Metagenomic analysis of bacterial diversity in the surface water, top soil and sediment from the Mangrove ecosystem of Panangad, India

Abstract

Mangrove ecosystem contains diverse group of microorganisms that have not been studied extensively. The present study used metagenomic approach for understanding the diversity of bacteria in a mangrove ecosystem from South India. Water, top soil and sediment samples were analyzed and the dominant Phyla were Firmicutes(75–81 %) followed by Proteobacteria(12–15 %). Oenococcusoeni(33–35 %) was the most abundant bacterial species, followed by Bacillus(18–22 %) in all the samples. But the remaining species showed variedabundanceamong the samples. Lysinibacillus halotolerance (9–17 %), Loktanella cinnabarina (11–13 %), Cohnella hongkongensis (2–7%), Parcubacteria(1–2.5 %) and Oreniasivashensis (0.7–2%). Top soil sample had the most abundance of bacteria, but sediment sample had the most species diversity. Water samplefrom Mangrove contained bacteria of more diverse evolutionary lineage, which showed significant diversity among other samples.