CO-CULTURE SYSTEM PROMOTES THE GROWTH OF MICROALGAE NEPHROSELMIS ASTIGMATICA

Author(s): Subasankari K, Thanappan V, Anantharaman P*

Abstract: Microalgae frequently grow in marine environment with the help of symbiotic microbes. Here our study explains in detail with the reciprocity between the microalgae Nephroselmis astigmatica and bacteria Halomaonas meridian in habitat with high saline environment. In this study Co- culture system reveals the possibility to know the bacterial metabolites and their growth promotion in algal cells. However algal cells grown in vitamin solution at various concentrations of 5μg, 7.5μg, 10μg reveals the requirement of vitamins for their growth. According to that the co – culture experiment at different incubation period of 12hr, 24hr, 48hr, and 96hr explains the effect of bacterial growth promoting compounds from late log phase. Hence results of our study show 7.5μg of cyanocobalamine and 48hr of Halomonas meridian improves the algal growth beneficially.

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