Foliar uptake, biotransformation, and impact of CuO nanoparticles in Lactuca sativa L. var. ramosa Hort.
- PDF / 1,317,441 Bytes
- 17 Pages / 547.087 x 737.008 pts Page_size
- 79 Downloads / 218 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
ORIGINAL PAPER
Foliar uptake, biotransformation, and impact of CuO nanoparticles in Lactuca sativa L. var. ramosa Hort. Tiantian Xiong . Ting Zhang . Yuanhong Xian . Zhuangzhuang Kang . Shasha Zhang . Camille Dumat . Muhammad Shahid . Shaoshan Li
Received: 10 March 2020 / Accepted: 21 September 2020 Ó Springer Nature B.V. 2020
Abstract Plant leaves can intercept and directly absorb nanoparticles (NPs) that deposit on their surface, which can lead severe phytotoxicity. However, there is a large blind spot when it comes to the fate and phytotoxicity of NPs after leaf exposure, even though foliar uptake is likely to occur. In this study, lettuce leaves (Lactuca sativa L. var. ramosa Hort.) were exposed to different concentrations of copperoxide NPs (CuO-NPs, 0, 100, and 1000 mg L-1) for 5, 10, and 15 days. Foliar uptake, subcellular Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10653-020-00734-9) contains supplementary material, which is available to authorized users. T. Xiong T. Zhang Y. Xian Z. Kang S. Zhang S. Li (&) Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou 510631, China e-mail: [email protected]
distribution, chemical forms, and impact of CuONPs on nutrient status, antioxidant systems, and lettuce growth were examined. Substantially elevated Cu levels were observed in lettuce leaves (up to 6350 mg kg-1), which was one magnitude greater than that in the roots (up to 525 mg kg-1). Cu translocation factors from leaves to roots ranged from 1.80 to 15.6%. The application of CuO-NPs severely inhibited lettuce growth and altered the nutrient status in plants (especially Mn, K, and Ca). Moreover, CuONPs increased H2O2 generation, malonaldehyde level (on the 5th and 10th day of exposure), and catalase activity (on the 15th day of exposure) in lettuce leaves. The Cu concentrations in subcellular fractions were M. Shahid Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
C. Dumat Centre d’Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Universite´ Toulouse-Jean Jaure`s, 5 alle´e Antonio Machado, 31058 Toulouse Cedex 9, France C. Dumat INP-ENSAT, Universite´ de Toulouse, Avenue de l’Agrobiopole, 31326 Auzeville-Tolosane, France
123
Environ Geochem Health
ranked: cell wall & organelles [ soluble fraction in lettuce leaves, and organelles [ cell wall [ soluble fraction in lettuce roots. Undissolved Cu forms were predominant in lettuce, which may have helped to reduce the Cu’s mobility and phytotoxicity in the plant. The findings of this study will be of great interest in areas with high levels of metal-NPs in the atmosphere. Keywords Nanoparticles Foliar exposure Subcellular distribution Chemical speciation Oxidative stress
Introduction Given the wide range of nanoparticle (NP) uses in environmental, commercial, and medical
Data Loading...
