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Table 1 Ion concentrations of Cd, Cu and Si in the rice root under stress

From: Silicon mitigates heavy metal stress by regulating P-type heavy metal ATPases, Oryza sativalow silicon genes, and endogenous phytohormones

Treatments

Ion concentrations (μmol g-1)

 

Cd

Cu

Si

1-DAT

Control

ND

20.8 ± 2.1 c

201.32 ± 3.21 d

Si

ND

37.8 ± 4.6 c

765.8 ± 39.8 c

Cu

ND

2777.4 ± 207.1 a

677.6 ± 22.7 c

Cd

611.5 ± 78.0 a

39.2 ± 2.1 c

788.1 ± 58.4 c

Cu + Si

ND

1374.0 ± 179.6 b

3482.6 ± 155.9 a

Cd + Si

263.2 ± 14.2 b

28.0 ± 3.6 c

2104.2 ± 17.3 b

5-DAT

Control

ND

24.5 ± 1.2 d

234.2 ± 5.2 d

Si

ND

45.0 ± 4.9 c

600.5 ± 8.9 c

Cu

ND

2398.3 ± 88.0 a

612.8 ± 65.7 c

Cd

934.0 ± 49.4 a

45.6 ± 4.7 c

797.7 ± 54.2 c

Cu + Si

ND

1903.4 ± 14.8 b

1778.8 ± 35.4 a

Cd + Si

399.6 ± 15.7 b

37.7 ± 4.1 c

1383.7 ± 49.8 b

10-DAT

Control

ND

31.3 ± 6.1 d

119.2 ± 2.4 d

Si

ND

48.8 ± 6.9 c

126.1 ± 9.0 d

Cu

ND

1433.8 ± 105.2 a

167.1 ± 14.3 c

Cd

680.7 ± 30.9 a

51.0 ± 2.3 c

170.6 ± 45.0 c

Cu + Si

ND

977.8 ± 16.8 b

390.9 ± 19.4 a

Cd + Si

342.0 ± 42.9 b

49.5 ± 0.6 c

231.1 ± 61.7 b

  1. Mean ± standard error from three replications per treatment. ND, Not detected; DAT, Days after treatment. In the column, the same letters indicate not significant difference (P > 0.05) by Duncan’s Multiple Range Test (DMRT).
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BMC Plant Biology

ISSN: 1471-2229

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