Selenium biofortification enhances the growth and alters the physiological response of lamb's lettuce grown under high temperature stress

Silver is one of the most toxic heavy metals for plants, inducing various toxic symptoms and metabolic changes. Here, the impact of Ag(I) on Carlina acaulis physiology and selected metabolites was studied using two Ag concentrations (1 or 10 µM) after 14 days of exposure. The higher concentration of Ag(I) evoked reduction of growth, while 1 µM Ag had a growth-promoting effect on root biomass. The translocation factor (<0.04) showed that Ag was mainly retained in the roots. The 1 µM Ag concentration increased the level of low-molecular-weight organic acids (LMWOAs), while 10 µM Ag depleted these compounds in the roots. The increased concentration of Ag(I) elevated the accumulation of phytochelatins (PCs) in the roots and reduced glutathione (GSH) in the shoots (but not in the roots). At 1 µM, Ag(I) elevated the level of phenolic and triterpene acids, while the 10 µM Ag treatment increased the carlina oxide content in the roots. The obtained results indicate an alteration of metabolic pathways of C. acaulis to cope with different levels of Ag(I) stress. Our data imply that the intracellular binding of Ag(I) and nonenzymatic antioxidants contribute to the protection against low concentrations of Ag ions.

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“…Hydrogen peroxide (H 2 O 2 ) in the C. acaulis leaves was visualized using the 3′,3-diaminobenzidine method [51].…”

Section: Methodsmentioning

confidence: 99%

Metabolic Changes Induced by Silver Ions in Carlina acaulis

Dresler

Hawrylak-Nowak

Strzemski

et al. 2019

Plants

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“…In horticultural vegetables, Se fertilization is ascertained to augment the antioxidant activity, nitrogen and S assimilation, accumulation of pigments (carotenoids and anthocyanins), soluble phenols, and ascorbic acid (Dall’Acqua et al 2019 ; Hawrylak-Nowak et al 2008 2018 ; Mimmo et al 2017 ; Schiavon et al 2013 2016 ; Ríos et al 2010 ). Enhanced production of essential oils, hydroxycinnamic acids, total phenolics, anthocyanin and antioxidant activity has been recently reported by Skrypnik et al ( 2019 ) in sweet basil ( Ocimum basilicum L.) leaves, while increased accumulation of flavonoid compounds, especially naringenin chalcone and kaempferol, and several amino acids except proline, was observed in Se-biofortified tomato fruits and radish roots, respectively (Schiavon et al 2013 2016 ).…”

Section: Impact Of Se Biofortification On Food Crop Nutritional Traitmentioning

confidence: 99%

Selenium biofortification in the 21st century: status and challenges for healthy human nutrition

et al. 2020

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Background Selenium (Se) is an essential element for mammals and its deficiency in the diet is a global problem. Plants accumulate Se and thus represent a major source of Se to consumers. Agronomic biofortification intends to enrich crops with Se in order to secure its adequate supply by people. Scope The goal of this review is to report the present knowledge of the distribution and processes of Se in soil and at the plant-soil interface, and of Se behaviour inside the plant in terms of biofortification. It aims to unravel the Se metabolic pathways that affect the nutritional value of edible plant products, various Se biofortification strategies in challenging environments, as well as the impact of Se-enriched food on human health. Conclusions Agronomic biofortification and breeding are prevalent strategies for battling Se deficiency. Future research addresses nanosized Se biofortification, crop enrichment with multiple micronutrients, microbial-integrated agronomic biofortification, and optimization of Se biofortification in adverse conditions. Biofortified food of superior nutritional quality may be created, enriched with healthy Se-compounds, as well as several other valuable phytochemicals. Whether such a food source might be used as nutritional intervention for recently emerged coronavirus infections is a relevant question that deserves investigation.

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“…Biofortification is the process that increases the bioavailable content of targeted elements in edible plant parts through agricultural intervention or genetic selection (White and Broadley, 2005). In this perspective, recent works have demonstrated that Se fertilization increases the content of this element in a wide range of crops including rice (Chen et al, 2002), wheat (Lyons et al, 2004), radish (Pedrero et al, 2006; Schiavon et al, 2016), spinach (Ferrarese et al, 2012), potato (Turakainen et al, 2004), bean (Hermosillo-Cereceres et al, 2011), soybean (Yang et al, 2003), pea (Jerše et al, 2018), tomato (Schiavon et al, 2013), rocket (Dall’Acqua et al, 2019), lamb’s lettuce (Hawrylak-Nowak et al, 2018), and lettuce (Businelli et al, 2015; Esringu et al, 2015; Smolen et al, 2016a; Silva et al, 2017; Silva et al, 2018a). Se fertilization is a relatively low-cost approach to the prophylaxis of consumers against nutrient deficiency.…”

Section: Introductionmentioning

confidence: 99%

Combating Micronutrient Deficiency and Enhancing Food Functional Quality Through Selenium Fortification of Select Lettuce Genotypes Grown in a Closed Soilless System

et al. 2019

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Selenium (Se) is an essential trace element for human nutrition and a key component of selenoproteins having fundamental biological and nutraceutical functions. We currently examined lettuce biofortification with Se in an open-gas-exchange growth chamber using closed soilless cultivation for delivering Se-rich food. Morphometric traits, minerals, phenolic acids, and carotenoids of two differently pigmented Salanova cultivars were evaluated in response to six Se concentrations (0–40 μM) delivered as sodium selenate in the nutrient solution. All treatments reduced green lettuce fresh yield slightly (9%), while a decrease in red lettuce was observed only at 32 and 40 μM Se (11 and 21% respectively). Leaf Se content increased in both cultivars, with the red accumulating 57% more Se than the green. At 16 μM Se all detected phenolic acids increased, moreover a substantial increase in anthocyanins (184%) was recorded in red Salanova. Selenium applications slightly reduced the carotenoids content of green Salanova, whereas in red Salanova treated with 32 μM Se violaxanthin + neoxanthin, lutein and β-cryptoxanthin spiked by 38.6, 27.4, and 23.1%, respectively. Lettuce constitutes an ideal target crop for selenium biofortification and closed soilless cultivation comprises an effective tool for producing Se-enriched foods of high nutraceutical value.

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Selenium biofortification enhances the growth and alters the physiological response of lamb's lettuce grown under high temperature stress

Cited by 73 publications

References 51 publications

Metabolic Changes Induced by Silver Ions in Carlina acaulis

Metabolic Changes Induced by Silver Ions in Carlina acaulis

Selenium biofortification in the 21st century: status and challenges for healthy human nutrition

Combating Micronutrient Deficiency and Enhancing Food Functional Quality Through Selenium Fortification of Select Lettuce Genotypes Grown in a Closed Soilless System

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