Table 3.
Phenolic acid content (g kg−1) of control lettuce plants and plants inoculated with Rhizobium laguerreae HUTR05.
| Phenolics Acids (g kg−1) |
Normal Conditions | 100 mM NaCl | ||
|---|---|---|---|---|
| Control (±S.E.) | HUTR05 (±S.E.) | Control (±S.E.) | HUTR05 (±S.E.) | |
| Caffeoyl malic acid | 1.690 (±0.032) | 1.914 (±0.013) * | 1.741 (±0.087) | 2.013 (±0.002) * |
| Caffeoyl quinic acids | 3.566 (±0.018) | 5.080 (±0.023) * | 4.490 (±0.245) # | 4.691 (±0.018) |
| Caffeoyl tartaric acid | 1.868 (±0.013) | 2.417 (±0.010) * | 3.697 (±0.163) # | 4.172 (±0.043) * |
| Cichoric acid (dicaffeoyltartaric acid) | 10.293 (±0.056) | 16.893 (±0.177) * | 12.682 (±0.734) # | 12.452 (±0.109) |
| Coumaric acid | 0.390 (±0.009) | 0.520 (±0.013) * | 0.506 (±0.035) # | 0.588 (±0.007) * |
| Dicaffeoyl quinic acid | 0.765 (±0.016) | 1.610 (±0.014) * | 0.724 (±0.038) | 0.797 (±0.015) |
| Protocatechuic acid glucoside | 0.370 (±0.012) | 0.664 (±0.021) * | 0.522 (±0.054) # | 0.830 (±0.010) * |
| Total phenolics acids | 18.942 (±0.079) | 29.097 (±0.134) * | 24.361 (±1.352) # | 25.542 (±0.156) |
* within the same row and within each type of conditions (non-saline and saline conditions) indicates significant differences from its respective control, # within the 100 mM NaCl control column indicates significant differences from normal conditions control, both according to Fisher’s protected LSD (least significant differences) (p ≤ 0.05). S.E. = standard error.