In vitro exposed magnesium oxide nanoparticles enhanced the growth of legume Macrotyloma uniflorum

Sharma, Priya; Gautam, Ayushi; Winīta Kumāra,; Guleria, Praveen

In vitro exposed magnesium oxide nanoparticles enhanced the growth of legume Macrotyloma uniflorum

2022

Sharma, Priya | Gautam, Ayushi | Winīta Kumāra, | Guleria, Praveen

Nanoparticles interact with plants to induce a positive, negative, or neutral effect on their growth and development. In this study, we document the positive influence of magnesium oxide (MgO) nanoparticles (NPs) on the morpho-biochemical parameters of Macrotyloma uniflorum (horse gram). Horse gram is a protein and polyphenol-rich legume crop. It is an important part of the human diet and nutrition. When exposed to MgO-NPs, a significant increment in the shoot–root length, fresh biomass, and chlorophyll content of horse gram was evident. Furthermore, there was a 4–20 and 18–127% increase in the accumulation of carbohydrate and protein content on MgO-NP exposure. The antioxidant potential was enhanced by 5–19% on NP treatment as a result of the increase in the accumulation of total polyphenolics. Total phenols and flavonoids were enhanced by 7–20 and 50–84% in the presence of MgO-NPs. The enzyme activity of SOD, CAT, and APX was also enhanced in MgO-NP-exposed horse gram. The observed alterations were also justified by the Pearson correlation. Overall, the MgO-NP-induced morpho-biochemical alterations in horse gram indicated their probable role as a nano-fertilizer. However, it further warrants the need to extensively investigate the responses of various other plant types to MgO-NPs before industry scale application.

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