Table 1.
Comparison of phytosiderophore (PS) exudation rates of different species and cultivars grown in nutrient solution culture
| Reference | Species/cultivar | Hydroponic growth conditions | PS sampling/analysis | PS exudation rates (pmol g−1 DW s−1) | ||
|---|---|---|---|---|---|---|
| Clark et al. (1988) | 24 h/indirectly 59Fe(OH)3 | 11 DAG | 15 DAG | 19 DAG | ||
| Sorghum bicolor, MS 35-1 | −Fe | 1343 | 64 | 35 | ||
| Sorghum bicolor, SPV-393 | −Fe | 2569 | 35 | 213 | ||
| Sorghum bicolor, Sudangrass3 | −Fe | 7338 | 125 | 160 | ||
| Hordeum vulgare Europa | −Fe | 5775 | 2697 | 3079 | ||
| +Fe | 9 | 118 | 557 | |||
| Von Wiren et al. (1995) | 2 h/HPLC analysis* | 32 DAG | 35 DAG | |||
| Hordeum vulgare, Taiga | −Fe | ∼ 1030 | ||||
| +Fe | ∼ 6 | |||||
| Sorghum bicolor, Y-303 A | −Fe | ∼ 150 | ||||
| +Fe | ∼ 1 | |||||
| Cakmak et al. (1994) | 4 h/HPLC analysis* | 15 DAG | 25 DAG | |||
| Triticum aestivum, Aroona | −Fe | ∼ 1500 | ∼ 1100 | |||
| −Fe, Zn | ∼ 2300 | ∼ 850 | ||||
| −Zn | ∼ 460 | ∼ 30 | ||||
| +Fe | ∼ 70 | ∼ 20 | ||||
| Schindlegger et al. (2014) | 4 h/LC-MS/MS analysis | 28 DAG | ||||
| Triticum aestivum, Tamaro | −Fe | 2200 | ||||
| Gries et al. (1998) | 13 DAG | |||||
| Hordelymus europaeus | −Fe | 2 h/HPLC analysis | 2500 | |||
| −Cu | 1007 | |||||
| −Zn | 208 | |||||
| −Mn | 361 | |||||
| Control | 361 | |||||
| Yehuda et al. (1996) | 2 h/HPLC analysis* | 15 DAG | ||||
| Zea mais, Alice | −Fe | ∼ 800 | ||||
Exudation rates were converted to SI units to facilitate comparison.
*
Data retrieved from figures. Bold numbers represent the exudate sampling time point expressed in d after germination (DAG).
HPLC, high-performance liquid chromatography.