Metabarcoding of PalEnDNA as An Efficient Tool to Recover Ancient Bacterial Diversity
2018
Thomas, Shan P. | Shanmuganathan, Bhavatharini | Krishnan, Sivakumar | Goswami, Kartika | Dev, Maha | Jaiswal, Manoj Kumar | Kumaresan, Anbarasu | Sadasivam, Senthil Kumar
Past bacterial diversity of a paleosol was reconstructed using metabarcoding of paleo environmental DNA (PalEnDNA). The paleosol was subsampled from a sediment core which was excavated from a palaeo beach-ridge located 2.6 km away from present sea shore and identified that it was deposited under marine influence ∼6000 years ago, using geological proxies. The bacterial community contained 37 bacterial phyla and dominated by Proteobacteria, followed by Bacteroidetes, Firmicutes, Actinobacteria, Verrucomicrobia, and Chloroflexi. The bacterial community was a mix-up of marine and terrestrial population, and thereby diversity was higher than marine populations. The result shows metabarcoding of PalEnDNA can effectively reconstruct past bacterial community structure.
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