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Table 1 Phenolic acid contents in the rice culture solutions

From: Transcriptome analysis reveals that barnyard grass exudates increase the allelopathic potential of allelopathic and non-allelopathic rice (Oryza sativa) accessions

Phenolic compound (μmol·L− 1)

PI312777

Lemont

Control

Treatment

Control

Treatment

Protocatechuic acid

0.89 ± 0.12b

1.97 ± 0.10a

0.64 ± 0.07b

0.58 ± 0.05b

4-Hydroxybenzoic acid

0.53 ± 0.04a

0.60 ± 0.07a

0.36 ± 0.09b

0.26 ± 0.04b

Syringic acid

5.20 ± 0.13a

3.64 ± 0.07c

3.17 ± 0.07c

4.35 ± 0.16b

Vanillic acid

0.57 ± 0.01a

0.57 ± 0.07a

0.57 ± 0.04a

0.15 ± 0.03b

4-Coumaric acid

2.86 ± 0.05c

6.26 ± 0.82a

1.58 ± 0.38c

5.45 ± 0.30b

Salicylic acid

8.23 ± 0.61b

14.41 ± 0.17a

6.47 ± 0.21c

9.10 ± 0.28b

Ferulic acid

2.36 ± 0.21b

8.60 ± 0.60a

2.36 ± 0.07b

2.95 ± 0.10b

Total

20.65

36.05

15.16

22.83

  1. Means ± standard errors (SE) of three replicates are indicated. The lowercase letters indicate a significance difference at P < 0.05