Assessment of TiO2 nanoparticles on maize seedlings and terrestrial isopods under greenhouse conditions
This study aims to evaluate the TiO2 nanoparticles (NPs) and soil type effect on Zea mays L. seedlings and to assess the effect of the TiO2 NPs retained in organic matter on terrestrial isopods (Armadillidium vulgare, Latreille). It was hypothesized that (i) the combined effect of soil pH and minerals, and the addition of TiO2 NPs harm maize plants, and (ii) increasing Ti’s content in organic matter (OM) causes mortality in the isopods. Under greenhouse conditions, the effects of TiO2 NPs (300 and 600 mg kg−1 dry soil) were assessed during 21 days in acid or alkaline soils, with an organic matter layer above the soil surface (3 cm). An inhibitory effect of TiO2 NPs on plant length and root size was clearly shown at 21 days in alkaline soil but not in acid soils. Besides, a higher amount of Ti was accumulated on maize tissues in alkaline soil than those grown on acid soil. An increase in TiO2 NPs caused higher Ti concentrations in the soil organic matter (SOM), which harmed the survival and weight of the terrestrial isopods when the OM is consumed. Isopods limit the consumption of NPs at high concentrations while the NPs leached toward soil deeper layers allowing a reduction in plant height and root size in Z. mays plants grown in alkaline soil. Nevertheless, further investigations on the effect of TiO2 NPs in the association of plants and terrestrial isopods in natural conditions are required.
| Main Authors: | , , , , , |
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| Format: | Texto biblioteca |
| Language: | eng |
| Subjects: | Maíz, Nanopartículas de TiO2, Isópodos terrestres, Armadillidium vulgare, Contaminación del aire, Cultivos de invernadero, |
| Online Access: | https://link.springer.com/article/10.1007/s42729-021-00515-y |
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