Table 1. Correlations between expression of ZCT1, ZCT2 and ZCT3 and expression of TIA biosynthetic and regulatory genes.

Genes being compared	Pearson correlation coefficient			P value
	ZCT1	ZCT2	ZCT3	ZCT1	ZCT2	ZCT3
CPR	0.62	0.49	0.36	0.00014	0.0039	0.039
LAMT	0.75	0.88	0.85	<0.00001	<0.00001	<0.00001
TDC	0.73	0.66	0.52	<0.00001	0.000033	0.0022
STR	0.57	0.56	0.54	0.00048	0.00063	0.0011
T19H	−0.47	−0.48	−0.44	0.0064	0.0043	0.0098
16OMT	0.61	0.59	0.42	0.00018	0.00032	0.015
D4H	0.77	0.77	0.68	<0.00001	<0.00001	0.000014
DAT	0.85	0.93	0.86	<0.00001	<0.00001	<0.00001
ORCA2	−0.27	−0.29	−0.44	0.12	0.11	0.011
ORCA3	−0.20	−0.47	−0.25	0.28	0.0060	0.17
CrBPF1	0.24	0.35	0.32	0.18	0.046	0.067
BIS1	0.72	0.77	0.59	<0.00001	<0.00001	0.00031
CrMYC1	0.65	0.54	0.47	0.000050	0.0011	0.0060
CrMYC2	−0.02	−0.15	0.02	0.92	0.40	0.93
CrWRKY1	0.36	0.35	0.37	0.041	0.046	0.035
CrWRKY2	0.36	0.30	0.14	0.039	0.091	0.45
GBF1	−0.59	−0.78	−0.73	0.00033	<0.00001	<0.00001
GBF2	0.62	0.56	0.55	0.00012	0.00080	0.00090
ZCT1	N/A	0.91	0.92	N/A	<0.00001	<0.00001
ZCT2	0.91	N/A	0.92	<0.00001	N/A	<0.00001
ZCT3	0.92	0.92	N/A	<0.00001	<0.00001	N/A

Note:

The Pearson product moment correlation coefficient was determined for the transcript levels of each gene analyzed with the transcript levels of the ZCT1, ZCT2 or ZCT3 genes in the same hairy root line grown for the same amount of time on the same media. P values indicate the significance of the Pearson product moment correlation coefficient (N = 33), with values below 0.05 considered to be statistically significant. Bold font indicates a statistically significant positive correlation in gene expression between the two genes being compared. Italicized font indicates a statistically significant negative correlation in gene expression between the two genes being compared.