The impact of chromium ion stress on plant growth, developmental physiology, and molecular regulation.

However, the CAT content in maize ( Zea mays ) first showed a trend of decreasing ( Table 3 ), then increasing and then decreasing with chromium treatment concentration which may be due to the iron porphyrin contained in the CAT structure, and the interaction between chromium and iron in the metabolic pool resulting a reduction in its activity.

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When mustard ( Brassica juncea ) was treated with different concentrations of chromium, it was found that the activities of SOD, CAT, and APX in roots and leaves first increased and later decreased (Pandey et al., 2005 ; Hübner et al., 2010 ), while glutathione transferase (GST) and glutathione reductase (GR) showed an increasing trend.

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