Absorption and Bio-Transformation of Selenium Nanoparticles by Wheat Seedlings (Triticum aestivum L.)

Hu, Ting; Li, Huafen; Li, Jixiang; Zhao, Guishen; Wu, Wenliang; Liu, Liping; Wang, Qi; Guo, Yanbin

doi:10.3389/fpls.2018.00597

Cited by 105 publications

(55 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In present work, it was found that the presence of AgNO 3 in the culture solution significantly decreased rice root SeNPs absorption by 60.4% (Fig. 3a), a finding that is consistent with those of our previous studies involving wheat, in which a decrease in SeNPs uptake of 92.5% was observed following SeNPs + AgNO 3 treatment [29]. Hence, based on the results of this study, it can be suggested that rice seedlings absorb SeNPs partially via aquaporin.…”

Section: Mechanisms Of Senps Uptake By Rice Seedlingssupporting

confidence: 93%

“…During the 72 h treatment period, selenite uptake rate was generally equal to that of selenate; however, both were much higher than of SeNPs (Table 1). This finding is partly supported by Hu et al, [29], who reported the influx rate for selenite was 2.5-fold higher than that for SeNPs. However, a comparison of selenite and selenate uptake rates in previous studies showed inconsistencies e.g., a similar uptake rate for selenite and selenate by wheat plants during a 24 h treatment period has been reported [18].…”

Section: Difference Between Senps and Inorganic Se That Related To Thsupporting

confidence: 70%

See 1 more Smart Citation

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

Wang¹,

Wang²,

Li³

et al. 2020

J Nanobiotechnol

Self Cite

View full text Add to dashboard Cite

Background: Selenium (Se) in soil mainly consists of selenite, selenate, and elemental Se. However, little is known about the mechanism involved in the uptake and biotransformation of elemental Se by plants. Results: In this study, the uptake, translocation, subcellular distribution and biotransformation of selenium nanoparticles (SeNPs) in rice (Oryza sativa L.), and a comparison with selenite and selenate, were investigated through hydroponic experiments. The study revealed that SeNPs could be absorbed by rice plants; and aquaporin inhibitor was responsible for a 60.4% inhibition of SeNP influx, while metabolic inhibitor was ineffective. However, the SeNPs uptake rate of rice roots was approximately 1.7 times slower than that of selenite or selenate. Under the SeNPs or selenite treatment, Se was primarily accumulated in roots rather than in shoots, whereas an opposite trend was observed with selenate treatment. Additionally, most of the absorbed Se was distributed in cell wall of the SeNPs or selenite treatedrice plants, while its proportion was the highest in soluble cytosol of the selenate treated-rice plants. The absorbed SeNPs or selenite was rapidly assimilated to organic forms, with SeMet being the most predominant species in both shoots and roots of the rice plants. However, following selenate treatment, Se(VI) remained as the most predominant species, and only a small amount of it was converted to organic forms. Conclusion: Therefore, this study provides a deeper understanding of the mechanisms associated SeNPs uptake and biotransformation within plants.

show abstract

Section: Mechanisms Of Senps Uptake By Rice Seedlingssupporting

confidence: 93%

Section: Difference Between Senps and Inorganic Se That Related To Thsupporting

confidence: 70%

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

Wang¹,

Wang²,

Li³

et al. 2020

J Nanobiotechnol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Additionally, the presence of Se(IV) suggested that selenite was not entirely transformed into other species, since its conversion is not irreversible in rice seedlings. Unlike the shoots, considerable amounts of various organic selenocompounds were detected in the roots, including SeCys 2 , MeSeCys, and SeMet ( Figure 6B); similar results were achieved for wheat by Huang et al (2017) and Hu et al (2018) and for pak choi by Yu et al (2019). The formation of these seleno-amino acids is known to occur in the chloroplasts of plants (Ng and Anderson, 1979;Brühl et al, 1996;Terry et al, 2000).…”

Section: Discussionsupporting

confidence: 72%

Selenite Uptake and Transformation in Rice Seedlings (Oryza sativa L.): Response to Phosphorus Nutrient Status

