Nanoselenium Foliar Applications Enhance the Nutrient Quality of Pepper by Activating the Capsaicinoid Synthetic Pathway

Liu, Dong; Zhou, Chunran; Zhang, Jingbang; An, Quanshun; Wu, Yangliu; Li, Jiaqi; Pan, Canping

doi:10.1021/acs.jafc.0c03044

“…Moreover, TiO 2 NPs increased the essential oil content in Salvia officinalis [ 62 ], Mentha piperita [ 63 ] and Moldavian balm [ 25 ]. In addition, the application of Se NPs increased the synthesis of secondary metabolites through increases in the expression of biosynthesis pathway-related genes: Pal, 4CL, HCT, pAmt, Kas, Acl, Fat and AT3 in pepper [ 64 ], and Pal and 4CL in bitter melon plant [ 65 ]. The modulator roles of NPs on the pathways of plant secondary metabolites are not well-explained hitherto even though in this regard, Marslin et al [ 66 ] postulated that the penetration and/or fixation of NPs on the cell surface and/or within cells causes elevated levels of ROS.…”

Section: Discussionmentioning

confidence: 99%

Salt Stress Mitigation via the Foliar Application of Chitosan-Functionalized Selenium and Anatase Titanium Dioxide Nanoparticles in Stevia (Stevia rebaudiana Bertoni)

Sheikhalipour

¹

,

Esmaielpour

²

,

Gohari

³

et al. 2021

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High salt levels are one of the significant and major limiting factors on crop yield and productivity. Out of the available attempts made against high salt levels, engineered nanoparticles (NPs) have been widely employed and considered as effective strategies in this regard. Of these NPs, titanium dioxide nanoparticles (TiO2 NPs) and selenium functionalized using chitosan nanoparticles (Cs–Se NPs) were applied for a quite number of plants, but their potential roles for alleviating the adverse effects of salinity on stevia remains unclear. Stevia (Stevia rebaudiana Bertoni) is one of the reputed medicinal plants due to their diterpenoid steviol glycosides (stevioside and rebaudioside A). For this reason, the current study was designed to investigate the potential of TiO2 NPs (0, 100 and 200 mg L−1) and Cs–Se NPs (0, 10 and 20 mg L−1) to alleviate salt stress (0, 50 and 100 mM NaCl) in stevia. The findings of the study revealed that salinity decreased the growth and photosynthetic traits but resulted in substantial cell damage through increasing H2O2 and MDA content, as well as electrolyte leakage (EL). However, the application of TiO2 NPs (100 mg L−1) and Cs–Se NPs (20 mg L−1) increased the growth, photosynthetic performance and activity of antioxidant enzymes, and decreased the contents of H2O2, MDA and EL under the saline conditions. In addition to the enhanced growth and physiological performance of the plant, the essential oil content was also increased with the treatments of TiO2 (100 mg L−1) and Cs–Se NPs (20 mg L−1). In addition, the tested NPs treatments increased the concentration of stevioside (in the non-saline condition and under salinity stress) and rebaudioside A (under the salinity conditions) in stevia plants. Overall, the current findings suggest that especially 100 mg L−1 TiO2 NPs and 20 mg L−1 Cs–Se could be considered as promising agents in combating high levels of salinity in the case of stevia.

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“…These genes also upregulated the plant hormones BR, ABA, and JA in the root and leaves under Cd stress. In our previous study, nano-Se signi cantly increased the contents of genes related to JA and ABA in pepper fruit [22]. Low MeJA concentrations can mitigate the adverse effect of Cd by signi cantly increasing the level of JA observed at 48 h under 50 mg/L Cd and 50 mg/L Cd + 0.1 mmol/L MeJA treatment in the Capsicum frutescens var.…”

Section: Discussionmentioning

confidence: 79%

“…The method is a modi cation of previous research. [22] The roots and leaves were ground to a powder in liquid nitrogen. The samples (0.1 g) were then subjected to 1 mL of extraction solution that contained methanol: water: formic acid (80:19:1, v/v/v) using ultrasound for 10 min.…”

