Comparative effects of nano and bulk-Fe3O4 on the growth of cucumber (Cucumis sativus)

Research output: Contribution to journalArticle

Authors

  • Alexandre Konate
  • Yaoyao Wang
  • Xiao He
  • Muhammd Adeel
  • Yuhui Ma
  • Yayun Ding
  • Junzhe Zhang
  • Jie Yang
  • Simon Kizito
  • Yukui Rui
  • Zhiyong Zhang

Colleges, School and Institutes

Abstract

Cucumber (Cucumis sativus) plants were cultivated in hydroponic media with nano and bulk- iron oxide (Fe3O4) (50, 500 and 2000 mg/L) over a period of 21 days. At the low concentration (50 mg/L), nano-Fe3O4 resulted in reduction of biomass and enzyme activities compared to the control. However, at the higher concentration of nano-Fe3O4 dosage (2000 mg/L), there was a significant increase in biomass, antioxidant enzymes superoxide dismutase (SOD) and peroxidase (POD). In contrary, the high concentration of bulk-Fe3O4 caused phytotoxicity in terms of biomass and enzymes activity. The phytotoxicity was dependent on the particles property (mainly sizes and aggregation) for nano-F3O4 and concentration dependent for bulk-Fe3O4. The particle size is an important factor that can influence the bioavailability of nanomaterials, which need to be included when evaluating the exposure of nanomaterials and their deleterious effects in the environment. These promising results can help to develop the possible application of Fe3O4 NPs which may improve nutrient management to overcome food security.

Details

Original languageEnglish
Pages (from-to)547-554
Number of pages8
JournalEcotoxicology and Environmental Safety
Volume165
Early online date14 Sep 2018
Publication statusPublished - Dec 2018

Keywords

  • Hydroponics systems, Nano-Fe3O4, Phytotoxicity, Cucumber