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Genome Analysis of the Psychrotolerant Acidophile Acidithiobacillus ferrivorans CF27

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Talla, Emmanuel | Hedrich, Sabrina | Ji, Bo Yang | Johnson, D. Barrie | Bonnefoy, Violaine

Edité par CCSD ; Trans Tech Publications -

A utilisé MicroScope Platform. International audience. Four well-differentiated clusters have been identified among iron-oxidizing acidithiobacilli . One monophyletic group clusters with At. ferrooxidans T and another with strains of At. ferrivorans . While At . ferrooxidans and At. ferrivorans share many physiological traits, they differ in some phenotypic characteristics such as motility, pH and temperature minima, and also in terms of genes involved in ferrous iron oxidation. The genome of a strain (CF27) of At. ferrivorans , which is characterized by its marked propensity to form macroscopic growths and biofilms, was sequenced at Genoscope (Evry, France). Comparative genomic studies were carried with all related Acidithiobacillus strains that have been sequenced to date, in order to identify genetic determinants responsible for physiological traits relating to the oxidation of iron and sulfur, and also to extracellular polymeric substances formation.

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