Influence of selenite and selenate on growth, leaf physiology and antioxidant defense system in wheat (<scp>Triticum aestivum</scp> L.)

Kaur, Manpreet; Sharma, Sucheta

doi:10.1002/jsfa.9117

Cited by 24 publications

(4 citation statements)

References 57 publications

(125 reference statements)

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“…Low-dose selenite treatment (0.5 and 1 mg·kg −1 ) stimulated plant growth by enhancing root activities, but high Se levels (50 and 100 mg·kg -1 ) decreased root activity [ 91 ]. Different Se species as well as their application rates affect the crop yield and biomass of plants [ 33 , 92 , 93 ]. Previous studies showed that 2 mg·kg –1 Se (VI) significantly inhibited wheat plant growth and decreased plant height compared to 0.5 mg·kg –1 Se (IV) treatment [ 94 ].…”

Section: Discussionmentioning

confidence: 99%

Selenium uptake, translocation, subcellular distribution and speciation in winter wheat in response to phosphorus application combined with three types of selenium fertilizer

Nie

Shi

et al. 2023

BMC Plant Biol

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Background Selenium (Se) deficiency causes a series of health disorders in humans, and Se concentrations in the edible parts of crops can be improved by altering exogenous Se species. However, the uptake, transport, subcellular distribution and metabolism of selenite, selenate and SeMet (selenomethionine) under the influence of phosphorus (P) has not been well characterized. Results The results showed that increasing the P application rate enhanced photosynthesis and then increased the dry matter weight of shoots with selenite and SeMet treatment, and an appropriate amount of P combined with selenite treatment increased the dry matter weight of roots by enhancing root growth. With selenite treatment, increasing the P application rate significantly decreased the concentration and accumulation of Se in roots and shoots. P1 decreased the Se migration coefficient, which could be attributed to the inhibited distribution of Se in the root cell wall, but increased distribution of Se in the root soluble fraction, as well as the promoted proportion of SeMet and MeSeCys (Se-methyl-selenocysteine) in roots. With selenate treatment, P0.1 and P1 significantly increased the Se concentration and distribution in shoots and the Se migration coefficient, which could be attributed to the enhanced proportion of Se (IV) in roots but decreased proportion of SeMet in roots. With SeMet treatment, increasing the P application rate significantly decreased the Se concentration in shoots and roots but increased the proportion of SeCys2 (selenocystine) in roots. Conclusion Compared with selenate or SeMet treatment, treatment with an appropriate amount of P combined with selenite could promote plant growth, reduce Se uptake, alter Se subcellular distribution and speciation, and affect Se bioavailability in wheat.

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Section: Discussionmentioning

confidence: 99%

Selenium uptake, translocation, subcellular distribution and speciation in winter wheat in response to phosphorus application combined with three types of selenium fertilizer

Nie

Shi

et al. 2023

BMC Plant Biol

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“…Furthermore, selenate is absorbed by sulfur transporters and distributed within the plants in a rather unchanged chemical form at much a faster rate as compared to selenite. Moreover, selenite is more rapidly bioconverted to protein seleno-amino acids and thus more bioaccumulated in comparison to selenate, which affects the higher phytotoxicity of selenite [30].…”

Section: Selenium Concentration In the Solution (Mg L −1 )mentioning

confidence: 99%

Selected antioxidant properties of alfalfa, radish, and white mustard sprouts biofortified with selenium

