Microbial diversity at remediated former gold and copper mines and the metal tolerance of indigenous microbial strains

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F25%3A00014055" target="_blank" >RIV/46747885:24620/25:00014055 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.asm.org/journal/aem" target="_blank" >https://journals.asm.org/journal/aem</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1128/aem.02555-24" target="_blank" >10.1128/aem.02555-24</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microbial diversity at remediated former gold and copper mines and the metal tolerance of indigenous microbial strains

Popis výsledku v původním jazyce

Metamorphic Devonian rocks in the northern Moravian Jeseník district (Czech Republic) contain non-vein polymetallic, copper, and gold deposits. Sulfide leaching following previous mining activities has caused significant chemical and physical alterations in the local environment, resulting in biological process shifts. Here, we present a detailed microbiological survey of the Zlaté Hory mine and its adjacent features, including tailings, sediments, and treated mine water. In addition, we isolated metal-tolerant bacteria and fungi as potential candidates for the bioremediation of mine wastewater. Microbial community analysis revealed differences driven by environmental conditions. Acidotolerant consortia, for example, Gallionella sp. and Ferrovum sp., were mainly detected in the acidic shaft outflow (pH 3.07, conductivity 1,351 μS.cm−1). Subsequent treatment and pH neutralization led to the presence of metal-tolerant heterotrophs, including fungi, despite elevated heavy metal concentrations. Notably, the highest microbial diversity was observed in drainage water with low metal content. These findings suggest that physicochemical factors, such as pH and metal/metalloid concentration, play a pivotal role in shaping environmental microbiomes and influencing community composition. Furthermore, while biogeochemical processes (e.g., Fe(II) oxidation, sulfide precipitation, metal immobilization) may already be contributing to natural mine water remediation, unfavorable equilibria in the iron cycle caused by acidification could be compensated for through bioremediation using beneficial microorganisms, such as Variovorax or Arthrobacter isolates.

Název v anglickém jazyce

Microbial diversity at remediated former gold and copper mines and the metal tolerance of indigenous microbial strains

Popis výsledku anglicky

Metamorphic Devonian rocks in the northern Moravian Jeseník district (Czech Republic) contain non-vein polymetallic, copper, and gold deposits. Sulfide leaching following previous mining activities has caused significant chemical and physical alterations in the local environment, resulting in biological process shifts. Here, we present a detailed microbiological survey of the Zlaté Hory mine and its adjacent features, including tailings, sediments, and treated mine water. In addition, we isolated metal-tolerant bacteria and fungi as potential candidates for the bioremediation of mine wastewater. Microbial community analysis revealed differences driven by environmental conditions. Acidotolerant consortia, for example, Gallionella sp. and Ferrovum sp., were mainly detected in the acidic shaft outflow (pH 3.07, conductivity 1,351 μS.cm−1). Subsequent treatment and pH neutralization led to the presence of metal-tolerant heterotrophs, including fungi, despite elevated heavy metal concentrations. Notably, the highest microbial diversity was observed in drainage water with low metal content. These findings suggest that physicochemical factors, such as pH and metal/metalloid concentration, play a pivotal role in shaping environmental microbiomes and influencing community composition. Furthermore, while biogeochemical processes (e.g., Fe(II) oxidation, sulfide precipitation, metal immobilization) may already be contributing to natural mine water remediation, unfavorable equilibria in the iron cycle caused by acidification could be compensated for through bioremediation using beneficial microorganisms, such as Variovorax or Arthrobacter isolates.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20801 - Environmental biotechnology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied and Environmental Microbiology>

ISSN

0099-2240

e-ISSN

—

Svazek periodika

91

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

e02555-24

Kód UT WoS článku

001560193100001

EID výsledku v databázi Scopus

2-s2.0-105019818842