TABLE 1.

Manganese-oxidizing properties of Shewanella strains^a

Species and strain	Maximum Mn(II) concentration (mM)b	Rate of oxide production (mg/liter/day)c	Reduction of bioformed oxided
S. denitrificans OS217	7	8.7 ± 2.7	+
S. loihica PV-4	9	20.3 ± 1.6	+
S. oneidensis MR-1	4	4.4 ± 1.2	+
S. putrefaciens 200	7	15.9 ± 3.9	+
S. putrefaciens CN-32	8	13.9 ± 3.1	+

^aCultures were incubated at 27°C.

^bMn(II) concentration at which complete inhibition of oxidation occurred.

^cOxidation at 3 mM Mn(II) (average of replicates ± standard deviation).

^dCultures were switched to anoxic conditions and replenished with 15 mM lactate.