Acta Scientific Microbiology (ASMI) (ISSN: 2581-3226)

Research Article Volume 3 Issue 3

Metagenomic Study of the Taxonomic Profile of Rhizobacterial Communities in Soils Contaminated with Mercury

Marina Robas Mora1*, Agustín Probanza2 and Pedro Antonio Jiménez Gómez1

1Microbiology Area, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo CEU, Boadilla Del Monte, Madrid, Spain
2Plant Physiology Area, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo CEU, Boadilla Del Monte, Madrid, Spain

*Corresponding Author: Marina Robas Mora, Microbiology Area, Pharmaceutical and Health Sciences Department, Faculty of Pharmacy, Universidad San Pablo CEU, Boadilla Del Monte, Madrid, Spain.

Received: January 18, 2020; Published: February 19, 2020

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Abstract

  Soil is a complex ecosystem whose homeostasis is affected by the presence of contaminants such as mercury. Knowing the effects of this heavy metal on edaphic microbial communities can help to establish soil quality bioindicators. For the present study, rhizospheric soils have been selected from three indigenous plants of the Almadén mining district (Spain): R. induratus (A), R. bucephalophorus (B) and Avena sativa (C), as well as bulk soil samples in plots subject to different mercury concentrations. Rhizospheres contain a huge heterogeneity of scarce microorganisms that are difficult to identify, whose functional and regulator role in their communities, is unknown. Metagenomic techniques allow to know the structure, diversity and abundance of microorganisms that make up these communities, as well as the effects that contaminants may have on their bacterial members, and the natural role played by the native plants that harbor them. The results on how mercury and the plant effect affect the taxonomic composition and microbial diversity, show a reduction in soil heterogeneity in the presence of mercury, and a partial shield of this effect by Avena sativa (C) in soils with high mercury concentration. This finding opens expectations to the selection of PGPR strains for future phytoremediation trials.

Keywords: Metagenomics, soil microbiome, BBH, LCA, Shannon index (H´), Simpson index (DSi).

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Citation

Citation: Marina Robas Mora., et al. “Metagenomic Study of the Taxonomic Profile of Rhizobacterial Communities in Soils Contaminated with Mercury". Acta Scientific Microbiology 3.3 (2020): 01-13.



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