Roles of selenium in mineral plant nutrition: ROS scavenging responses against abiotic stresses

Lanza, Marcos R. V.; Reis, André Rodrigues dos

doi:10.1016/j.plaphy.2021.04.026

Cited by 168 publications

(101 citation statements)

References 73 publications

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“…Selenium has multiple beneficial effects on the plant growth at appropriate concentration, including the enhancement of antioxidant capacity and photosynthesis ( Jiang et al, 2021 ; Lanza et al, 2021a ); while excessive Se can be detrimental ( Lanza et al, 2021b ). Concerning its beneficial effects on plant growth and human health, plants can be strategically utilized to regulate the effects of Se on both.…”

Section: Introductionmentioning

confidence: 99%

Uptake and translocation mechanisms of different forms of organic selenium in rice (Oryza sativa L.)

et al. 2022

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Selenium (Se) is an essential trace element for human and animal health, and toward an understanding of the uptake and translocation of Se in plants is important from the perspective of Se biofortification. In this study, we conducted hydroponic experiments to investigate the mechanisms of organic Se [selenomethionine (SeMet) and selenomethionine-oxide (SeOMet)] uptake, translocation, and the interactions between SeMet and SeOMet in rice. We also investigated differences in the dynamics of organic and inorganic Se uptake by rice roots. Concentration-dependent kinetic results revealed that SeMet uptake during a 1 h exposure was 3.19–16.0 times higher than that of three other Se chemical forms, with uptake capacity (Vmax) values ordered as follows: SeMet>SeOMet>selenite>selenate. Furthermore, time-dependent kinetic analysis revealed that SeMet uptake by roots and content in shoots were initially clearly higher than those of SeOMet, although the differences gradually diminished with prolonged exposure time; while no significant difference was found in the transfer factor of Se from rice roots to shoots between SeMet and SeOMet. Root uptake of SeOMet was significantly inhibited by carbonyl cyanide 3-chlorophenylhydrazone (CCCP) (30.4%), AgNO3 (41.8%), and tetraethylammonium chloride (TEACl) (45.6%), indicating that SeOMet uptake is a metabolically active process, and that it could be mediated via aquaporins and K+ channels. Contrarily, SeMet uptake was insensitive to CCCP, although markedly inhibited by AgNO3 (93.1%), indicating that rice absorbs SeMet primarily via aquaporins. Furthermore, Se uptake and translocation in rice treated simultaneously with both SeMet and SeOMet were considerably lower than those in rice treated with SeMet treatment alone and notably lower than the theoretical quantity, indicating interactions between SeMet and SeOMet. Our findings provide important insights into the mechanisms underlying the uptake and translocation of organic Se within plants.

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Section: Introductionmentioning

confidence: 99%

Uptake and translocation mechanisms of different forms of organic selenium in rice (Oryza sativa L.)

et al. 2022

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“…•significantly influences the chlorophyll contents of plants under abiotic stress [42]. Studies conducted by Zhao et al [36] confirm that ROS accumulation damages the molecular membrane and chlorophyll contents of O. sativa under low-temperature stress.…”

Section: Discussionmentioning

confidence: 95%

Cold Acclimation Affects Physiological and Biochemical Characteristics of Betula platyphylla S. under Freezing Stress

Ritonga

Yan

Chen

et al. 2021

Forests

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Cold and freezing stress is one of the most harmful environmental stresses, especially in temperate and subtropical areas, that adversely affects plant growth, development, and yield production. Betula platyphylla Sukaczev, also known as white birch, is one of the most valuable, important, and widely distributed tree species in East Asia. This study explored the effects of cold acclimation (CA) in reducing the destructive effect of freezing stress in B. platyphylla seedlings. We measured the physiological and biochemical characteristics of B. platyphylla seedlings, such as chlorophyll content, electrolyte leakage (EL), malondialdehyde (MDA), antioxidant enzymes (such as superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT)), and proline content before and after freezing stress to observe the contribution of CA in reducing the detrimental effects of freezing stress. The results showed that CA increased physiological and biochemical characteristics of B. platyphylla seedlings before and after freezing stress, except for chlorophyll content. Antioxidant enzymes were significantly positively correlated with proline, MDA, and EL content, and negatively correlated with chlorophyll content. Moreover, histochemical detection (H2O2 and O2−) and cell death were revealed to be induced by cold stress in B. platyphylla seedlings. Furthermore, it was revealed that increased time and decreased temperature of the CA process significantly influenced the physiological and biochemical parameters. Overall, the CA process significantly reduced the detrimental effects of freezing stress compared to the control treatment in B. platyphylla seedlings. Taken together, these findings provide beneficial information toward understanding the mechanism of CA and freezing stress in B. platyphylla. Furthermore, the substantial activity of physiological and biochemical results could be used as selection criteria for screening time and temperature points of cold/freezing stress in further omics analyses. In addition, the combination of current study results, further omics analyses, and genetic engineering techniques directly contribute to sustainable forest management systems, tree plantations, and conservation of tree species, especially non-cold/non-freezing tolerant tree species.

