Physiological and Biochemical Responses of Ulva prolifera and Ulva linza to Cadmium Stress
Table 1
Effects of different concentrations of Cd2+ (0, 5, 10, 30, 40, and 80 mol L−1) on inorganic ion content (mmol g−1 DW), K+/Na+ and Ca2+/Na+ of U. prolifera and U. linza.
Cd2+ treatment
Na+
K+
Ca2+
Mg2+
Cl−
K+/Na+
Ca2+/Na+
mol L−1
mmol g−1 DW
mmol g−1 DW
mmol g−1 DW
mmol g−1 DW
mmol g−1 DW
mmol g−1 DW
U. prolifera
0
0.12 ± 0.01 c
0.64 ± 0.04 a
0.20 ± 0.02 b
0.82 ± 0.04 a
0.15 ± 0.01 a
0.34 × × 10−3 c
5.01 ± 0.12 a
1.70 ± 0.08 a
5
0.13 ± 0.02 c
0.62 ± 0.05 a
0.23 ± 0.01 ab
0.78 ± 0.05 a
0.11 ± 0.01 b
0.49 × × 10−3 c
4.86 ± 0.21 a
1.66 ± 0.07 a
10
0.12 ± 0.01 c
0.63 ± 0.04 a
0.23 ± 0.02 ab
0.76 ± 0.05 a
0.10 ± 0.01 b
0.78 × × 10−3 b
5.10 ± 0.14 a
1.84 ± 0.12 a
20
0.17 ± 0.02 b
0.38 ± 0.03 b
0.23 ± 0.02 ab
0.75 ± 0.04 a
0.09 ± 0.01 b
1.41 × × 10−3 a
2.26 ± 0.15 b
1.39 ± 0.10 b
40
0.20 ± 0.02 ab
0.35 ± 0.03 b
0.25 ± 0.02 ab
0.79 ± 0.04 a
0.10 ± 0.01 b
1.40 × × 10−3 a
1.74 ± 0.11 c
1.24 ± 0.08 bc
80
0.22 ± 0.01 a
0.24 ± 0.02 c
0.26 ± 0.02 a
0.73 ± 0.05 a
0.10 ± 0.01 b
1.43 × × 10−3 a
1.12 ± 0.08 d
1.14 ± 0.07 c
U. linza
0
0.25 ± 0.02 b
0.74 ± 0.04 a
0.18 ± 0.02 c
0.78 ± 0.04 a
0.16 ± 0.01 a
0.86 × × 10−3 d
3.02 ± 0.15 a
0.72 ± 0.09 a
5
0.24 ± 0.03 b
0.74 ± 0.04 a
0.17 ± 0.02 c
0.75 ± 0.03 ab
0.12 ± 0.01 b
1.21 × × 10−3 c
3.10 ± 0.23 a
0.73 ± 0.08 a
10
0.24 ± 0.02 b
0.73 ± 0.04 a
0.18 ± 0.01 c
0.72 ± 0.04 ab
0.10 ± 0.02 b
1.89 × × 10−3 a
3.04 ± 0.12 a
0.75 ± 0.06 a
20
0.24 ± 0.01 b
0.68 ± 0.03 a
0.22 ± 0.02 b
0.64 ± 0.03 b
0.10 ± 0.01 b
2.07 × × 10−3 a
2.85 ± 0.11 b
0.83 ± 0.07 a
40
0.26 ± 0.02 b
0.49 ± 0.03 c
0.25 ± 0.02 ab
0.68 ± 0.03 b
0.11 ± 0.01 b
1.65 × × 10−3 b
1.67 ± 0.07 c
0.88 ± 0.08 a
80
0.34 ± 0.02 a
0.37 ± 0.02 d
0.27 ± 0.02 a
0.72 ± 0.04 ab
0.12 ± 0.02 b
1.12 × × 10−3 c
1.10 ± 0.05 d
0.75 ± 0.06 a
The data in the same column are statistically different if labeled with different letters according to Duncan’s multiple range test ().
