Effect of nanoparticles on plant photosynthesis mechanism
Author(s): LI Wei, HUANG Jin, LI Qi-chang, SU Bao-lian, XIE Hao
Pages: 63-66,69
Year: 2015 Issue: 5
Journal: Journal of Biology
Keyword: nanoparticles; chloroplast; photosynthetic activity; photosynthesis;
Abstract: To investigate the effect of nanoparticles ( NPs) on plant photosynthesis, a simple and efficient approach was adopted.Five typical representative mental oxide NPs were chosen to interacted with the chloroplast, the reaction center of photosynthesis of plant. The variation of photosynthetic activity and fluorescence effect were measured.Scanning electron microscopy ( SEM) and fluorescent microscopy showed that the impact of NPs on the photosynthetic activity of chloroplast was achieved by contacting with each other.The results indicated that ZnO and CdS NPs had obvious inhibiting effect, and with the increase of concentration the inhibition was more significantly;γ-Fe2 O3 NPs can be used as electron acceptor, had some promoting effect at low concentration, but with the increase of the concentration the inhibition effect appeared gradually.Suggesting the impact mechanism of NPs was affecting the process of the e-lectron transfer.This work provides a promising approach for the development of the field of NPs in plants, including nano-fertilizer, nanobionics and a renewable, high-efficiency biochemical detectors.Meanwhile, it provides a theoretical basis for evaluating the poten-tial effects of NPs on environment.
Pages: 63-66,69
Year: 2015 Issue: 5
Journal: Journal of Biology
Keyword: nanoparticles; chloroplast; photosynthetic activity; photosynthesis;
Abstract: To investigate the effect of nanoparticles ( NPs) on plant photosynthesis, a simple and efficient approach was adopted.Five typical representative mental oxide NPs were chosen to interacted with the chloroplast, the reaction center of photosynthesis of plant. The variation of photosynthetic activity and fluorescence effect were measured.Scanning electron microscopy ( SEM) and fluorescent microscopy showed that the impact of NPs on the photosynthetic activity of chloroplast was achieved by contacting with each other.The results indicated that ZnO and CdS NPs had obvious inhibiting effect, and with the increase of concentration the inhibition was more significantly;γ-Fe2 O3 NPs can be used as electron acceptor, had some promoting effect at low concentration, but with the increase of the concentration the inhibition effect appeared gradually.Suggesting the impact mechanism of NPs was affecting the process of the e-lectron transfer.This work provides a promising approach for the development of the field of NPs in plants, including nano-fertilizer, nanobionics and a renewable, high-efficiency biochemical detectors.Meanwhile, it provides a theoretical basis for evaluating the poten-tial effects of NPs on environment.
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