Concentration (ppm)

Shoot

Root

Lettuce

Control

High [CO₂]

Control

High [CO₂]

Cu

6.06 ± 0.32

4.75 ± 40^*

16.73 ± 1.12

13.49 ± 1.83

Fe

108.01 ± 8.43

94.30 ± 5.18

6696.95 ± 546.96

5380.26 ± 1326.43

Mn

168.70 2 ± 1.46

115.59 ± 8.51

176.97 ± 16.40

149.77 ± 21.24

Zn

42.19 ± 2.03

29.78 ± 0.89^**

32.37 ± 1.075

27.92 ± 3.30

Spinach

Cu

12.721 ± 0.85

10.38 ± 0.90

24.08 ± 0.81

19.68 ± 0.31^**

Fe

161.07 ± 33.39

110.63 ± 5.80

7273. 68 ± 598.60

5057.65 ± 442.67^*

Mn

146.14 ± 12.57

184.57 ± 19.80

201.65 ± 14.93

171.46 ± 9.15

Zn

219.88 ± 11.56

203.76 ± 90

68.55 ± 4.25

56.00 ± 3.37^*