Developmental and Reproductive Effects of Iron Oxide Nanoparticles in Arabidopsis thaliana

International Journal of Molecular Sciences

Sergey Bombin²  Mitchell LeFebvre²  Jennifer Sherwood¹  Yaolin Xu¹  Yuping Bao¹  Katrina M. Ramonell² 

[1] Department of Chemical and Biological Engineering, University of Alabama, Box 870203, Tuscaloosa, AL 35487, USA; E-Mails:;Department of Biological Sciences, University of Alabama, Box 870344, Tuscaloosa, AL 35487, USA; E-Mails:

关键词: nanoparticle;    iron oxide;    Arabidopsis thaliana;    phytotoxicity;    pollen viability;    plant development;    seed yield;   

DOI  :  10.3390/ijms161024174

来源: mdpi

【 摘 要 】

Increasing use of iron oxide nanoparticles in medicine and environmental remediation has led to concerns regarding exposure of these nanoparticles to the public. However, limited studies are available to evaluate their effects on the environment, in particular on plants and food crops. Here, we investigated the effects of positive (PC) and negative (NC) charged iron oxide (Fe₂O₃) nanoparticles (IONPs) on the physiology and reproductive capacity of Arabidopsis thaliana at concentrations of 3 and 25 mg/L. The 3 mg/L treated plants did not show evident effects on seeding and root length. However, the 25 mg/L treatment resulted in reduced seedling (positive-20% and negative-3.6%) and root (positive-48% and negative-negligible) length. Interestingly, treatment with polyethylenimine (PEI; IONP-PC coating) also resulted in reduced root length (39%) but no change was observed with polyacrylic acid (PAA; IONP-NC coating) treatment alone. However, treatment with IONPs at 3 mg/L did lead to an almost 5% increase in aborted pollen, a 2%–6% reduction in pollen viability and up to an 11% reduction in seed yield depending on the number of treatments. Interestingly, the treated plants did not show any observable phenotypic changes in overall size or general plant structure, indicating that environmental nanoparticle contamination could go dangerously unnoticed.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.