Section: Plant Hormone Analysesmentioning

confidence: 99%

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Nanoselenium Transformation And Inhibition of Cadmium Accumulation By Regulating The Lignin Biosynthetic Pathway And Plant Hormone Signal Transduction In Pepper Plants

Liu

¹

,

Zhou

²

,

Ma

³

et al. 2021

Preprint

Self Cite

0

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Selenium (Se) can promote the growth and resistance of agricultural crops as fertilizers, while the role of nano-selenium (nano-Se) against Cd remains unclear in pepper plants (Capsicum annuum L.). Biofortification with nano-Se observably restored Cd stress by decreasing the level of Cd in plant tissues and boosting the accumulation in biomass. The Se compounds transformed by nano-Se were primarily in the form of SeMet and MeSeCys in pepper tissues. Differential metabolites and the genes of plant signal transduction and lignin biosynthesis were measured by employing transcriptomics and determining target metabolites. The number of lignin-related genes (PAL, CAD, 4CL, and COMT) and contents of metabolites (sinapyl alcohol, phenylalanine, p-coumaryl alcohol, caffeyl alcohol, and coniferaldehyde) were remarkably enhanced by treatment with Cd1Se0.2, thus, maintaining the integrity of cell walls in the roots. It also enhanced signal transduction by plant hormones and responsive resistance by inducing the biosynthesis of genes (BZR1, LOX3, and NCDE1) and metabolites (brassinolide, abscisic acid, and jasmonic acid) in the roots and leaves. In general, this study can enable a better understanding of the protective mechanism of nano-Se in improving the capacity of plants to resist environmental stress.

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“…The method is a modification of previous research [ 22 ]. The roots and leaves were ground to a powder in liquid nitrogen.…”

Section: Methodsmentioning

confidence: 99%

Nanoselenium transformation and inhibition of cadmium accumulation by regulating the lignin biosynthetic pathway and plant hormone signal transduction in pepper plants

Li

¹

,

Zhou

²

,

Ma

³

et al. 2021

Self Cite

View full text Add to dashboard Cite

Selenium (Se) can promote the growth and resistance of agricultural crops as fertilizers, while the role of nano-selenium (nano-Se) against Cd remains unclear in pepper plants (Capsicum annuum L.). Biofortification with nano-Se observably restored Cd stress by decreasing the level of Cd in plant tissues and boosting the accumulation in biomass. The Se compounds transformed by nano-Se were primarily in the form of SeMet and MeSeCys in pepper tissues. Differential metabolites and the genes of plant signal transduction and lignin biosynthesis were measured by employing transcriptomics and determining target metabolites. The number of lignin-related genes (PAL, CAD, 4CL, and COMT) and contents of metabolites (sinapyl alcohol, phenylalanine, p-coumaryl alcohol, caffeyl alcohol, and coniferaldehyde) were remarkably enhanced by treatment with Cd1Se0.2, thus, maintaining the integrity of cell walls in the roots. It also enhanced signal transduction by plant hormones and responsive resistance by inducing the biosynthesis of genes (BZR1, LOX3, and NCDE1) and metabolites (brassinolide, abscisic acid, and jasmonic acid) in the roots and leaves. In general, this study can enable a better understanding of the protective mechanism of nano-Se in improving the capacity of plants to resist environmental stress.

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Nanoselenium Foliar Applications Enhance the Nutrient Quality of Pepper by Activating the Capsaicinoid Synthetic Pathway

Cited by 79 publications

References 33 publications

Salt Stress Mitigation via the Foliar Application of Chitosan-Functionalized Selenium and Anatase Titanium Dioxide Nanoparticles in Stevia (Stevia rebaudiana Bertoni)

Salt Stress Mitigation via the Foliar Application of Chitosan-Functionalized Selenium and Anatase Titanium Dioxide Nanoparticles in Stevia (Stevia rebaudiana Bertoni)

Nanoselenium Transformation And Inhibition of Cadmium Accumulation By Regulating The Lignin Biosynthetic Pathway And Plant Hormone Signal Transduction In Pepper Plants

Nanoselenium transformation and inhibition of cadmium accumulation by regulating the lignin biosynthetic pathway and plant hormone signal transduction in pepper plants

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