. 2021 May 4;11:9500. doi: 10.1038/s41598-021-84702-y

Table 2.

Changes in the mineral element contents of C. betulus and C. putoensis under NO₂ stress and after self recovery.

Mineral element	Treatment
Mineral element	CK	1 h	6 h	12 h	24 h5	48 h	72 h	Recovery
N (g/kg dw)
C. betulus	1.4 ± 0.13^a	1.68 ± 0.17^ab	1.12 ± 0.21^ac	1.12 ± 0.11^ac	1.12 ± 0.11^ac	1.12 ± 0.11^ac	0.84 ± 0.08^c	1.53 ± 0.15^ad
C. putoensis	1.12 ± 0.11^a	1.68 ± 0.15^b	1.12 ± 0.11^a	1.12 ± 0.11^a	0.98 ± 0.32^a	0.84 ± 0.08^a	0.46 ± 0.05^c	1.12 ± 0.11^a
P (ppm dw)
C. betulus	0.72 ± 0.06^a	2.14 ± 0.21^b	2.76 ± 0.26^b	2.2 ± 0.21^b	2.5 ± 0.24^b	4.69 ± 0.51^c	4.35 ± 0.44^c	0.93 ± 0.08^a
C. putoensis	1.85 ± 0.20^a	4.78 ± 0.45^b	4.35 ± 0.44^b	2.01 ± 0.20^ac	3.11 ± 0.29^d	2.95 ± 0.30^cd	2.41 ± 0.26^ad	2.03 ± 0.20^a
K (µg L⁻¹ dw)
C. betulus	20.9 ± 2.07^ab	18.6 ± 1.91^abc	16.1 ± 1.59^bcd	15.2 ± 1.49^cde	14.5 ± 1.45^cde	12.1 ± 1.21^de	11.4 ± 1.14^de	21.6 ± 2.16^a
C. putoensis	30.2 ± 3.03^d	14.2 ± 1.38^bc	16.5 ± 1.65^bc	13.2 ± 1.29^ac	9.8 ± 0.98^a	11.3 ± 1.13^a	10.8 ± 1.08^a	18.9 ± 1.89^b
Ca (µg L⁻¹ dw)
C. betulus	232 ± 24.02^b	243 ± 23.90^b	216 ± 31.00^b	198 ± 20.01^b	223 ± 12.00^b	188 ± 18.80^b	84 ± 8.38^a	230 ± 13.00^b
C. putoensis	237 ± 23.80^e	149 ± 15.10^a	172 ± 17.20^ad	205 ± 21.10^cde	168 ± 17.01^ac	159 ± 16.01^ab	137 ± 14.02^a	240 ± 23.89^e
Mg (µg L⁻¹ dw)
C. betulus	23.2 ± 2.29^ac	27.3 ± 1.70^af	26.5 ± 3.60^ae	28 ± 4.80^ag	26.1 ± 1.60^ad	31.3 ± 3.13^bdefg	21.4 ± 2.14^a	30.5 ± 3.05^cdefg
C. putoensis	26.8 ± 2.71^cd	32.2 ± 3.22^d	22.4 ± 2.24^bc	19.5 ± 1.95^ac	19.4 ± 3.90^ab	12.2 ± 1.22^a	22.6 ± 2.26^bc	30.7 ± 3.07^d
Zn (µg L⁻¹ dw)
C. betulus	7.3 ± 0.73^a	10.2 ± 0.45^bd	10.5 ± 1.50^cd	10.6 ± 1.06^cd	9 ± 0.90^ad	7.1 ± 0.69^a	7.4 ± 0.72^ab	11.6 ± 1.09^cd
C. putoensis	7.1 ± 0.68^bc	6.3 ± 0.36^ac	4.5 ± 0.75^a	7.2 ± 0.72^bc	5.7 ± 0.61^ab	11.2 ± 1.12^d	7.9 ± 0.79^bc	10.3 ± 1.03^d
Mn (µg L⁻¹ dw)
C. betulus	107.6 ± 12.70^d	11.2 ± 5.60^a	59.3 ± 9.40^bc	50.6 ± 5.06^b	78.1 ± 7.81^cef	67.7 ± 3.70^be	49.9 ± 3.70^b	90.2 ± 9.02^df
C. putoensis	87.3 ± 8.75^c	85.5 ± 12.70^c	62.3 ± 6.18^b	47.1 ± 4.69^b	21.4 ± 2.09^a	11.8 ± 2.60^a	9.4 ± 1.40^a	80.3 ± 7.98^c