Table 1.

SO₄²⁻contents (mg g⁻¹ DW), (Cl⁻+NO₃⁻+PO₄³⁻) contents (mg g⁻¹ DW) and ([Cl⁻]+[NO₃⁻]+[PO₄³⁻]):[SO₄²⁻] ratios in leaves of B. napus, B. oleracea, T. aestivum, Z. mays, S. lycopersicum,and M. truncatula following different S treatments (+S: control treatment, white columns, -S: S deprivation treatment, grey columns) of plants grown under controlled conditions (given in Supplemental Data SD2). Data are given as the mean ± SE (n= 4). *, ** and *** indicate significant difference between control and S deprived plants for p < 0.05, p < 0.01 and p< 0.001, respectively.

Species	Day of Treatment	SO42− Content (mg g−1 DW)		(Cl−+NO3−+PO42−) Content (mg g−1 DW)		([Cl−]+[NO3−]+[PO42−])/[SO42−] Ratio
		+S	−S	+S	−S	+S	−S
B. napus	0	24.38 ± 1.83		59.79 ± 7.37		2.32 ± 0.28
	3	26.20 ± 1.23	15.90 ± 1.44***	63.65 ± 0.96	70.86 ± 5.68	2.43 ± 0.11	4.46 ± 0.39**
	13	29.85 ± 0.50	8.05 ± 0.48***	62.83 ± 5.86	86.42 ± 4.66**	2.10 ± 0.20	10.74 ± 0.17***
B. oleracea	135	7.05 ± 1.22	0.35 ± 0.04***	44.9 ± 6.85	61.87 ± 3.27*	6.36 ± 1.06	176.77 ± 40.89**
T. aestivum	0	3.03 ± 0.09		63.58 ± 0.80		20.98 ± 0.76
	8	1.94 ± 0.05	1.15 ± 0.03	59.34 ± 2.10	68.04 ± 0.84**	30.58 ± 0.53	59.16 ± 2.36***
	16	2.17 ± 0.06	0.50 ± 0.05***	64.79 ± 1.29	70.19 ± 1.80*	29.85 ± 0.53	140.38 ± 15.81***
Z. mays	0	2.02 ± 0.49		74.74 ± 1.55		37.00 ± 7.16
	5	3.44 ± 0.07	1.39 ± 0.08***	78.31 ± 2.82	91.71 ± 1.28**	22.76 ± 1.09	56.33 ± 3.45***
	18	1.38 ± 0.05	0.27 ± 0.02***	70.38 ± 3.46	103.28 ± 0.79***	51.00 ± 2.19	382.51 ± 23.44***
S. lycopersicum	75	63.75 ± 4.79	50.39 ± 2.42*	68.84 ± 4.61	87.77 ± 2.44*	1.07 ± 0.15	1.74 ± 0.10**
M. truncatula	0	3.31 ± 0.16		25.32 ± 0.60		7.55 ± 0.21
	8	3.60 ± 0.12	0.15 ± 0.01***	25.40 ± 1.54	34.27 ± 3.44*	7.05 ± 0.48	228.47 ± 25.21***
	21	4.75 ± 0.18	0.26 ± 0.01***	25.92 ± 1.94	34.90 ± 2.46*	5.49 ± 0.50	134.23 ± 12.48***