Table 3.
Analysis of phloem sap.
| Compound | Conjugated Amino Acid | Concentration in Phloem Sap a (µmol/L) | Significant Difference c |
|---|---|---|---|
| 4a | Glycine (Gly) | 13.48 ± 1.47 | bc |
| 4b | L-Alanine (L-Ala) | 14.36 ± 1.60 | b |
| 4c | L-Leucine (L-Leu) | 8.21 ± 1.44 | de |
| 4d | L-Valine (L-Val) | 23.94 ± 2.84 | a |
| 4e | L-Methionine (L-Met) | 2.90 ± 0.51 | f |
| 4f | L-Threonine (L-Thr) | 5.80 ± 0.71 | def |
| 4g | L-Isoleucine (L-Ile) | 2.59 ± 0.40 | f |
| 4h | L-Phenylalanine (L-Phe) | 4.76 ± 0.84 | ef |
| 4i | L-Tryptophan (L-Trp) | ND b | - |
| 4j | L-Tyrosine (L-Tyr) | ND | - |
| 4k | L-Glutamic acid (L-Glu) | ND | |
| 4l | L-Asparagine (L-Asn) | 9.65 ± 0.33 | cd |
| PCA | - | ND | - |
a Phloem sap collection started at two hours to the end of four hours. Each data point is the mean of 12 seedlings ± SE (n = 3). b ND means not detected. c Significant difference means differences between three repetitions of the detected concentration in phloem sap of each conjugate at 5% level.