Table 4.

qRT-PCR expression of transcription factor genes normalize with reference gene delta-CT ($\mathsf{\Delta }$C_T) are shown as fold changes (log₂^[−P/+P]).

Genes	Fengqing			Longjing-43
	Young Shoots	Leaves	Root	Young Shoots	Leaves	Root
PHR1	0.89 ***	1.03 *	0.69 *	0.01 *	0.95 *	0.86 **
PHO1	1.01 *	1.21 NS	0.70 *	0.81 NS	0.78 *	1.20 ***
SPX2	1.70 **	1.21 *	1.53 ***	1.76 ***	0.82 ***	0.55 ***

NS, ***, ** and *: indicate not significant or significance at 0.001, 0.01, and 0.05 levels between P treatments by t-test, respectively.