Sulfoacidibacillus ferrooxidans, gen. nov., sp. nov., Sulfoacidibacillus thermotolerans, gen. nov., sp. nov., and Ferroacidibacillus organovorans, gen. nov., sp. nov.: extremely acidophilic chemolitho-heterotrophic Firmicutes

D. Barrie Johnson; David S. Holmes; Eva Vergara; Roseanne Holanda; Eva Pakostova

doi:10.1016/j.resmic.2022.104008

Sulfoacidibacillus ferrooxidans, gen. nov., sp. nov., Sulfoacidibacillus thermotolerans, gen. nov., sp. nov., and Ferroacidibacillus organovorans, gen. nov., sp. nov.: extremely acidophilic chemolitho-heterotrophic Firmicutes

D. Barrie Johnson, David S. Holmes, Eva Vergara, Roseanne Holanda, Eva Pakostova

Research output: Contribution to journal › Article › peer-review

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Abstract

Ten strains of extremely acidophilic bacteria, isolated from different environments form a distinct monophyletic clade within the phylum Firmicutes. Comparison of complete genomes of the proposed type strains confirm that they comprise two genera (proposed names Sulfoacidibacillus and Ferroacidibacillus), and at least three species (Sulfoacidibacillus ferrooxidans, Sulfoacidibacillus thermotolerans and Ferroacidibacillus organovorans). The bacterial strains share some physiological traits, including catalysing the dissimilatory oxidation and reduction of iron, and in being obligately heterotrophic. Both species of Sulfoacidibacillus are also able to oxidise elemental sulfur and tetrathionate. Both S. ferrooxidans and Ferroacidibacillus spp. are mesophilic, while S. thermotolerans isolates are moderate thermophiles. The isolates display different degrees of acid-tolerance: Ferroacidibacillus spp. are the most acid-sensitive while the type strain of S. ferrooxidans grows at pH 0.9. MK7 was detected as the sole menaquinone present in all three nominated type strains, and their peptidoglycans all contain meso-2,6 diaminopimelic acid type A1γ. The chromosomal DNA of the strains examined contain between 44 and 52 mol% G + C. The nominated type strains of the new species are S. ferrooxidans S ⁰AB ^T (= DSM 105355 ^T = JCM 33225 ^T); S. thermotolerans Y002 ^T (= ATCC TSD-104 ^T = JCM 31946 ^T); F. organovorans SLC66 ^T (= ATCC TSD-103 ^T = JCM 31945 ^T).

Original language	English
Article number	104008
Number of pages	8
Journal	Research in Microbiology
Volume	174
Issue number	3
Early online date	15 Nov 2022
DOIs	https://doi.org/10.1016/j.resmic.2022.104008
Publication status	Published - 1 Mar 2023

Bibliographical note

© 2022 The Author(s). Published by Elsevier Masson SAS on behalf of Institut Pasteur. This is an open access article under the CC BY-NC-ND license (http://
creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords

Sulfoacidibacillus
Ferroacidibacillus
Acidophiles
Iron oxidation
Oxidation

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Johnson, D. B., Holmes, D. S., Vergara, E., Holanda, R., & Pakostova, E. (2023). Sulfoacidibacillus ferrooxidans, gen. nov., sp. nov., Sulfoacidibacillus thermotolerans, gen. nov., sp. nov., and Ferroacidibacillus organovorans, gen. nov., sp. nov.: extremely acidophilic chemolitho-heterotrophic Firmicutes. Research in Microbiology, 174(3), [104008]. https://doi.org/10.1016/j.resmic.2022.104008

Sulfoacidibacillus ferrooxidans, gen. nov., sp. nov., Sulfoacidibacillus thermotolerans, gen. nov., sp. nov., and Ferroacidibacillus organovorans, gen. nov., sp. nov.: extremely acidophilic chemolitho-heterotrophic Firmicutes. / Johnson, D. Barrie; Holmes, David S.; Vergara, Eva; Holanda, Roseanne; Pakostova, Eva.

In: Research in Microbiology, Vol. 174, No. 3, 104008, 01.03.2023.

Research output: Contribution to journal › Article › peer-review

Johnson, DB, Holmes, DS, Vergara, E, Holanda, R & Pakostova, E 2023, 'Sulfoacidibacillus ferrooxidans, gen. nov., sp. nov., Sulfoacidibacillus thermotolerans, gen. nov., sp. nov., and Ferroacidibacillus organovorans, gen. nov., sp. nov.: extremely acidophilic chemolitho-heterotrophic Firmicutes', Research in Microbiology, vol. 174, no. 3, 104008. https://doi.org/10.1016/j.resmic.2022.104008

Johnson DB, Holmes DS, Vergara E, Holanda R, Pakostova E. Sulfoacidibacillus ferrooxidans, gen. nov., sp. nov., Sulfoacidibacillus thermotolerans, gen. nov., sp. nov., and Ferroacidibacillus organovorans, gen. nov., sp. nov.: extremely acidophilic chemolitho-heterotrophic Firmicutes. Research in Microbiology. 2023 Mar 1;174(3). 104008. https://doi.org/10.1016/j.resmic.2022.104008

Johnson, D. Barrie ; Holmes, David S. ; Vergara, Eva ; Holanda, Roseanne ; Pakostova, Eva. / Sulfoacidibacillus ferrooxidans, gen. nov., sp. nov., Sulfoacidibacillus thermotolerans, gen. nov., sp. nov., and Ferroacidibacillus organovorans, gen. nov., sp. nov.: extremely acidophilic chemolitho-heterotrophic Firmicutes. In: Research in Microbiology. 2023 ; Vol. 174, No. 3.

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abstract = "Ten strains of extremely acidophilic bacteria, isolated from different environments form a distinct monophyletic clade within the phylum Firmicutes. Comparison of complete genomes of the proposed type strains confirm that they comprise two genera (proposed names Sulfoacidibacillus and Ferroacidibacillus), and at least three species (Sulfoacidibacillus ferrooxidans, Sulfoacidibacillus thermotolerans and Ferroacidibacillus organovorans). The bacterial strains share some physiological traits, including catalysing the dissimilatory oxidation and reduction of iron, and in being obligately heterotrophic. Both species of Sulfoacidibacillus are also able to oxidise elemental sulfur and tetrathionate. Both S. ferrooxidans and Ferroacidibacillus spp. are mesophilic, while S. thermotolerans isolates are moderate thermophiles. The isolates display different degrees of acid-tolerance: Ferroacidibacillus spp. are the most acid-sensitive while the type strain of S. ferrooxidans grows at pH 0.9. MK7 was detected as the sole menaquinone present in all three nominated type strains, and their peptidoglycans all contain meso-2,6 diaminopimelic acid type A1γ. The chromosomal DNA of the strains examined contain between 44 and 52 mol% G + C. The nominated type strains of the new species are S. ferrooxidans S 0AB T (= DSM 105355 T = JCM 33225 T); S. thermotolerans Y002 T (= ATCC TSD-104 T = JCM 31946 T); F. organovorans SLC66 T (= ATCC TSD-103 T = JCM 31945 T). ",

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