Adaptation of soil microbial community structure and function to chronic metal contamination at an abandoned Pb-Zn mine

FEMS Microbiology Ecology
Lur EpeldeC Garbisu

Abstract

Toxicity of metals released from mine tailings may cause severe damage to ecosystems. A diversity of microorganisms, however, have successfully adapted to such sites. In this study, our objective was to advance the understanding of the indigenous microbial communities of mining-impacted soils. To this end, a metatranscriptomic approach was used to study a heavily metal-contaminated site along a metal concentration gradient (up to 3220 000 and 97 000 mg kg(-1) of Cd, Pb and Zn, respectively) resulting from previous mining. Metal concentration, soil pH and amount of clay were the most important factors determining the structure of soil microbial communities. Interestingly, evenness of the microbial communities, but not its richness, increased with contamination level. Taxa with high metabolic plasticity like Ktedonobacteria and Chloroflexi were found with higher relative abundance in more contaminated samples. However, several taxa belonging to the phyla Actinobacteria and Acidobacteria followed opposite trends in relation to metal pollution. Besides, functional transcripts related to transposition or transfer of genetic material and membrane transport, potentially involved in metal resistance mechanisms, had a higher expression ...Continue Reading

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Citations

Apr 25, 2015·FEMS Microbiology Ecology·Laura SanguinoCatherine Larose
Dec 23, 2016·Scientific Reports·Michal ChomaTim Urich
Sep 25, 2017·Journal of Basic Microbiology·Xiaoning CaoZhijun Qiao
Jun 20, 2018·Applied and Environmental Microbiology·Carla E RosenfeldCara M Santelli
Nov 18, 2018·The ISME Journal·Kristin M RathJohannes Rousk
Jul 25, 2018·Archives of Microbiology·Chris Maltman, Vladimir Yurkov
Aug 24, 2018·FEMS Microbiology Ecology·Katharina KujalaMarja Tiirola
Nov 6, 2018·Journal of Hazardous Materials·María T Gómez-SagastiCarlos Garbisu
Nov 27, 2019·Microorganisms·Chris Maltman, Vladimir Yurkov
Mar 23, 2021·The ISME Journal·Sebastian PettersTim Urich
May 27, 2021·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Prinpida SonthiphandEkawan Luepromchai
Dec 23, 2019·Critical Reviews in Environmental Science and Technology·S Elizabeth George, Yongshan Wan
Oct 8, 2021·Environmental Science & Technology·Haochun ZhaoJianming Xu

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