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- W2966021957 endingPage "2498" @default.
- W2966021957 startingPage "2498" @default.
- W2966021957 abstract "Young and mature leaves of Arabidopsis thaliana were exposed by foliar spray to 30 mg L-1 of CuZn nanoparticles (NPs). The NPs were synthesized by a microwave-assisted polyol process and characterized by dynamic light scattering (DLS), X-ray diffraction (XRD), and transmission electron microscopy (TEM). CuZn NPs effects in Arabidopsis leaves were evaluated by chlorophyll fluorescence imaging analysis that revealed spatiotemporal heterogeneity of the quantum efficiency of PSII photochemistry (ΦPSΙΙ) and the redox state of the plastoquinone (PQ) pool (qp), measured 30 min, 90 min, 180 min, and 240 min after spraying. Photosystem II (PSII) function in young leaves was observed to be negatively influenced, especially 30 min after spraying, at which point increased H2O2 generation was correlated to the lower oxidized state of the PQ pool.. Recovery of young leaves photosynthetic efficiency appeared only after 240 min of NPs spray when also the level of ROS accumulation was similar to control leaves. On the contrary, a beneficial effect on PSII function in mature leaves after 30 min of the CuZn NPs spray was observed, with increased ΦPSΙΙ, an increased electron transport rate (ETR), decreased singlet oxygen (1O2) formation, and H2O2 production at the same level of control leaves.An explanation for this differential response is suggested." @default.
- W2966021957 created "2019-08-13" @default.
- W2966021957 creator A5007203822 @default.
- W2966021957 creator A5044506616 @default.
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- W2966021957 creator A5073478145 @default.
- W2966021957 creator A5090123176 @default.
- W2966021957 creator A5091093177 @default.
- W2966021957 date "2019-08-06" @default.
- W2966021957 modified "2023-10-14" @default.
- W2966021957 title "Leaf Age-Dependent Effects of Foliar-Sprayed CuZn Nanoparticles on Photosynthetic Efficiency and ROS Generation in Arabidopsis thaliana" @default.
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- W2966021957 doi "https://doi.org/10.3390/ma12152498" @default.