. 2014 Jan 27;9(1):e87582. doi: 10.1371/journal.pone.0087582

Table 1. Cd and Zn content and their effects on MDA and protein carbonyl contents and DNA in tobacco seedlings after exposure to Cd (10 and 15 µM), Zn (25 and 50 µM) and their combinations.

Treatment	Cd content µg g⁻¹ _DW	Zn content µg g⁻¹ _DW	MDA content µmol g⁻¹ _FW	Carbonyl content µmol mg⁻¹ _protein	% tail DNA
control	<0.001^d	171.4±9.3^c	186.29±30.23^bc	50.12±3.87^c	2.95±0.73^e
10 µM Cd	102.5±12.1^c	125.8±8.9^c	237.23±20.59^ab	69.73±6.20^ab	7.45±1.29^bc
15 µM Cd	261.5±17.8^a	100.9±7.2^c	259.74±40.78^a	71.94±2.87^a	7.13±1.67^cd
25 µM Zn	<0.001^d	240.4±5.0^bc	184.36±13.63^bc	53.30±4.13^c	7.49±0.63^bc
50 µM Zn	<0.001^d	311.7±6.5^ab	203.99±24.05^abc	54.76±7.80^c	7.93±0.66^abc
10 µM Cd 25 µM Zn	204.0±6.1^ab	356.4±3.8^a	169.66±9.78^c	55.43±6.15^c	10.63±1.36^a
10 µM Cd 50 µM Zn	209.0±6.5^ab	354.5±3.0^a	219.01±12.67^abc	55.52±5.07^c	10.04±0.54^ab
15 µM Cd 25 µM Zn	212.5±3.2^ab	261.1±21.0^bc	193.71±9.37^bc	59.94±3.58^abc	9.83±0.65^abc
15 µM Cd 50 µM Zn	235.7±3.9^ab	279.8±4.6^b	193.03±12.23^bc	62.70±3.63^abc	4.54±0.56^de

Values represent means ± standard errors (n = 6). Values marked with different letters indicate significantly different treatments (P<0.05) within seedling data set (LSD multiple test).