Nanoparticles (NPs) have been synthetized and studied to be incorporated in many industrial and medical
applications in recent decades. Due to their different physical and chemical properties compared with bulk
materials, researchers are focused to understand their interactions with the surroundings. Living organisms
such as plants are exposed to these materials and they are able to tolerate different concentrations and types
of NPs. Cobalt ferrite (CoFe2O4) NPs are being studied for their application in medical sciences because of their
high coercivity, anisotropy, and large magnetostriction. These properties are desirable in magnetic resonance
imaging, drug delivery, and cell labeling. This study is aimed to explore the tolerance of Solanum lycopersicum
L. (tomato) plants to CoFe2O4 NPs. Tomato plants were grown in hydroponic media amended with CoFe2O4
nanoparticles in a range from0 to 1000mg L−1
. Exposure to CoFe2O4 NPs did not affect germination and growth
of plants. Uptake of Fe and Co inside plant tissues increased as CoFe2O4 nanoparticle concentrationwas increased
in themedia.Mg uptake in plant leaves reached itsmaximumlevel of 4.9mg g−1
DW(dryweight) at 125mg L−1
of CoFe2O4 NPs exposure and decreased at high CoFe2O4 NPs concentrations. Similar patternwas observed for Ca
uptake in leaves where the maximum concentration found was 10 mg g−1
DWat 125 mg L−1
of CoFe2O4 NPs