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

Figure 5

Effects of As and PNSB on Vigna mungo growth as compared to the control plants (control = 100%, plants exposed neither to As nor PNSB). In presence of As, shoot and root lengths decreased up to 30.7% and 29.7%, respectively, as compared to the control plants. In presence of R. palustris CS2, shoot and root lengths increased up to 17 and 21.7%, whereas in presence of R. faecalis SS5 shoot and root lengths increased up to 12.8 and 18.8%, respectively. In presence of both R. palustris CS2 and R. faecalis SS5, shoot length and root length increased up to 15.4 and 24.2%, respectively. different from control, .