Wang

et al. 2020

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

Selenite and phosphate share similar uptake mechanisms, as a phosphate transporter is involved in the selenite uptake process. However, the mechanism by which selenium (Se) transformation in plants is mediated by phosphorus (P) remains unclear. In this hydroponic study, the absorption, translocation, and biotransformation of Se in selenitetreated rice (Oryza sativa L.) seedlings were investigated under varying P nutrient status. The results showed that P-deficient cultivation increased the Se concentration in roots with Se-only treatment by 2.1 times relative to that of the P-normal condition. However, co-treating roots with additional P caused the Se concentration to decline by 20 and 73% compared to Se treatment alone under P-normal and P-deficient cultivation, respectively. A similar pattern was also observed in Se uptake by rice roots. With an Se-transfer factor elevated by 4.4 times, the shoot Se concentration was increased by 44% with additional P supply compared to the concentration under Se-only treatment of P deficiency; however, no significant differences were observed regarding P-normal cultivation. P deficiency increased the Se percentage by 28% within the cell wall, but reduced it by 60% in the soluble fraction of Se-only treated roots relative to that of the P-normal condition. Contrarily, compared with the Se-only treatment under P deficiency, additional P supply enhanced Se storage in the root soluble fraction by 1.3 times. The opposite tendency was observed for rice shoots. Moreover, P deficiency reduced the proportion of SeMet by 22%, but increased MeSeCys by 1.3 times in Se-only treated roots compared to those under the P-normal condition. Interestingly, MeSeCys was not detected when additional P was added to the two cultivation conditions. Unlike in the roots, only SeMet was generally detected in the rice shoots. The results demonstrate that the P nutrient status strongly affects the Se biofortification efficiency in rice seedlings by altering the Se subcellular distribution and speciation.

show abstract

“…Moreover, recent reports point out the plant cell may differentially respond to the nano-based materials relative to the bulk counterparts [6,7,13]. The elemental red Se nano-substance (nSe) exhibits efficient antimicrobial properties, great bioactivity, considerable antioxidant capacity, and anti-proliferative effects [14]. The application of nSe in a dose-dependent manner associated with changes in growth, biochemistry, metabolism, and molecular program in diverse plant species, including Triticum aestivum [9], Brassica juncea [8], Melissa officinalis [6], sorghum [4], and peppermint [12].…”

Section: Introductionmentioning

confidence: 99%

Red elemental selenium nanoparticles mediated substantial variations in growth, tissue differentiation, metabolism, gene transcription, epigenetic cytosine DNA methylation, and callogenesis in bittermelon (Momordica charantia); an in vitro experiment

et al. 2020

View full text Add to dashboard Cite

To gain a better insight into the selenium nanoparticle (nSe) benefits/toxicity, this experiment was carried out to address the behavior of bitter melon seedlings to nSe (0, 1, 4, 10, 30, and 50 mgL-1) or bulk form (selenate). Low doses of nSe increased biomass accumulation, while concentrations of 10 mgL-1 and above were associated with stem bending, impaired root meristem, and severe toxicity. Responses to nSe were distinct from that of bulk in that the nano-type exhibited a higher efficiency to stimulate growth and organogenesis than the bulk. The bulk form displayed higher phytotoxicity than the nano-type counterpart. According to the MSAP-based analysis, nSe mediated substantial variation in DNA cytosine methylation, reflecting the epigenetic modification. By increasing the concentration of nSe, the expression of the WRKY1 transcription factor linearly up-regulated (mean = 7.9fold). Transcriptions of phenylalanine ammonia-lyase (PAL) and 4-Coumarate: CoA-ligase (4CL) genes were also induced. The nSe treatments at low concentrations enhanced the activity of leaf nitrate reductase (mean = 52%) in contrast with the treatment at toxic concentrations. The toxic concentration of nSe increased leaf proline concentration by 80%. The nSe supplement also stimulated the activities of peroxidase (mean = 35%) and catalase (mean = 10%) enzymes. The nSe-treated seedlings exhibited higher PAL activity (mean = 39%) and soluble phenols (mean = 50%). The nSe toxicity was associated with a disrupted differentiation of xylem conducting tissue. The callus formation and performance of the explants originated from the nSe-treated seedlings had a different trend than that of the control. This experiment provides new insights into the nSe-associated advantage/ cytotoxicity

show abstract

Absorption and Bio-Transformation of Selenium Nanoparticles by Wheat Seedlings (Triticum aestivum L.)

Cited by 105 publications

References 59 publications

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

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

Selenite Uptake and Transformation in Rice Seedlings (Oryza sativa L.): Response to Phosphorus Nutrient Status

Red elemental selenium nanoparticles mediated substantial variations in growth, tissue differentiation, metabolism, gene transcription, epigenetic cytosine DNA methylation, and callogenesis in bittermelon (Momordica charantia); an in vitro experiment

Contact Info

Product

Resources

About