Foliar applied nanoscale and microscale CeO2 and CuO alter cucumber (Cucumis sativus) fruit quality

The Science of the Total Environment
Jie HongJorge L Gardea-Torresdey

Abstract

There is lack of information about the effects of foliar applied nanoparticles on fruit quality. In this study, three week-old soil grown cucumber seedlings were foliar-exposed to nCeO2, nCuO, and corresponding bulk counterparts at 50, 100, and 200mg/L. Respective suspensions/solutions were sprayed to experimental units in a volume of 250ml. Net photosynthesis rate (Pn), stomatal conductance (Gs), and transpiration rate (E) were measured 15days after treatment application and in 74day-old plants. Yield, fruit characteristics (size, weight, and firmness), Ce, Cu, and nutritional elements were also measured. Results showed a nano-specific decrement on Pn (22% and 30%) and E (11% and 17%) in seedling leaves exposed to nCeO2 and nCuO at 200mg/L, respectively, compared with control. nCeO2 at 50mg/L, bCeO2 at 200mg/L, and all Cu treatments, except nCuO at 100mg/L, significantly reduced fruit firmness (p≤0.05), compared with control. However, nCuO at 200mg/L and bCuO at 50mg/L significantly increased fruit fresh weight (p≤0.05). At 200mg/L, nCeO2 and bCeO2 reduced fruit Zn by 25%, while nCuO and bCuO reduced fruit Mo by 51% and 44%, respectively, compared with control. This study has shown that when the route of exposure is the foliag...Continue Reading

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Citations

Apr 7, 2017·Environmental Science & Technology·TianTian XiongSophie Sobanska
May 26, 2017·Journal of Agricultural and Food Chemistry·Christian O Dimkpa, Prem S Bindraban
Jan 10, 2019·International Journal of Molecular Sciences·Antonio Juárez-MaldonadoAdalberto Benavides-Mendoza
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Feb 9, 2021·Environmental Science & Technology·Swati RawatJorge L Gardea-Torresdey
Nov 19, 2020·Environmental Science and Pollution Research International·Chufan LiuXiaojun Yang
Feb 8, 2021·Ecotoxicology and Environmental Safety·Nisha ShabnamHyunook Kim
Mar 23, 2021·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Pramila SharmaRobert K DeLong
Aug 9, 2020·Journal of Hazardous Materials·Alejandra GomezJose R Peralta-Videa
May 15, 2021·Environmental Science & Technology·Astrid AvellanGregory V Lowry
Aug 23, 2020·Ecotoxicology and Environmental Safety·Yang LiuBaoshan Xing
Jun 21, 2021·Ecotoxicology and Environmental Safety·Ved PrakashShivesh Sharma
Jul 3, 2021·International Journal of Environmental Research and Public Health·Ildiko LungMarcel Pârvu
Jun 2, 2018·Journal of Agricultural and Food Chemistry·Ishaq O AdisaJorge L Gardea-Torresdey
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Feb 17, 2018·Journal of Agricultural and Food Chemistry·Jie YangBaoshan Xing
Mar 21, 2018·Journal of Agricultural and Food Chemistry·Wenjuan TanJorge L Gardea-Torresdey

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