Effects of sulfur supply on cadmium transfer and concentration in rice at different growth stages exposed to sulfur-deficient but highly cadmium-contaminated soil

Chemical and Biological Technologies in Agriculture

Table 2 Effects of sulfur addition on content of GSH and Cys in the stem and leaf of rice exposed to Cd-contaminated soil

		Booting	Leaf	Filling	Leaf	Grain
		Stem	Leaf	Stem	Leaf	Grain
GSH(mg·kg⁻¹)	–S	216.3 ± 17.1a	212.7 ± 4.7b	214.9 ± 17.0a	343.6 ± 7.3a	223.8 ± 7.1a
GSH(mg·kg⁻¹)	+ S	185.2 ± 8.6b	316.5 ± 22.1a	194.4 ± 3.8a	295.4 ± 18.5b	206.4 ± 7.8b
Cys (mg·kg⁻¹)	–S	310.8 ± 21.2a	630.2 ± 22.3b	396.9 ± 19.6a	1081.1 ± 41.3a	277.8 ± 26.8b
Cys (mg·kg⁻¹)	+ S	286.1 ± 4.5a	934.2 ± 62.8a	446.9 ± 32.4a	983.5 ± 5.6b	395.5 ± 19.4a
Difference of indexes among two growth stages
GSH	–S	ns	**
GSH	+ S	ns	ns
Cys	–S	**	**
Cys	+ S	**	ns

Values are mean ± standard deviations. Values followed by different letters within a column indicate significance at p < 0.05 (LSD) for sulfur application at the same growth stage
ns no difference, –S without S supply, + S with S supply
^**indicate difference of index between booting and filling stage at p < 0.01