Sulfobacillus benefaciens sp. nov., an acidophilic facultative anaerobic Firmicute isolated from mineral bioleaching operations.

Extremophiles : Life Under Extreme Conditions
D B JohnsonKevin B Hallberg

Abstract

Gram-positive bacteria found as the sole Firmicutes present in two mineral bioleaching stirred tanks, and a third bacterium isolated from a heap leaching operation, were shown to be closely related to each other but distinct from characterized acidophilic iron- and sulfur-oxidizing bacteria of the genus Sulfobacillus, to which they were affiliated. One of the isolates (BRGM2) was shown to be a thermo-tolerant (temperature optimum 38.5 degrees C, and maximum 47 degrees C) obligate acidophile (pH optimum 1.5, and minimum 0.8), and also noted to be a facultative anaerobe, growing via ferric iron respiration in the absence of oxygen. Although isolates BRGM2 and TVK8 were able to metabolize many monomeric organic substrates, their propensity for autotrophic growth was found to be greater than that of Sulfobacillus thermosulfidooxidans and the related acidophile, Sb. acidophilus. Faster growth rates of the novel isolates in the absence of organic carbon was considered to be a major reason why they, rather than Sb. thermosulfidooxidans (which shared many physiological characteristics) more successfully exploited conditions in the stirred tanks. Based on their phylogenetic and phenotypic characteristics, the isolates are designated str...Continue Reading

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Citations

Aug 20, 2010·Environmental Technology·Barbara NicolausEbru Toksoy Oner
Sep 25, 2012·Applied and Environmental Microbiology·Nicholas B JusticeJillian F Banfield
Sep 20, 2011·Applied and Environmental Microbiology·S M Deane, D E Rawlings
Apr 23, 2014·Environmental Microbiology·Nicholas B JusticeJillian F Banfield
Oct 15, 2013·FEMS Microbiology Letters·Sabrina Hedrich, D Barrie Johnson
Apr 24, 2010·Mikrobiologiia·I A TsaplinaT F Kondrat'eva
Apr 21, 2019·Environmental Science and Pollution Research International·Mingyan ShiYaoqian Chen
Jan 9, 2021·Extremophiles : Life Under Extreme Conditions·Diego Rojas-GätjensMax Chavarría
May 28, 2021·Frontiers in Microbiology·Tangjian PengWeimin Zeng
Jul 9, 2021·International Journal of Systematic and Evolutionary Microbiology·Ruiyong ZhangAxel Schippers

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