Arsenic-Redox Transformation and Plant Growth Promotion by Purple Nonsulfur Bacteria Rhodopseudomonas palustris CS2 and Rhodopseudomonas faecalis SS5

Figure 3

As-oxidation/reduction by PNSB. Bacterial cell suspensions were incubated for 5 hours in normal saline containing either 10 mM As(V) or 5 mM As(III). Highest As(V) reduction was shown by R. palustris CS2 up to 62.9% ( mM), whereas highest As(III) oxidation was shown by R. faecalis SS5 up to 96% ( mM).