SeqCode Registry
Register List https://seqco.de/r:mdxiw6u8 [2026]

Desulfamplus magnetovallimortis gen. nov. sp. nov.

Submitted by Monteil, Caroline L.

Genus Desulfamplus

Etymology
[De.sul.fam'plus] N.L. pref. desulf-, desulfuricating; L. masc. adj. amplus, large; N.L. masc. n. Desulfamplus, a large sulfate-reducer
Nomenclatural type
Species Desulfamplus magnetovallimortisTs
Description
Cells are Gram-negative, relatively large rods and motile by mean of a single polar flagellum. They are strict anaerobes, using sulfate as terminal electron acceptor that is reduced to sulfide. The two main cellular fatty acids are C16:1 7c and C16:0 while the major respiratory quinone is the menaquinone MK-7. The genus Desulfamplus belongs to the Desulfobacterota  phylum with its closest relative species belonging to genus Desulfobacterium. The type species is D. magnetovallimortis BW-1T. The taxonumber is GA00026.
Classification
Bacteria » Desulfobacterota » Desulfobacteria » Desulfobacterales » Desulfobacteraceae » Desulfamplus
References
Effective publication: Descamps et al., 2017 [1]
Original (not valid) publication: Lefèvre et al., 2011 [2]

Species Desulfamplus magnetovallimortisTs

Etymology
[mag.ne.to.val.li.mor'tis] Gr. masc. n. magnes, pertaining to a magnet; L. fem. n. vallis, valley; L. fem. n. mors, death; N.L. gen. n. magnetovallimortis, of the magnetic valley of death, referring to the presence of magnetosomes and the organism’s association with extreme or anoxic environments, metaphorically described as a "valley of death."
Nomenclatural type
NCBI Assembly: GCF_900170035.1 Ts
Reference Strain
Strain sc|0042093: BW-1 = DSM 103535 = JCM 18010
Description
Species description is as for genus, with the following additional characteristics. Cells are, on average, 2 m long and 1 m wide.
Capable of chemoorganoheterotrophic growth, using fumarate, lactate, pyruvate, malate and succinate as electron donors and carbon sources. Sulfate and thiosulfate are used as terminal electron acceptors. Addition of at least 10 g NaCl L−1 is necessary for growth; optimum NaCl concentration for growth is 15–25 g L−1. Temperature requirements: Tmin, 10 ◦C; Topt, 28 ◦C; Tmax, 35 ◦C. The pH range for growth is 6.5–7.5; optimum 7. The G–C content of the genome is 41 mol%. The major cellular fatty acids are C16:1 7c, C16:0, C17:1 6c, C15:0, C17:0, C15:1 6c, C18:1 7c, C17:1 8c and C14:0. The type strain, BW-1T (= JCM 18010T = DSM 103535T) was isolated from a brackish spring in Death Valley National Park (California, USA). The taxonumber is TA00086.

Classification
Bacteria » Desulfobacterota » Desulfobacteria » Desulfobacterales » Desulfobacteraceae » Desulfamplus » Desulfamplus magnetovallimortisTs
References
Effective publication: Descamps et al., 2017 [1]
Original (not valid) publication: Lefèvre et al., 2011 [2]
Corrigendum: Descamps et al., 2017 [1] (from “Desulfamplus magnetomortis”)
Assigned taxonomically: Descamps et al., 2017 [1]

References

  1. Descamps et al. (2017). Desulfamplus magnetovallimortis gen. nov., sp. nov., a magnetotactic bacterium from a brackish desert spring able to biomineralize greigite and magnetite, that represents a novel lineage in the Desulfobacteraceae. Systematic and Applied Microbiology. DOI:10.1016/j.syapm.2017.05.001
  2. Lefèvre et al. (2011). A Cultured Greigite-Producing Magnetotactic Bacterium in a Novel Group of Sulfate-Reducing Bacteria. Science. DOI:10.1126/science.1212596

Register List Certificate of Validation

On behalf of the Committee on the Systematics of Prokaryotes Described from Sequence Data (SeqCode Committee), we hereby certify that the Register List seqco.de/r:mdxiw6u8 submitted by Monteil, Caroline L. and including 2 new names has been successfully validated.


Date of Priority: 2026-08-14 02:01 UTC
DOI: 10.57973/seqcode.r:mdxiw6u8