Table 2 The effects of nine kind of 10 mM carbohydrates on net nitrate uptake by rice roots.
From: Positive feed-forward regulation of nitrate uptake by rice roots and its molecular mechanism
Carbohydrates (10 mM) | D-Sucrose | D-Fructose | P | D-Glucose | P | D-Raffinose | P |
|---|---|---|---|---|---|---|---|
Physiological characteristics | Principal sugar transported in phloem | Metabolic intermediate | Metabolic intermediate | Phloem mobile | |||
Chemical characteristics | Disaccharide | 6-C monosaccharide | 6-C monosaccharide | Trisaccharide | |||
Lag after addition (min) | 0 (4) | 19.8 ± 5.2 (4) | < 0.001* | 27.4 ± 18.7 (4) | 0.015* | 26.2 ± 17.8 (4) | 0.015* |
Increase over 2 h (%) | 85.0 ± 29.2 | 25.4 ± 11.6 (4) | 0.020* | 31.7 ± 8.1 (4) | 0.031* | 26.6 ± 3.7(4) | 0.027* |
