Different toxicities of nanoscale titanium dioxide particles in the roots and leaves of wheat seedlings.

ABSTRACT: Despite previous studies on exploring the environmental effects of titanium dioxide nanoparticles particle (nTiO₂) on plants, the detailed impacts of nTiO₂ on the antioxidant system and photosynthesis of plants is still not well understood. This study was aimed at investigating the physiological and biochemical responses to nTiO₂ by oxidative damage, Ti bioaccumulation, cell death, and photosynthesis in wheat. The results showed that 5.0 g nTiO₂ L^-1 resulted in a significant decrease in plant growth, chlorophyll contents, and photosynthetic activity. However, the obvious accumulation of reactive oxygen species (ROS) and cell death were observed under nTiO₂ treatments in wheat roots and leaves. In addition, the concentrations

SUBMITTER: Chen Y 

PROVIDER: S-EPMC9065167 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature