Jointed toxicity of TiO2 NPs and Cd to rice seedlings : NPs alleviated Cd toxicity and Cd promoted NPs uptake

Bibliographische Detailangaben
Veröffentlicht in:	Plant physiology and biochemistry : PPB. - 1991. - 110(2017) vom: 19. Jan., Seite 82-93
1. Verfasser:	Ji, Ye (VerfasserIn)
Weitere Verfasser:	Zhou, Yun, Ma, Chuanxin, Feng, Yan, Hao, Yi, Rui, Yukui, Wu, Wenhao, Gui, Xin, Le, Van Nhan, Han, Yaning, Wang, Yingcai, Xing, Baoshan, Liu, Liming, Cao, Weidong
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2017
Zugriff auf das übergeordnete Werk:	Plant physiology and biochemistry : PPB
Schlagworte:	Journal Article Cadmium Jointed toxicity TiO(2) nanoparticles Antioxidants Lipid Peroxides Plant Growth Regulators Plant Proteins 00BH33GNGH Chlorophyll mehr... 1406-65-1 titanium dioxide 15FIX9V2JP Malondialdehyde 4Y8F71G49Q Titanium D1JT611TNE Ascorbate Peroxidases EC 1.11.1.11 Catalase EC 1.11.1.6 Superoxide Dismutase EC 1.15.1.1

Beschreibung
Zusammenfassung:	Copyright © 2016 Elsevier Masson SAS. All rights reserved. Previous studies have reported that nanoparticles (NPs) and heavy metals are toxic to the environment. However, the jointed toxicity is not yet well understood. This study was aimed to investigate the combined toxicity of TiO2 NPs and the heavy metal cadmium (Cd) to plants. Rice (Oryzasativa L.) was selected as the target plant. The rice seedlings were randomly separated into 12 groups and treated with CdCl2 (0, 10 and 20 mg/L) and TiO2 NPs (0, 10, 100 and 1000 mg/L). The plant height, biomass and root length indicated significant toxicity of Cd to the growth, but TiO2 NPs exhibited the potential ability to alleviate the Cd toxicity. Transmission electron microscopy (TEM) and energy dispersive spectrometer (EDS) confirmed the existence of TiO2 NPs in plants. Elemental analysis of Ti and Cd suggested that the presences of Cd significantly decreased the Ti accumulation in the rice roots in the co-exposure treatments. Interestingly, TiO2 NPs could lower the Cd uptake and distribution in rice roots and leaves. The results of antioxidant enzyme activity, lipid peroxide as well as phytohormones varied in the different treatments. Comparing with the Cd alone treatment, the net photosynthetic rate and chlorophyll content were significantly increased in the co-exposure treatments, suggesting that TiO2 NPs could tremendously reduce the Cd toxicity
Beschreibung:	Date Completed 18.04.2017 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE
ISSN:	1873-2690
DOI:	10.1016/j.plaphy.2016.05.010