Effects, uptake, and translocation of aluminum oxide nanoparticles in lettuce: A comparison study to phytotoxic aluminum ions

The Science of the Total Environment
Katie L HayesBojeong Kim

Abstract

The widespread use of aluminum oxide nanoparticles (Al2O3 NPs) unavoidably causes the release of NPs into the environment, potentially having unforeseen consequences for biological processes. Due to the well-known issue of Al phytoxicity, plant interactions with Al2O3 NPs are cause for concern, but these interactions remain poorly understood. This study investigated the effects of Al2O3 NPs on lettuce (Lactuca sativa L.) to elucidate the similarities and differences in plant growth responses when compared to those of Al ions. Seed germination, root length, biomass production, and uptake of Al and nutrients were measured from hydroponically-grown lettuce with varying concentrations of Al2O3 NPs (0, 0.4, 1, and 2 mg/mL) or AlCl3 (0, 0.04, 0.4, and 1 mg/mL). The Al2O3 NPs treatments had a positive influence on root elongation, whereas AlCl3 significantly reduced emerging root lengths. While 0.4 mg/mL Al2O3 NPs promoted biomass, 1 and 2 mg/mL showed a 10.4% and 17.9% decrease in biomass, respectively, when compared to the control. Similarly, 0.4 and 1 mg/mL AlCl3 reduced biomass to 22.3% and 9.96%, respectively. Both treatments increased Al uptake by roots linearly; however, translocation of Al2O3 NPs into shoots was limited, where...Continue Reading

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Citations

Sep 2, 2020·Journal of the Science of Food and Agriculture·José A Hernández-DíazSoledad García-Morales
Aug 28, 2020·Nanomaterials·Luis A ParamoKaren Esquivel
Jan 4, 2021·Environmental Science and Pollution Research International·Marcio Yukihiro KohatsuCamila Neves Lange
Jan 28, 2021·Nanomaterials·Anderson do Espirito Santo PereiraCatherine Santaella
Feb 10, 2021·Plant Physiology and Biochemistry : PPB·Premysl Landa
Jun 1, 2021·ACS Omega·Zhihao LiangShiwei Song
Jul 3, 2021·International Journal of Environmental Research and Public Health·Ildiko LungMarcel Pârvu
Aug 15, 2021·Environmental Science and Pollution Research International·Mo HongWang-Wang Tang

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