Bacterial biodiversity from anthropogenic extreme environments: a hyper-alkaline and hyper-saline industrial residue contaminated by chromium and iron

Applied Microbiology and Biotechnology
Elcia Margareth S BritoMarisol Goñi-Urriza

Abstract

Anthropogenic extreme environments are among the most interesting sites for the bioprospection of extremophiles since the selection pressures may favor the presence of microorganisms of great interest for taxonomical and astrobiological research as well as for bioremediation technologies and industrial applications. In this work, T-RFLP and 16S rRNA gene library analyses were carried out to describe the autochthonous bacterial populations from an industrial waste characterized as hyper-alkaline (pH between 9 and 14), hyper-saline (around 100 PSU) and highly contaminated with metals, mainly chromium (from 5 to 18 g kg(-1)) and iron (from 2 to 108 g kg(-1)). Due to matrix interference with DNA extraction, a protocol optimization step was required in order to carry out molecular analyses. The most abundant populations, as evaluated by both T-RFLP and 16S rRNA gene library analyses, were affiliated to Bacillus and Lysobacter genera. Lysobacter related sequences were present in the three samples: solid residue and lixiviate sediments from both dry and wet seasons. Sequences related to Thiobacillus were also found; although strains affiliated to this genus are known to have tolerance to metals, they have not previously been detected ...Continue Reading

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Citations

Jan 22, 2014·Extremophiles : Life Under Extreme Conditions·Elcia M S BritoRémy Guyoneaud
Aug 16, 2016·Environmental Science and Pollution Research International·Paloma LaraKaty Juárez
Oct 19, 2016·Environmental Science & Technology·Talitha C SantiniLesley A Warren
May 17, 2015·Applied and Environmental Microbiology·Talitha C SantiniKathryn E Kendra
Apr 25, 2020·International Journal of Environmental Research and Public Health·Siyuan ZhangHongwei Liu
Jun 6, 2019·Frontiers in Microbiology·Germán G SgroChuck S Farah
Feb 4, 2019·Extremophiles : Life Under Extreme Conditions·Elcia Margareth Souza BritoMarisol Goñi-Urriza
Nov 28, 2018·The Science of the Total Environment·Agnieszka KalwasińskaMaciej Walczak
Mar 2, 2021·Environmental Science & Technology·Talitha C SantiniMaija J Raudsepp
May 23, 2021·Environmental Science and Pollution Research International·Muhammad Qasim ButtShumaila Naz

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