» Articles » PMID: 36647345

ZnO Nanoparticles As Potential Fertilizer and Biostimulant for Lettuce

Abstract

Zn is an indispensable nutrient for crops that usually presents low bioavailability. Different techniques have been proposed to improve the bioavailability of Zn, including the use of nanofertilizers. The objective of the study was to evaluate the applications of drench (D) and foliar (F) ZnO nanoparticles (NZnO) compared to those of ionic Zn (ZnSO) in lettuce. The plants cv. Great Lakes 407 was produced in pots of 4 L with perlite-peat moss (1:1) under greenhouse conditions. The treatments consisted of NZnO applications that replaced the total Zn provided with a Steiner solution, as follows: Zn (100%D) (control); Zn (50%D+50%F); NZnO (100%D); NZnO (50%D+50%F); NZnO (75%D); NZnO (50%D); NZnO (75%F) and NZnO (50%F). Four applications of Zn were made with a frequency of 15 days. 75 days after transplant (DAP), the fresh and dry biomass, chlorophyll a, b, and β-carotene, phenolics, flavonoids, antioxidant capacity, vitamin C, glutathione, HO, total protein, and enzymatic activity of PAL, CAT, APX, and GPX were evaluated. The mineral concentrations (N, P, K, Ca, Mg, S, Cu, Fe, Mn, Mo, Zn, Ni, and Si) in the leaves and roots of plants were also determined. The results showed that, compared to Zn, NZnO promoted increases in biomass (14-52%), chlorophylls (32-69%), and antioxidant compounds such as phenolics, flavonoids, and vitamin C. The activity of enzymes like CAT and APX, as well as the foliar concentration of Ca, Mg, S, Fe, Mn, Zn, and Si increased with NZnO. A better response was found in the plants for most variables with foliar applications of NZnO equivalent to 50-75% of the total Zn applied conventionally. These results demonstrate that total replacement of Zn with NZnO is possible, promoting fertilizer efficiency and the nutraceutical quality of lettuce.

Citing Articles

Current and emerging nanotechnology for sustainable development of agriculture: Implementation design strategy and application.

Nguyen N, Nguyen N, Nguyen P, Phan Q, Le T, Do H Heliyon. 2024; 10(10):e31503.

PMID: 38818209 PMC: 11137568. DOI: 10.1016/j.heliyon.2024.e31503.


Potential usage of biosynthesized zinc oxide nanoparticles from mangosteen peel ethanol extract to inhibit and promote rice growth.

Jaithon T, Atichakaro T, Phonphoem W, T-Thienprasert J, Sreewongchai T, T-Thienprasert N Heliyon. 2024; 10(1):e24076.

PMID: 38234900 PMC: 10792570. DOI: 10.1016/j.heliyon.2024.e24076.


Enhancing lettuce yield via Cu/Fe-layered double hydroxide nanoparticles spraying.

Wu H, Wan X, Niu J, Xu H, Zhang Y, Xue X J Nanobiotechnology. 2023; 21(1):417.

PMID: 37950234 PMC: 10638715. DOI: 10.1186/s12951-023-02178-6.

References
1.
Wang P, Grimm B . Connecting Chlorophyll Metabolism with Accumulation of the Photosynthetic Apparatus. Trends Plant Sci. 2021; 26(5):484-495. DOI: 10.1016/j.tplants.2020.12.005. View

2.
Chen J, Dou R, Yang Z, You T, Gao X, Wang L . Phytotoxicity and bioaccumulation of zinc oxide nanoparticles in rice (Oryza sativa L.). Plant Physiol Biochem. 2018; 130:604-612. DOI: 10.1016/j.plaphy.2018.08.019. View

3.
Sturikova H, Krystofova O, Huska D, Adam V . Zinc, zinc nanoparticles and plants. J Hazard Mater. 2018; 349:101-110. DOI: 10.1016/j.jhazmat.2018.01.040. View

4.
Sharifan H, Moore J, Ma X . Zinc oxide (ZnO) nanoparticles elevated iron and copper contents and mitigated the bioavailability of lead and cadmium in different leafy greens. Ecotoxicol Environ Saf. 2020; 191:110177. DOI: 10.1016/j.ecoenv.2020.110177. View

5.
DAlessandro S, Havaux M . Sensing β-carotene oxidation in photosystem II to master plant stress tolerance. New Phytol. 2019; 223(4):1776-1783. DOI: 10.1111/nph.15924. View