Dissolution of Arsenic Minerals Mediated by Dissimilatory Arsenate Reducing Bacteria: Estimation of the Physiological Potential for Arsenic Mobilization

Table 1

Tolerance to arsenic and arsenate reductase activity and the presence of arsenic metabolism genes.

Strain	Temperature (°C)		pH		MIC for AsV (mM)	MIC for AsIII (mM)	Presence of genes coding for cytoplasmic and respiratory arsenate reductases
	Range	Optimum	Range	Optimum			arsC	arrA
Shewanella sp. OM1	4–37	30	5–10	7	350	10	+	+
Pseudomonas sp. OM2	4–37	30	5–9	5	250	14	+	+
Aeromonas sp. OM4	4–37	37	5–8	5	350	16	+	+
Serratia sp. OM17	4–37	30	4–10	4	400	12	+	+