Effect of supplied phytosiderophore on ⁵⁹Fe absorption and translocation in Fe-deficient barley grown hydroponically in low phosphorus media

Figures & data

Table 1 Dry weight and chlorophyll index in barley plants grown in Fe-deficient media with different P levels at 12 days after treatment

Treatment P (µmol L^−1)	500	50	5	0.5
Shoot DW (mg bunch^−1)	467 ± 45.9 c	812 ± 44.5 a	669 ± 32.4 ab	576 ± 12.8 b
Root DW (mg bunch^−1)	213 ± 9.0 b	418 ± 8.3 a	348 ± 21.4 a	329 ± 20.4 a
Chlorophyll index (SPAD value)	3 ± 0.58 b	23 ± 1.9 a	24 ± 1.6 a	26 ± 1.8 a
Means with standard deviation followed by different letters in each column are significantly different (P = 0.05) according to Duncan's Multiple Range Tests. DW, dry weight.

Figure 1  (a) Total absorption and (b) root absorption activity of 59Fe in barley plants grown in Fe-deficient media with different P levels, with or without phytosiderophores (PS) (small letters for plants without PS and capital letters for plants with PS). Different letters indicate significant differences (P < 0.05) among P levels. Asterisks indicate significant differences (P < 0.05) between treatments with or without PS at each P level. DW, dry weight.

Figure 2  (a) Translocation, (b) concentration in shoots and (c) relative translocation rate of 59Fe to shoots in barley plants grown in Fe-deficient media with different P levels, with or without phytosiderophores (PS) (small letters for plants without PS and capital letters for plants with PS). DW, dry weight.

Figure 3  (a) Total absorption and (b) root absorption activity of apoplastic 59Fe in roots in barley plants grown in Fe-deficient media with different P levels, with or without phytosiderophores (PS) (small letters for plants without PS and capital letters for plants with PS). DW, dry weight.