Selenium Species in Selenium-Enriched and Drought-Exposed Potatoes

Cuderman, Petra; Kreft, Ivan; Germ, Mateja; Kovačević, Milojko; Stibilj, Vekoslava

doi:10.1021/jf8014969

Cited by 63 publications

(32 citation statements)

References 19 publications

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“…Previous studies have shown that the main organic Se compound in the leaves, flower structures and roots of Se-enriched broccoli (B. oleracea) was selenomethylselenocysteine (SeMeSeCys) and not SeMet (Pedrero et al 2008). Similarly, SeMeSeCys was the main Se compound also in Seenriched garlic, onion and leek, whereas SeMet and selenate were the predominant Se species in cereal grains ) and potato tubers (Cuderman et al 2008). In Brassica, the reported Se specification studies have been done with fresh leaf material and there are no other reports on Se species composition in seeds.…”

Section: Discussionmentioning

confidence: 97%

Agronomic biofortification of Brassica with selenium—enrichment of SeMet and its identification in Brassica seeds and meal

Seppänen¹,

Kontturi²,

Heras

et al. 2010

Plant Soil

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Selenium (Se) is an essential micronutrient and is circulated to the food chain through crops. Brassica species are efficient in Se accumulation and thus, good species for Se biofortification purposes. The residual fraction obtained after oil processing of Brassica seeds, the meal, is an important protein source in animal diets and used in feed concentrates. The accumulation of soil or foliar applied Se in the seeds and meal of Brassica napus and B. rapa as well as its effects on growth and yield formation was studied in two field experiments. Also, a HPLC-ICP-MS based method for the identification and quantification of Se species in Brassica seeds and meal was developed. Selenium application did not affect the yield or oil content. High accumulation of Se in the seeds and meal (1.92-1.96 μg Se g −1 ) was detected. Biotransformation of inorganic Se was evaluated by using HPLC-ICP-MS previous enzymatic hydrolysis for species extraction. The Se speciation studies showed that up to 85% of the total Se was SeMet whereas other Se-species were not detected. We conclude that the agronomic biofortification of Brassica species can improve the nutritive quality of the protein rich meal fraction as it contains significant amount of SeMet.

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Section: Discussionmentioning

confidence: 97%

Agronomic biofortification of Brassica with selenium—enrichment of SeMet and its identification in Brassica seeds and meal

Seppänen¹,

Kontturi²,

Heras

et al. 2010

Plant Soil

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“…Turakainen et al (2006) reported that most of the Se in potato tubers is a component of the protein fraction (49-65%) and that the concentration is lower than in leaves. Cuderman et al (2008) reported that 30% of total Se in potato tubers is a constituent of protein. Munshi et al (1990) discovered that selenite (SeO 3 2-) increased the protein content in tubers and reduced the content of free amino acids.…”

mentioning

confidence: 99%

Effect of foliar application of selenium on the content of selected amino acids in potato tubers (Solanum tuberosum L.)

Ježek¹,

Hlušek²,

Lošák³

et al. 2011

Plant Soil Environ.

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Selenium (Se) is an important element associated with the enhancement of antioxidant activity in organisms. Potato is very suitable for fertilisation with Se (biofortification). The experiment was performed to examine the effect of foliar application of Se as sodium selenite (200 or 400 g Se/ha) at the tuberisation stage on a spectrum of amino acids in tubers of varieties. The trends of amino acids were consistent in both years of the study. Application of Se increased the relative content of total essential (EAA) and non-essential (NEAA) amino acids relative to the controls (Karin: EAA 16.81-21.73% and NEAA 14.18-18.63%; Ditta: EAA 4.71-13.00% and NEAA 5.78-6.49%). The increase in the content of phenylalanine (Phe) was particularly significant (up to 48.9%) when also the contents of aspartic acid (Asp), glutamic acid (Glu), threonine (Thr), and tyrosine (Tyr) increased significantly compared with the controls. The results of changes in the content of isoleucine (Ile), leucine (Leu), lysine (Lys), methionine (Met), valine (Val), alanine (Ala), arginine (Arg), proline (Pro), cysteine (Cys), glycine (Gly), histidine (His), and serine (Ser) were also discussed. The highest dose of selenium is shown as a stress factor. Its toxic effects resulted in a change of amino acid contents.

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“…We used 1 mM and 10 mM citrate buffers in 2% methanol as the successive mobile phases for anion-exchange chromatography, and 3 mM pyridine buffer in 2% methanol as mobile phase for cation-exchange chromatography. The method and optimal operating conditions have been described in detail elsewhere (Cuderman et al 2008).…”

Section: Selenium Species Determinationmentioning

confidence: 99%

Selenium uptake and Se compounds in Se-treated buckwheat

Golob¹,

Germ²,

Kreft³

et al. 2016

Acta Botanica Croatica

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-In fi eld experiments, tartary buckwheat and hybrid buckwheat were foliarly sprayed with an aqueous solution of sodium selenate (20 mg Se L -1 ). In treated plants, the selenium content was signifi cantly higher than in controls, irrespective of the plant part and taxon of buckwheat. The highest average Se concentrations in hybrid and tartary buckwheat were found in seeds. The main Se species found in seeds was Semethionine. Selenium-sprayed plants had higher photochemical effi ciency of photosystem II in both taxa and higher electron transport system activity in hybrid buckwheat, suggesting a positive effect of Se on physiological characteristics. Because of the concentration of Se in both buckwheat taxa and selenomethionine as the dominant species of Se, Se-enriched buckwheat is a potential source of dietary Se for animals and humans.

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Selenium Species in Selenium-Enriched and Drought-Exposed Potatoes

Cited by 63 publications

References 19 publications

Agronomic biofortification of Brassica with selenium—enrichment of SeMet and its identification in Brassica seeds and meal

Agronomic biofortification of Brassica with selenium—enrichment of SeMet and its identification in Brassica seeds and meal

Effect of foliar application of selenium on the content of selected amino acids in potato tubers (Solanum tuberosum L.)

Selenium uptake and Se compounds in Se-treated buckwheat

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