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This work investigated the interaction of FeO nanoparticles (NPs) with a floating water plant (Eichhornia crassipes). The effects of FeO NPs on E. crassipes physiology and root morphology as well as the migration and transformation of FeO NPs in plant were studied emphatically. FeO NPs (200 mg/L) showed significant growth inhibition on E. crassipes roots and leaves after a 21-day exposure, while dissolved Fe ions and FeO bulk particles had no obvious effect on E. crassipes growth. Scanning electron microscopy showed that the roots of E. crassipes were significantly damaged, the root tips became thin and the root epidermis began to peel off after FeO NPs exposure. In addition, there was disordered cell arrangement and a destroyed elongation zone of the root tips. The physiology of E. crassipes was also affected. In particular, after exposure to FeO NPs (200 mg/L), a distinct decrease in chlorophyll content and catalase activity and an increase of malondialdehyde (MDA) content could be seen. Transmission electron microscopy and energy dispersive spectroscopy revealed that FeO NPs were present in the root epidermis, intercellular space and protoplasts, as well as in the leaf cytoplasm and chloroplasts. Vulcanization in the leaves was also found through diffraction analysis, which may be due to the small number of absorbed nanoparticles, some of which still existed in the original form in the leaves while others were reduced to FeS through interactions with plant components during translocation. These findings are helpful for better understanding the fate of NPs in aquatic plants. Moreover, it is important to evaluate the water environment safety of NPs.
This article was published in the following journal.
Name: The Science of the total environment
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Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.
Synthesis, metabolism, and poisoning associated with drugs, pharmaceuticals, and other active molecules. Toxicological phenomena also include the adverse effects of physical phenomena such as RADIATION and NOISE.
A plant genus of the family LILIACEAE. Do not confuse with water hyacinth (EICHHORNIA).
A plant genus of the family PONTEDERIACEAE that is used as a biological filter for treating wastewater.
The properties and processes of drug, toxin, and poison metabolism, and their interactions and effects on biological systems. Toxicological phenomena also include the adverse effects of physical phenomena such as RADIATION and NOISE.
Acne Dermatology Eczema Psoriasis Wound Care Dermatology is the medical specialty concerned with the diagnosis and treatment of skin disorders (Oxford Medical Dictionary). As well as studying how the skin works, dermatology covers...