Uptake, translocation and biotransformation of selenium nanoparticles in rice seedlings (Oryza sativa L.)

Table 2 Content and percentage of Se species in rice tissues

Se species	10 μM SeNPs (μg g⁻¹ FW)	30 μM SeNPs (μg g⁻¹ FW)	10 μM selenite (μg g⁻¹ FW)	10 μM selenate (μg g⁻¹ FW)
Shoots
SeCys₂	ND	ND	ND	0.10 ± 0.00 a (1.10%)
MeSeCys	ND	0.10 ± 0.01 a (15.69%)	0.11 ± 0.01 a (3.68%)	0.09 ± 0.00 a (0.98%)
Se(IV)	ND	ND	ND	0.05 ± 0.00 a (0.56%)
SeMet	0.43 ± 0.02 c (95.18%)*	0.39 ± 0.02 c (63.19%)	3.10 ± 0.15 b (102.16%)	3.39 ± 0.09 a (36.83%)
Se(VI)	ND	ND	0.13 ± 0.01 b (4.29%)	7.09 ± 0.06 a (77.06%)
Roots
SeCys₂	0.16 ± 0.00 c (0.93%)	0.33 ± 0.03 b (0.80%)	0.49 ± 0.02 a (2.17%)	0.13 ± 0.01 c (1.72%)
MeSeCys	0.17 ± 0.02 c (0.97%)	0.32 ± 0.02 b (0.79%)	0.48 ± 0.02 a (2.15%)	ND
Se(IV)	0.07 ± 0.01 b (0.38%)	0.07 ± 0.00 b (0.18%)	0.36 ± 0.01 a (1.61%)	ND
SeMet	1.12 ± 0.03 b (6.31%)	1.05 ± 0.06 b (2.56%)	5.94 ± 0.06 a (26.58%)	0.42 ± 0.00 c (5.59%)
Se(VI)	ND	ND	0.13 ± 0.00 b (0.59%)	4.91 ± 0.18 a (65.94%)

Data presented as mean ± SE (n = 3). Different letters in the same line indicate significant differences between the treatments at p < 0.05 according to the Duncan’s test
SeCys₂ selenocystine, MeSeCys Se-methyl-selenocysteine, Se(IV) selenite, SeMet selenomethionine, Se(VI) selenate, ND not detected
*Values in parentheses represent Se species percentage in rice shoots or roots calculated using the expression: Se species content / total tissue content × 100%

ISSN: 1477-3155