Woch

Hawrylak-Nowak

2019

Acta Agrobot

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The aim of this study was to evaluate the effect of application of two mineral selenium forms (selenite Se4+ or selenate Se6+) on the accumulation of this element by alfalfa (Medicago sativa), radish (Raphanus sativus var. sativus), and white mustard (Sinapis alba) at early stages of plant development for biofortification of sprouts with selenium, and the impact of this process on selected phytochemical traits. For this purpose, selenium-biofortified sprouts were analyzed for the contents of l-ascorbic acid and anthocyanin as well as their antioxidant activity. Additionally, the concentration of selenium in the biomass was determined. It was demonstrated that the application of selenium contributed to increased bioaccumulation of the element in the sprouts, constituting an effective method for the production of selenium-biofortified food. Selenate was accumulated less efficiently than was selenite. It was found that a concentration of 20 µmol L−1 Se in the form of both selenate and selenite was an optimal dose for enrichment of the sprouts with this element. Biofortification of the experimental species with selenium (20 µmol L−1) generally increased accumulation of anthocyanins but did not significantly alter the level of l-ascorbic acid and free radical scavenging activity. Therefore, it seems that consumption of selenium-biofortified sprouts can be an effective way to supplement low-selenium diets with this element.

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“…On the other hand, the increased activity of CAT in the shoots after exposure to higher concentrations of Se is a critical H 2 O 2 detoxification mechanism. This is supported by the research of Kaur and Sharma [60], which determined the presence of several new CAT isoenzymes in the wheat leaf after exposure to higher doses of selenate and selenite. Silva et al [101] noticed that both selenate and selenite increased CAT activity in leaves of Vigna unguiculata (L.) Walp., but not equally in all treatments.…”

Section: Se Effect On Wheat Oxidative Status and Antioxidative Responsementioning

confidence: 68%

“…Li et al [58] detected selenite and organic forms such as MeSeCys in the root extracts and xylem sap from selenite-treated plants. Differences in Se accumulation were determined by Kaur and Sharma [60] in wheat leaves, whereby after exposure to selenate, up to 60-fold higher concentrations of Se were obtained compared with selenite, and they concluded that selenate is a more mobile form. It is important to emphasize that, in our experiment, selenate caused a more significant increase in Se concentration in the shoots than in the roots, except after the application of the highest concentration, where selenate was less translocated into the shoots.…”

Section: Se Effect On Its Accumulation In Wheatmentioning

confidence: 97%

Morpho-Physiological and Antioxidative Responses of Wheat Seedlings to Different Forms of Selenium

Vuković Popović,

Štolfa Čamagajevac,

Vuković

et al. 2023

Agriculture

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Selenium (Se) deficiency in human and animal nutrition is primarily due to low levels of Se in soils. It can be prevented by enriching crops, such as wheat, with Se through agronomic biofortification. Although Se is not essential for plants, it shows a dual effect on their metabolism depending on its concentration. This study aimed to elucidate the impact of five different concentrations (0.4, 4, 20, 40, and 400 mg/kg) of selenate and selenite on the oxidative status and antioxidative response of wheat (Triticum aestivum L., cv. Kraljica) shoots and roots. According to morpho-physiological analyses, selenite was found to have a lower toxicity threshold than selenate. The measurement of oxidative stress biomarkers showed that Se did not cause oxidative damage to wheat seedlings due to the activation of detoxification mechanisms at the biochemical level, which depended on the type of tissue, concentration, and form of applied Se. Treatment with 20 mg/kg of selenate can be recommended for wheat seedling biofortification due to a sufficient increase in Se accumulation in shoots without signs of toxicity. These results contribute to a better understanding of wheat seedlings’ physiological and biochemical responses to Se and the development of more effective biofortification strategies.

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Influence of selenite and selenate on growth, leaf physiology and antioxidant defense system in wheat (Triticum aestivum L.)

Cited by 24 publications

References 57 publications

Selenium uptake, translocation, subcellular distribution and speciation in winter wheat in response to phosphorus application combined with three types of selenium fertilizer

Selenium uptake, translocation, subcellular distribution and speciation in winter wheat in response to phosphorus application combined with three types of selenium fertilizer

Selected antioxidant properties of alfalfa, radish, and white mustard sprouts biofortified with selenium

Morpho-Physiological and Antioxidative Responses of Wheat Seedlings to Different Forms of Selenium

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