. 2021 Aug 7;187(3):1374–1386. doi: 10.1093/plphys/kiab359

Table 3.

Relative percentage values of the peaks assigned to the main phenolics released by Py-GC/MS of poplar CWs from BdPMT1-OE lines obtained in the WT and AtF5H-OE backgrounds, as compared to their respective controls

Line (n Replicates)	Phenol	4-Vinylphenol	G Compounds^a	S Compounds^b	S/G Ratio
WT control (4)	5.33 (0.46)^a^,^b	0.21 (0.07)^e	24.76 (1.31)^a	69.71 (1.57)^b	2.82 (0.21)^b
BdPMT1-OE/WT line 9 (4)	4.60 (0.94)^a^,^b	10.73 (0.35)^b	21.84 (0.80)^b	62.83 (1.11)^c	2.88 (0.13)^b
BdPMT1-OE/WT line 17 (4)	5.43 (0.43)^a^,^b	15.44 (0.71)^a	20.69 (0.78)^b^c	58.44 (0.43)^d	2.83 (0.12)^b
BdPMT1-OE/WT line 31 (4)	5.06 (0.56)^a^,^b	5.40 (1.46)^d	24.10 (0.89)^a	65.44 (2.40)^b^c	2.72 (0.19)^b
AtF5H-OE control (4)	4.99 (0.70)^a^,^b	0.10 (0.04)^e	18.64 (0.94)^cd	76.38 (1.53)^a	4.11 (0.29)^a
BdPMT1-OE/AtF5H-OE line 1 (4)	4.40 (1.17)^b	1.15 (0.010)^e	17.86 (1.69)^d	76.59 (2.74)^a	4.32 (0.52)^a
BdPMT1-OE/AtF5H-OE line 21 (3)	6.21 (0.42)^a	7.43 (0.25)^c	16.40 (0.85)^d	69.95 (0.56)^b	4.27 (0.24)^a

These area values are expressed as percentage of the total area per sample (set to 100). The data represent mean (SD) values from n biological replicates. Different letters in columns indicate significant differences (Duncan test, P < 0.01)

G compounds include: guaiacol, 4-methylguaiacol, 4-ethylguaiacol, 4-vinylguaiacol, 4-allylguaiacol (two isomers), vanillin, acetoguaiacone, guaiacylacetone.

S compounds include: syringol, 4-methylsyringol, 4-ethylsyringol, 4-vinylsyringol, 4-allylsyringol (two isomers), syringaldehyde, acetosyringone, syringylacetone.