Copper oxide nanoparticles biosynthetized improve germination and bioactive compounds in wheat sprouts

Abstract

Metal nanoparticles have many positive effects in improving crop production and productivity and allow for increased germination and rapid crop establishment under field conditions. The metallic nanoparticles applied in this study were copper oxide nanoparticles (CuONPs) biosynthesized using orange peel (Citrus X sinensis) as a reducing agent to avoid or reduce toxicity in wheat seeds and sprouts. This study determined the effect of CuONPs on germination, radicle and plumule length, as well as the production of phytochemical compounds in wheat sprouts. The seeds were treated with suspensions of CuONPs at the following concentrations: 0, 0.5, 1, 2, 4 and 6 mg mL-1. The results indicate that the use of low doses of CuONPs (0.5 mg mL-1), improved germination, vigor, plumule and radicle length, in addition to increasing the biosynthesis of phytochemical compounds in wheat shoots. A high concentration of CuONPs (6 mg mL-1) causes inhibitory effects due to Cu accumulation and phytotoxicity in plant tissue. The use of CuONPs for green synthesis is a viable alternative to obtain beneficial effects in germination and seedling development, as well as greater secondary metabolite production.

Effects of Copper Compounds on Phenolic Composition of the Common and Tartary Buckwheat Seedlings

“…In contrast to our findings, research in wheat sprouts indicated that small amounts (0.5 mg/mL) of CuO NPs increased the radicle and plumule length, while higher concentrations (6 mg/mL) had inhibitory effects due to Cu accumulation and phytotoxicity in plant tissue [50]. NPs of CuO reduced the root length of salad and alfalfa [51] and rice [43], inducing backwardness of root growth, greater lignification, and cytotoxicity in root cells of soybean [41].…”

CuO-NPs Improve Biosynthesis of Bioactive Compounds in Lettuce

“…The CuO-NPs were donated by the Centro de Investigación en Química Aplicada (CIQA), Saltillo, Coahuila, México. The nanoparticle size was 95 nm, hemispherical morphology, dark-looking black-brown powder, with a purity of 99.8%, and they were obtained by green synthesis [ 56 ].…”

The Effect of Functionalized Multiwall Carbon Nanotubes with Fe and Mn Oxides on Lactuca sativa L.

“…The literature is quite limited, and most articles focus on the effect of nanomaterials on seed germination [ 26 , 27 , 28 ] and on plant growth parameters [ 29 , 30 ] and less on the effect on bioactive compounds or mineral composition [ 12 , 16 ]. Thus, the aim of our study was to evaluate the impact of Fe and Mn oxides functionalized MWCNTs, as well as of the Fe and Mn oxides, on lettuce ( Lactuca sativa L.) growth, bioactive compounds and mineral accumulation.…”