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“…Among of them, mineral nutrition such as silicon (Si) has long been recognized as an important component of disease control practices, which impacts plant disease tolerance or resistance ( Datnoff et al, 2007 ; Fones et al, 2010 ; Yao et al, 2012 ; Fones and Preston, 2013 ; Hörger et al, 2013 ; Kaur et al, 2016 ; Morkunas et al, 2018 ; Cabot et al, 2019 ; Jali et al, 2019 ; Liu et al, 2022 ). Solid research evidences demonstrate that the amounts of trace element nutrient Se in plants improve the plant growth and increase the tolerance against biotic and abiotic stress ( Razak et al, 1991 ; Poschenrieder et al, 2006 ; Boyd, 2007 ; Freeman et al, 2007 ; Trumble and Sorensen, 2008 ; Pilon-Smits et al, 2009 ; Zhao and McGrath, 2009 ; Zhu et al, 2009 ; Winkel et al, 2011 ; Wu et al, 2015 ; Hossain et al, 2021 ) and appropriate Se can significantly enhance the antioxidant enzyme activities in plants and reduce the activities of reactive oxygen species (ROS) and also the levels of lipid peroxidation, which could enhance the antioxidant enzyme activities in plants ( Feng et al, 2013 ; Lanza et al, 2021 ). Selenium could control the Sclerotinia stem rot disease of plants by regulating the soil microorganism community ( Liu et al, 2019a ).…”

Section: Discussionmentioning

confidence: 99%

Synergistic Effect of Melatonin and Selenium Improves Resistance to Postharvest Gray Mold Disease of Tomato Fruit

Zang

et al. 2022

Front. Plant Sci.

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Melatonin (MT) is a ubiquitous hormone molecule that is commonly distributed in nature. MT not only plays an important role in animals and humans but also has extensive functions in plants. Selenium (Se) is an essential micronutrient for animals and humans, and is a beneficial element in higher plants at low concentrations. Postharvest diseases caused by fungal pathogens lead to huge economic losses worldwide. In this study, tomato fruits were treated with an optimal sodium selenite (20 mg/L) and melatonin (10 μmol/L) 2 h and were stored for 7 days at room temperature simulating shelf life, and the synergistic effects of Se and MT collectively called Se-Mel on gray mold decay in tomato fruits by Botrytis cinerea was investigated. MT did not have antifungal activity against B. cinerea in vitro, while Se significantly inhibited gray mold development caused by B. cinerea in tomatoes. However, the interaction of MT and Se showed significant inhibition of the spread and growth of the disease, showing the highest control effect of 74.05%. The combination of MT with Se treatment enhanced the disease resistance of fruits by improving the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as increasing the gene expression level of pathogenesis-related (PR) proteins. Altogether, our results indicate that the combination of MT and Se would induce the activation of antioxidant enzymes and increase the expression of PR proteins genes that might directly enhance the resistance in tomato fruit against postharvest pathogenic fungus B. cinerea.

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Roles of selenium in mineral plant nutrition: ROS scavenging responses against abiotic stresses

Cited by 168 publications

References 73 publications

Uptake and translocation mechanisms of different forms of organic selenium in rice (Oryza sativa L.)

Uptake and translocation mechanisms of different forms of organic selenium in rice (Oryza sativa L.)

Cold Acclimation Affects Physiological and Biochemical Characteristics of Betula platyphylla S. under Freezing Stress

Synergistic Effect of Melatonin and Selenium Improves Resistance to Postharvest Gray Mold Disease of Tomato Fruit

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