The Effect of Copper And Zinc Nanoparticles on the Growth Parameters, Contents of Ascorbic Acid, and Qualitative Composition of Amino Acids and Acylcarnitines in Pistia stratiotes L. (Araceae)

Abstract

The paper covers the research of copper and zinc nanoparticle effect on the content of ascorbic acid, and quantitative and qualitative composition of amino acids and acylcarnitines in Pistia stratiotes L. plants. Plant exposition to copper nanoparticles led to the decrease in (1) the amount of ascorbic acid, (2) the total content of amino acids (by 25 %), and (3) the amount of all studied amino acids except for the glycine amino acid. At this, the amount of 5-oxoproline, arginine, leucine, ornithine, phenylalanine, proline, serine, and tyrosine was two times lower than in control plants. The reduction of the contents of 8 out of 12 investigated acylcarnitines (namely C0, C2, C3, C5, C6, C8, C16, C18:1) was observed in plants under the influence of copper nanoparticles. The result of plants incubation with zinc nanoparticles was the decrease in (1) the amount of ascorbic acid, (2) the total content of amino acids (by 15 %), (3) the content of leucine, methionine, phenylalanine, proline, and tyrosine (more than twice), and (4) the content of 10 acylcarnitines (C0, C2, C3, C4, C5, C10, C16, C18, C18:1, C18:2). The observed reduction in amino acid contents may negatively affect plants adaptive reactions associated with de novo synthesis of stress proteins. At the same time, the decrease in the content of acylcarnitines, responsible for fatty acid transportation, may lead to the changes in the activity and direction of lipid metabolism in plants and reduce plant’s ability to use free fatty acids as the oxidation substrate for cell reparation.

Study on the Nutritional Composition of Oil Cakes of Different Released and Line Cultivars of Mustard and Rapeseed (Brassica spp.)

“…Carbohydrate is positively correlated with Ca (0.642 ** ). In the present study though the protein content was high in most of the treatment but it was negatively correlated with Ca and Cu content but the result was disagreed with Ashok et al (2016) and Olkhovych et al (2016) who found that protein content was positively correlated with copper in different sorghum species and in Pistia stratiotes respectively. Iron content was positively correlated with Mg and Ca suggesting the possibility of combining selection for both micronutrients the result agreed with Ashok et al (2016) who reported that Mg and Ca content increases with Iron in different sorghum species.…”

Zinc Oxide Nanoparticles Induce Changes in the Antioxidant Systems and Macromolecules in the Solanum nigrum Callus

“…The noticed increase in protein concentration in plants exposed to Cu and Zn NPs by Olkhovych et al (2016) was confirmed with the present results that showed an increase in the soluble protein content in the S. nigrum callus under different concentrations of ZnO NPs. Furthermore, Priyanka & Venkatachalam (2016) suggested that improvements in the soluble protein content may protect cells from oxidative stress caused by ZnO NPs.…”

Foliar Applications of Biostimulants Promote Growth, Yield and Fruit Quality of Strawberry Plants Grown under Nutrient Limitation

“…Finally, a reduction in ascorbic acid level in fruits treated with biostimulants containing zinc (ZIN and SIL) was recorded (Table 11). This effect might be due to the inhibitory action of selected metals (e.g., zinc and copper) on the enzyme activity of ascorbic acid metabolism as also shown by Olkhovych et al [80] on other species.…”