10 research outputs found
In vivo synthesis of nanomaterials in plants: location of silver nanoparticles and plant metabolism
Growth and Photosynthetic Inhibition of Cerium Oxide Nanoparticles on Soybean (Glycine max)
Uptake and translocation of metals and nutrients in tomato grown in soil polluted with metal oxide (CeO2, Fe3O4, SnO2, TiO2) or metallic (Ag, Co, Ni) engineered nanoparticles
The influence of exposure to engineered nanoparticles
(NPs) was studied in tomato plants, grown in a soil and
peat mixture and irrigated with metal oxides (CeO2, Fe3O4,
SnO2, TiO2) and metallic (Ag, Co, Ni) NPs. The morphological
parameters of the tomato organs, the amount of component
metals taken up by the tomato plants from NPs added to
the soil and the nutrient content in different tomato organs
were also investigated. The fate, transport and possible toxicity
of different NPs and nutrients in tomato tissues from soils
were determined by inductively coupled plasma-optical emission
spectrometry (ICP-OES). The tomato yield depended on
the NPs: Fe3O4-NPs promoted the root growth, while SnO2-
NP exposure reduced it (i.e. +152.6 and −63.1 % of dry
matter, respectively). The NP component metal mainly accumulated
in the tomato roots; however, plants treated with Ag-,
Co- and Ni-NPs showed higher concentration of these elements
in both above-ground and below-ground organs with
respect to the untreated plants, in addition Ag-NPs also contaminated
the fruits. Moreover, an imbalance of K translocation
was detected in some plants exposed to Ag-, Co- and
Fe3O4-NPs. The component metal concentration of soil rhizosphere
polluted with NPs significantly increased compared
to controls, and NPs were detected in the tissues of the tomato
roots using electron microscopy (ESEM-EDS)