| | |
Total P concentration [mg g−1]
|
Total P content [mg fraction−1]
|
33P recovery [% fraction−1]
|
P uptake [nmol fraction −1]
|
|---|
|
HP
|
Leaf
|
6.80 ± 0.51de
|
8.55 ± 0.33e
|
6.79 ± 0.29j
|
43.4 ± 1.82g
|
| |
Stem
|
4.92 ± 0.55d
|
2.56 ± 0.20d
|
1.35 ± 0.15e
|
8.64 ± 0.96f
|
| |
Fine Root
|
11.27 ± 1.40e
|
4.79 ± 1.49de
|
5.79 ± 0.97i
|
37.01 ± 6.20g
|
| |
Coarse Root
|
6.98 ± 1.41de
|
1.92 ± 0.32d
|
1.04 ± 0.10d
|
6.65 ± 0.65f
|
|
MP
|
Leaf
|
1.25 ± 0.10c
|
0.19 ± 0.03bc
|
4.51 ± 0.38h
|
0.29 ± 0.02d
|
| |
Stem
|
1.11 ± 0.11bc
|
0.11 ± 0.02abc
|
7.22 ± 0.79k
|
0.46 ± 0.05de
|
| |
Fine Root
|
0.67 ± 0.12abc
|
0.08 ± 0.02ab
|
10.07 ± 0.69l
|
0.64 ± 0.04e
|
| |
Coarse Root
|
1.03 ± 0.15bc
|
0.23 ± 0.03c
|
3.73 ± 0.79g
|
0.24 ± 0.05d
|
|
LP
|
Leaf
|
0.69 ± 0.03abc
|
0.15 ± 0.03bc
|
0.08 ± 0.02a
|
0.059 × 10−3 ± 0.001 × 10-3 a
|
| |
Stem
|
0.62 ± 0.17ab
|
0.05 ± 0.02a
|
0.12 ± 0.03b
|
0.088 × 10−3 ± 0.003 × 10-3 a
|
| |
Fine Root
|
0.41 ± 0.10a
|
0.05 ± 0.01a
|
1.94 ± 0.47f
|
1.48 × 10−3 ± 0.35 × 10-3 c
|
| |
Coarse Root
|
0.49 ± 0.03ab
|
0.10 ± 0.01abc
|
0.41 ± 0.19c
|
0.32 × 10−3 ± 0.15 × 10-3 b
|
|
p-value
|
p
(treatment)
|
<0.001
|
<0.001
|
<0.001
|
<0.001
|
|
p-value
|
p
(fraction)
|
0.225
|
<0.001
|
<0.001
|
<0.001
|
|
p-value
|
p
(treatment×fraction)
|
<0.01
|
<0.001
|
<0.001
|
<0.001
|
|
HP
|
whole plant
|
7.10 ± 0.58C
|
17.82 ± 1.38C
|
14.98 ± 1.36B
|
95.69 ± 8.71C
|
|
MP
|
whole plant
|
1.03 ± 0.11B
|
0.61 ± 0.05B
|
25.52 ± 1.84C
|
1.63 ± 0.12B
|
|
LP
|
whole plant
|
0.56 ± 0.04A
|
0.34 ± 0.06A
|
2.55 ± 0.64A
|
1.94 × 10−3 ± 0.49 × 10-3 A
|
|
p-value
| |
<0.001
|
<0.001
|
<0.001
|
<0.001
|
- Total P concentration and total P content per dry mass, 33P recovery and calculated uptake of P after 2 days in tissues of and whole poplar plants grown with one of three different P concentrations in the nutrient solution in sand (HP: 641 μM, MP: 6.4 μM, LP: 0.064 μM). Different letters indicate significant differences (p ≤ 0.05, Two-Way-ANOVA and Tukey’s honest significance test, mean ± SE, n = 4-5)
