Calcium Mitigates Arsenic Toxicity in Rice Seedlings by Reducing Arsenic Uptake and Modulating the Antioxidant Defense and Glyoxalase Systems and Stress Markers
Table 1
Arsenic content, dry weight, leaf relative water content, and proline content in rice seedlings treated with Ca under As stress. Here, Ca, As0.5, and As1 indicate 10 mM CaCl2, 0.5 mM Na2HAsO4, and 1 mM Na2HAsO4, respectively.
Treatments
As content in shoot (mg g−1 DW)
As content in root (mg g−1 DW)
Dry weight (g ten seedlings−1)
Leaf RWC (%)
Pro content (mol g−1 FW)
Control
ND
ND
0.178 ± 0.004 A
95.53 ± 2.74 A
0.27 ± 0.02 D
Ca
ND
ND
0.171 ± 0.008 AB
93.41 ± 1.16 AB
0.29 ± 0.03 D
As0.5
6.017 ± 0.281 B
22.59 ± 0.467 B
0.128 ± 0.004 D
76.51 ± 2.43 D
0.50 ± 0.01 B
As0.5 + Ca
4.013 ± 0.0.062 C
14.28 ± 1.059 C
0.160 ± 0.005 B
90.11 ± 1.92 B
0.33 ± 0.01 C
As1
10.638 ± 0.640 A
28.65 ± 0.138 A
0.116 ± 0.003 E
69.85 ± 2.32 E
0.73 ± 0.02 A
As1 + Ca
5.675 ± 0.414 B
22.60 ± 0.181 B
0.142 ± 0.004 C
81.46 ± 1.79 C
0.45 ± 0.02 B
Means (±SD) were calculated from three replications for each treatment. Bars with different letters are significantly different at applying Fisher’s LSD test.