Table 1.
Volumes of guttation fluid at the tip (entire amount collected) or xylem exudate both at and various distances from the base (collected after 1h) in 7-d-old first leaves of rice plants fed various compounds at a concentration of 10mM, or 350 µM MPA
Values are the mean ±SE of three independent experiments of 24 plants.
| Distance from base (cm) | Mean volume of xylem exudate/guttation fluid per compound ±SE (µl) | ||||||
|---|---|---|---|---|---|---|---|
| Control | Malate | Ala | Gln | Asn | Control+MPA | Asn+MPA | |
| Base | 60±4.04 | 71±8.90 | 101±8.69 | 112±11.00 | 140±14.29 | 61±4.06 | 130±12.90 |
| 1 | 11.5±0.76 | 33±4.41 | 58±5.29 | 62±6.11 | 111±11.26 | 20±2.52 | 92±8.51 |
| 2 | 0.2±0.06 | 0.4±0.12 | 53±4.58 | 45±5.13 | 62±7.06 | 21±2.60 | 95±10.02 |
| Tip | 41±2.08 | 62±6.69 | 135±11.37 | 70±8.02 | 103±10.49 | 67±4.36 | 96±8.54 |