Scientific Reports

Table 1 Macronutrients, micronutrients and selenium total concentrations in initial soil and post-cultivation soil.

From: Foraging for selenium: a comparison between hyperaccumulator and non-accumulator plant species

	Species	Treatment	Ca (mg kgDW⁻¹)	K (mg kgDW⁻¹)	Mg (mg kgDW⁻¹)	Na (mg kgDW⁻¹)	P (mg kgDW⁻¹)	S (mg kgDW⁻¹)	Fe (mg kgDW⁻¹)	Zn (mg kgDW⁻¹)	Se (mg kgDW⁻¹)
Initial soil	–	Control	32,000 ± 700^A	1300 ± 100^A	2220 ± 90^A	220 ± 10^x	160 ± 20^A	630 ± 40^A	6600 ± 200^A	26 ± 2^A	< LoD
		Selenite	32,000 ± 1,000^a	1330 ± 30^a	2300 ± 100^a	204 ± 7^A	180 ± 10^a	550 ± 50^a	6800 ± 200^a	28 ± 3^a	22 ± 1^a
		Selenate	33,000 ± 1,000^w	1370 ± 90^w	2230 ± 60^w	220 ± 20^a	171 ± 7^w	590 ± 40^w	6900 ± 200^w	24 ± 1^w	23 ± 3^w
Post-cultivation soil	S. pinnata	Control	31,900 ± 200^A	1400 ± 100^B	2200 ± 100^A	190 ± 10^y	160 ± 10^A	580 ± 50^A	6700 ± 300^A	26 ± 1^A	< LoD
		Selenite	31,700 ± 600^a	1400 ± 200^a	2400 ± 200^a	230 ± 60^A	180 ± 50^a	510 ± 70^a	6800 ± 300^a	27 ± 5^a	25 ± 3^a
		Selenate	32,300 ± 200^w	1400 ± 200^w	2400 ± 400^w	190 ± 20^a	200 ± 80^w	490 ± 60^w	6700 ± 400^w	24 ± 3^w	25 ± 3^w
	B. juncea	Control	31,500 ± 700^A	1500 ± 300^A	2400 ± 300^A	220 ± 10^x	220 ± 90^A	540 ± 60^A	6600 ± 70^A	29 ± 4^A	< LoD
		Selenite	32,300 ± 600^a	1400 ± 100^a	2300 ± 200^a	210 ± 30^A	170 ± 50^a	480 ± 100^a	7200 ± 400^b	25 ± 3^a	24 ± 2^a
		Selenate	32,000 ± 400^w	1500 ± 200^w	2200 ± 200^w	220 ± 30^a	170 ± 30^w	500 ± 50^w	7300 ± 100^x	26 ± 2^w	27 ± 2^w
	A. bisulcatus	Control	32,000 ± 300^A	1100 ± 100^A	2200 ± 100^A	190 ± 40^y	140 ± 20^A	670 ± 90^A	6600 ± 200^A	24 ± 1^A	< LoD
		Selenite	32,000 ± 500^a	1300 ± 100^a	2200 ± 100^a	190 ± 30^A	160 ± 10^a	530 ± 60^a	6620 ± 70^a	24 ± 1^a	20 ± 1^b
		Selenate	31,900 ± 200^w	1300 ± 100^w	2000 ± 200^w	200 ± 30^a	150 ± 20^w	600 ± 100^w	6,600 ± 300^w	23 ± 1^w	20 ± 2^x
	M. sativa	Control	31,800 ± 200^A	1150 ± 70^A	2100 ± 200^A	173 ± 9^y	120 ± 20^A	630 ± 50^A	6300 ± 200^A	20 ± 1^B	< LoD
		Selenite	31,500 ± 300^a	1300 ± 200^a	2200 ± 100^a	180 ± 20^A	150 ± 20^a	500 ± 100^a	6700 ± 200^a	24 ± 1^a	20 ± 1^b
		Selenate	31,400 ± 500^x	1300 ± 200^w	2100 ± 100^w	200 ± 30^a	160 ± 30^w	510 ± 70^w	6700 ± 100^w	25 ± 2^w	21 ± 2^x

Values are expressed in mg kgDW⁻¹.
LoD Limit of detection.
Letters indicate statistically significant difference for a given element before/after cultivation among different species, after ANOVA/Kruskal–Wallis tests, followed by Tukey HSD/Dunn’s tests, (p < 0.05). Upper-case (A–D) letters refer to control soil; lower-case (a–d) letters refer to selenite soils; upper-case (x–z) letters refers to selenate soils (n = 5).

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