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Table 3 Classification based on BLAST results of bacterial 16S rRNA sequences present in enriched cultures

From: Community of thermoacidophilic and arsenic resistant microorganisms isolated from a deep profile of mine heaps

Microorganism Comments Heap (frequency)
Acidobacteria bacterium sp.a Chemoorganotrophic; from acidic mineral environment; non-cultured soil bacterium present in radionuclide- and metal-contaminated environments T27 (1), Q63–66h (5)
Acidovorax temperans Type strain CB2; isolated from an activated sludge wastewater treatment plant in northern New Zealand; forms biofilms, promotes flocculation, removes phosphorous T27 (2)
Acidovorax spp.a Strain JS42; from soil; aerobic; capable of degrading toxic nitroaromatic compounds and polyethylene; As resistance T54 (2)
Bacillus spp. Widely distributed bacterium; highly resistant to As(III) Q63–66h (1)
Brevibacillus borstelensis From soil; thermophilic; lipolytic; degrades polyethylene as C source; in acidic soil waste; previously described in leaching ponds in Cananea Mine, Mexico T54h (2)
Leptospirillum ferriphilum a AMD; bioleaching tank for polymetallic (Cu, Zn and Fe sulfides) concentrates; mine heaps and leaching (pregnant solution) ponds; previously described in leaching ponds of Cananea Mine, Mexico; As resistance Q63–66 (1)
Leptospirillum spp.a Bioleaching tanks, mine heaps and bioleaching (pregnant solution) ponds; Ni mine tailings; As resistance T27 (2), T54 (2), Q63–66 (3)
Paenibacillus spp. P. polymyxa has been studied for bioflotation and bioflocculation; as a soil inoculant in agriculture and horticulture; reported in rock varnish; fixes N; degrades cellulose; some species reduce nitrate; As resistance T27 (1), T54 (2), Q63–66h (2)
Pseudomonas alcaligenes Widely distributed; used as soil inoculant for bioremediation purposes; degrades polycyclic aromatic hydrocarbons T27 (1), T54 (2), Q63 (2)
P. mendocina
Anaerobic; solubilizes Fe minerals; from soil enrichment with ethanol; degrades acyclic isoprenoids; As resistance T54 (2)
Pseudomonas spp. Anaerobic; As resistance Q18h, T54 (2)
P. pseudoalcaligenes Widely distributed; anaerobic; from soil; uses cyanide as N source T27 (1), T54 (1), Q63–66
Sphingomonas spp. Chemoheterotrophic; strictly aerobic; some degrade chlorinated dibenzofurans and dibenzo-p-dioxins; reduces As(V) via arsC; Cu tolerant Q18h (1), Q63-66h (2)
Sulfobacillus acidophilus Mixotrophic; Fe3+ reducer; yeast extract as an electron source; geothermal and sulfur-rich environments Q18h (1)
Sulfobacillus sp. 1a and sp. 2 Mixotrophic for organic compounds (such as yeast extract); AMD; mine heaps; bioleaching tanks for polymetallic concentrates; As tolerant Q18h, sp. 1 (5); Q63–66 (h), sp. 2 (1)
S. thermosulfidooxidans Mixotrophic; geothermal environments; carbon deposits bioleaching tanks of pyrite, Co-pyrite, arsenopyrite, chalcopyrite and chalcocite; mine heaps and leaching ponds; As tolerant Q18h (12), T27 (8), Q63–66h (13)
  1. h cultured with yeast extract, 2% w/v.
  2. aNon-cultivable species (NCBI).