Fig. 2From: Improved chromium tolerance of Medicago sativa by plant growth-promoting rhizobacteria (PGPR)Effect of bacterial inoculation on chlorophyll (A), proline (B), MDA (C), and H2O2 (D) content of M. sativa leaves, in the absence (−Cr (VI)) and in the presence of (+Cr (VI)). Values are means ± SD; values with different letters are significantly different (p < 0.05)Back to article page