Acidithiobacillus ferrianus sp. nov.: an ancestral extremely acidophilic and facultatively anaerobic chemolithoautotroph
Archivos
Fecha
2020-03
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Springer
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Strain MG, isolated from an acidic pond sediment on the island of Milos (Greece), is proposed as a novel species of fer rous iron- and sulfur-oxidizing Acidithiobacillus. Currently, four of the eight validated species of this genus oxidize ferrous
iron, and strain MG shares many key characteristics with these four, including the capacities for catalyzing the oxidative
dissolution of pyrite and for anaerobic growth via ferric iron respiration. Strain MG also grows aerobically on hydrogen
and anaerobically on hydrogen coupled to ferric iron reduction. While the 16S rRNA genes of the iron-oxidizing Acidi thiobacillus species (and strain MG) are located in a distinct phylogenetic clade and are closely related (98–99% 16S rRNA
gene identity), genomic relatedness indexes (ANI/dDDH) revealed strong genomic divergence between strain MG and all
sequenced type strains of the taxon, and placed MG as the frst cultured representative of an ancestral phylotype of iron
oxidizing acidithiobacilli. Strain MG is proposed as a novel species, Acidithiobacillus ferrianus sp. nov. The type strain is
MGT (=DSM 107098T=JCM 33084T). Similar strains have been found as isolates or indicated by cloned 16S rRNA genes
from several mineral sulfde mine sites.
Notas
Palabras clave
Acidithiobacillus ferrianus · Ferrous iron oxidation · Ferric iron reduction · Hydrogen oxidation · Sulfur oxidation
Citación
Extremophiles Open AccessVolume 24, Issue 2, Pages 329 - 3371 March 2020