Bacterial distribution in the Equatorial Indian Ocean using Amplicon sequencing of V3-V4 rDNA hypervariable region data

Alok K Sinha; Bhaskar V Parli; N Anilkumar

doi:10.1016/j.dib.2022.108673

Bacterial distribution in the Equatorial Indian Ocean using Amplicon sequencing of V3-V4 rDNA hypervariable region data

Data Brief. 2022 Oct 14:45:108673. doi: 10.1016/j.dib.2022.108673. eCollection 2022 Dec.

Authors

Alok K Sinha^{1

2}, Bhaskar V Parli¹, N Anilkumar¹

Affiliations

¹ Ocean Science Group, National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Headland Sada, Goa,403804.
² O' Smart, Hydrothermal Vent Group, National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Headland Sada, Goa,403804.

Abstract

The Equatorial Indian Ocean (EIO) is a complex system strongly influenced by Indian Monsoon. During a RAMA (Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction) mooring maintenance expedition during the Southwest monsoon (August-September 2016) onboard ORV Sagar Kanya, seawater samples from the surface, deep chlorophyll maxima (DCM) and 200m were collected for bacterioplankton community structure. Herein we document our amplicon data of the bacterial community at 4 stations (4.01°S, 1.60°S, 0.36°N and 1.78°N) along the 67°00' E transect. The samples were subjected to next-generation sequencing (NGS), followed by processing with Mothur v 1.48.0, and the taxonomic classification prepared with Silva 138.1nr reference database. Our data indicates Alphaproteobacteria (48 %) and Cyanobacteria (33 %) dominance in the surface and DCM samples.

Keywords: Bacterial diversity; EIO; Metagenomics; RAMA.