Journal article
Lead and copper-induced hormetic effect and toxicity mechanisms in lettuce (Lactuca sativa L.) grown in a contaminated soil
The Science of the Total Environment, Vol.741, pp.1-12
01/11/2020
PMID: 32615435
Metrics
8 Record Views
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Abstract
Lead (Pb) and copper (Cu) contamination seriously threatens agricultural production and food safety. This study aims to investigate Pb and Cu induced hormetic effect and toxicity mechanisms in lettuce (Lactuca sativa L.) and establish reliable empirical models of potentially toxic elements (PTEs) transfer in the soil–plant system. The content and distribution of Pb and Cu at subcellular levels in lettuce plants were examined using inductively coupled plasma-mass spectrometry, differential centrifugation and micro-X-ray fluorescence spectroscopy. The PTE-loaded capacity of Pb that ensures food safety was lower than that of Cu in the studied soil, but the PTE-loaded capacity of Pb that limits yield was higher than that of Cu. Lead in lettuce roots mainly accumulated in the cell wall (41%), while Cu mainly accumulated in the vacuoles (46%). The Pb and Cu were primarily distributed in the radicle of lettuce seeds under severe PTE stress, resulting in no seed development. Iron plaque formed on the root surface of lettuce seedlings and sequestered Pb and Cu via chelation. At the same concentration, lettuce was less tolerant to Cu in contaminated soil than Pb due to the higher activity of Cu ions in the soil. Lead was more phytotoxic to lettuce than Cu, however, since the radicle emerged from the seed under severe Cu levels, while it did not protrude under severe Pb levels. The potentially damaging effect of Pb in the visually healthy lettuce appeared to be higher than that of Cu under the same soil contamination level.
Details
- Title
- Lead and copper-induced hormetic effect and toxicity mechanisms in lettuce (Lactuca sativa L.) grown in a contaminated soil
- Creators
- Jianhong Li - Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, ChinaYong Qiu - College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, Fujian 362000, ChinaQingjie Zhao - College of Tropical Crops, Hainan University, Haikou, Hainan 570228, ChinaDongliang Chen - Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, ChinaZhipeng Wu - College of Tropical Crops, Hainan University, Haikou, Hainan 570228, ChinaAn-an Peng - Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, ChinaNabeel Khan Niazi - Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, PakistanLukáš Trakal - Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Praha 6, Suchdol, Czech RepublicRuben Sakrabani - School of Water, Energy & Environment, Cranfield University, Cranfield, MK43 0AL, Bedfordshire, United KingdomBin Gao - Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, USAHailong Wang - Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, ChinaWeidong Wu - College of Tropical Crops, Hainan University, Haikou, Hainan 570228, China
- Publication Details
- The Science of the Total Environment, Vol.741, pp.1-12
- Publisher
- Elsevier BV
- Grant note
- This work was financially supported by the National Key R&D Program of China (2017YFD0202101), the National Natural Science Foundation of China (21866013, 21876027, 51904079), the United Fund of Guangdong Provincial Basic and Applied Basic Research Foundation, China (2019A1515110705), the Crop Science Postgraduate Innovation Project of Hainan University Tropical Agriculture and Forestry College (ZWCX2018012, ZWCX2018013), The Ministry of Education, Youth and Sports of the Czech Republic (CZ.02.1.01/0.0/0.0/16_026/0008403), and the Special Funding for the Science and Technology Innovation Team of Foshan, China (1920001000083).
- Identifiers
- 991012951091202368
- Copyright
- © 2020 Elsevier B.V. All rights reserved.
- Academic Unit
- School of Environment, Science and Engineering; Science; Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article