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Table 1 Summary of physiological and genetic data obtained for the Thiomonas strains used in this study.

From: Carbon and arsenic metabolism in Thiomonas strains: differences revealed diverse adaptation processes

Thiomonas strains Arsenic-related phenotype/genotype Growth with different electron donorsc Influence of As(III) on final cell concentrationg
  As(III) Oxidation MIC (mM) Motilitya Effect of arsenite on strain motilityb PCR amplification of arsenic-related genes As(III)d, e YE + As(III)f YEf YE + S2O32- S2O32-e   
   As(III) As(V)    aoxAB arsB1 arsB2       YE 0.1 g L-1 YE 0.2 g L-1
3As + 10 100 2.9 / + + + - + ++ +++ - - (69%) - (67%)
Ynys1 - 5 12.5 5.6 - (35%) - + - - nd - +++ - nd nd
WJ68 + 10 > 100 38.7 + (6%) + + - - nd ++ +++ - nd nd
Tm. arsenivorans + 10 100 4.5 + (24%) + - + ++ ++ ++ +++ ++ + (25%) /
Tm. perometabolis - 5 > 100 0 / - + - - nd - +++ - nd nd
  1. a Diameter (mm) of swimming ring formed on 0.3% agar plates after 72 h incubation expressed as a difference with non motile strains (forming colonies of < 3 mm diameter); bMotility was tested in the presence of 1.33 mM of arsenite: "+" indicates a diameter of swimming ring greater than in absence of arsenite, "-" a smaller one and "/" no change. cBasel medium (MCSM or m126) amended with either yeast extract (YE), thiosulfate or arsenite or combinations thereof. d5,33 mM in case of 3As, WJ68, and Tm. arsenivorans, 2.67 mM in case of Ynys1 and Tm. perometabolis. eGrowth is expressed as an increase of colony forming units (cfu) observed after 10 days; -, no increase; fTested with 0.1, 0.2, 0.3% or 0.5% YE in absence of As(III), with 0.1, 0.2 or 0.3% YE and 1.3 mM of As(III), or with 0.3% YE and 2.6 mM As(III), except for WJ68, tested in 0.5% YE, without As(III). g1.33 mM As(III) in MCSM. nd: no data.