Viral footprints across Gulfs of Kathiawar Peninsula and Arabian Sea: Unraveled from pelagic sediment metagenomic data
2021
Nathani, Neelam M. | Vatsa, Priyanka P. | Mahajan, Mayur S. | Solomon, Solly | Mootapally, Chandrashekar
Marine biosphere is one of the largest, diverse and dynamic system hosting numerous of microorganisms. Viruses being the most abundant under explored lifeforms in ocean, represent a reservoir of great genetic diversity. We report the metagenomic insights on the viral communities in the deep sediments of the two Gulfs of Gujarat i.e. Gulf of Khambhat and Gulf of Kutch, with one sample from Arabian Sea, treated as open sea control. The viral reads were filtered from the whole dataset, assembled and studied for viral diversity, which was visualized by Pavian. The sequences were checked for the viral abundance, diversity and functionality. The resulting viral taxonomic classification contained 6 orders, 8 families and 47 genera. The results revealed that the phages infecting Cyanobacterium, Bacillus and Vibrio dominated the sediments. Further, it was observed that majority of viral sequences belonged to double-stranded DNA phages. The present study attempts to provide a primary insight of the viral signals and potential genetic content in the Gulfs of Kathiawar.
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