Draft Genome Sequence of the Mercury-Resistant Bacterium Acinetobacter idrijaensis Strain MII, Isolated from a Mine-Impacted Area, Idrija, Slovenia

Abstract

We report here the first draft assembly for the genome of Acinetobacter idrijaensis strain MII, isolated from the Idrija mercury mine area (Slovenia). This strain shows a strikingly high tolerance to mercury, and the genome sequence shows genes involved in the mechanisms for heavy metal tolerance pathways and multidrug efflux pumps.

Gaseous mercury evasion from bare and grass-covered soils contaminated by mining and ore roasting (Isonzo River alluvial plain, Northeastern Italy)

“…This is consistent with results previously reported in other studies (Agnan et al, 2016;García-Sánchez et al, 2006;Liu et al, 2014;Wallschläger et al, 1999;Wang et al, 2005) and likely confirms that radiation, despite contributing to soil heating and subsequently to the thermal enhancement of Hg 0 fluxes, can also have an effect on Hg 0 evasion independent from that related to soil temperature (Bahlmann et al, 2006). Further research is needed to evaluate the possible contributions of Hg 0 formation and volatilisation related to biotic reduction mediated by Hg-resistant microorganisms, frequently isolated from Hg-contaminated soils (Mahbub et al, 2016) and also present in the Idrija Hg mine area (Bourdineaud et al, 2020;Campos-Guillén et al, 2014;Hines et al, 2000). The relatively scarce bioavailability of the α-HgS fraction predominant in our soils could have limited this contribution, but recent studies suggested that under particular conditions (i.e.…”

The chemical species of mercury accumulated by Pseudomonas idrijaensis, a bacterium from a rock of the Idrija mercury mine, Slovenia.

“…The Hg-resistant bacterium Acinetobacter idrijaensis has been isolated from a soil on the Idrija site. It contains in its genome the merB, merA, merP, merT, and merR genes (Campos-Guillén et al, 2014). This strain is able to grow in the presence of high concentrations of HgCl 2 (200 mg/L, 737 µM) and catalyzes the volatilization of Hg (merA gene).…”

Genetic Basis of Acinetobacter sp. K1 Adaptation Mechanisms to Extreme Environmental Conditions

“…A phylogenetic analysis based on the ANI similarity matrix showed that the closest relationship of the K1 strain was to the A. lwoffii NIPH478. However, Campos-Guillén et al [ 39 ] demonstrated that the 16S rRNA gene of the A. idrijaensis MII strain is 99% identical to the A. lwoffii species, while the same being true for the K1 isolate. In addition, the taxonomic name idrijaensis was not published according to the rules of the International Code of Bacterial Nomenclature (Bacteriological Code) [ 40 ].…”