Maghemite Nanoparticles Acts as Nanozymes, Improving Growth and Abiotic Stress Tolerance in Brassica napus

• Published in: Nanoscale research letters 2017-12, Vol.12 (1), p.631-9, Article 631
• Main Authors: Palmqvist, N.G. Martin, Seisenbaeva, Gulaim A., Svedlindh, Peter, Kessler, Vadim G.
• Format: Article
• Language: English
• Subjects: Agricultural Science; Agrobio nanotechnology; Agronomy; Brassica; Brassica napus; Catalase activity; Chemistry and Materials Science; Chlorophyll; Drought; Drought stress; Enzymatic activity; Fertilizers; Growth promotion; Growth rate; Hematite; Hydrogen peroxide; Iron oxide nanoparticles; Iron oxides; Jordbruksvetenskap; Lipid peroxidation; Maghemite nanoparticles; Malondialdehyde; Materials Science; Molecular Medicine; Nano agriculture; Nano Express; Nano-technology; Nanochemistry; Nanofertilizer; Nanoparticles; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; Nanoteknik; Nanozyme; Peroxidation; Rape plants; Reactive oxygen species scavenging; Yttrium
• ISSN: 1931-7573; 1556-276X; 1556-276X
• DOI: 10.1186/s11671-017-2404-2

Yttrium doping-stabilized γ-Fe 2 O 3 nanoparticles were studied for its potential to serve as a plant fertilizer and, through enzymatic activity, support drought stress management. Levels of both hydrogen peroxide and lipid peroxidation, after drought, were reduced when γ-Fe 2 O 3 nanoparticles were delivered by irrigation in a nutrient solution to Brassica napus plants grown in soil. Hydrogen peroxide was reduced from 151 to 83 μM g −1 compared to control, and the malondialdehyde formation was reduced from 36 to 26 mM g −1 . Growth rate of leaves was enhanced from 33 to 50% growth compared to fully fertilized plants and SPAD-measurements of chlorophyll increased from 47 to 52 suggesting improved agronomic properties by use of γ-Fe 2 O 3 nanoparticles as fertilizer as compared to chelated iron.