TABLE 1.

Transgene expression quantification by qRT-PCR.

Treatment	Distance from apex	2–[Δ][Δ]Ct values for transgene expression
		36 h	48 h
Well-watered	0–5 mm	0.73 ± 0.06**	0.64 ± 0.07*
	5–12 mm	0.21 ± 0.02	0.20 ± 0.02
Water-stressed	0–5 mm	0.43 ± 0.01*▲▲	0.45 ± 0.07*
	5–12 mm	0.10 ± 0.04▲	0.12 ± 0.01▲▲

2^{–[Δ][Δ]Ct} values in the apical (0–5 mm from the apex) and basal (5–12 mm from the apex) regions of the primary root in the CK44 oxalate oxidase transgenic line at 36 or 48 h after transplanting to well-watered or water-stressed (−1.6 MPa) conditions. Data are means ± SE of three samples. Asterisks denote significant differences between the 0–5 mm and 5–12 mm regions (t-test; * P < 0.05; ** P < 0.01). Triangles denote significant differences between well-watered and water-stressed treatments (t-test; ^▲P < 0.1; ^▲▲P < 0.05).