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Effects of high dose copper on plant growth and mineral nutrient (Zn, Fe, Mg, K, Ca) uptake in spinach.

Authors
  • Liu, Zheng1, 2
  • Bai, Ying3
  • Luo, Lixia4, 5
  • Wan, Jundi4, 5
  • Wang, Wei4, 5
  • Zhao, Guohu4, 5
  • 1 Gansu Provincial Key Discipline "Analysis and Treatment of Regional Typical Environmental Pollutants," School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China. [email protected] , (China)
  • 2 Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China. [email protected] , (China)
  • 3 Gansu Academy of Environmental Science, Lanzhou, 730030, China. , (China)
  • 4 Gansu Provincial Key Discipline "Analysis and Treatment of Regional Typical Environmental Pollutants," School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China. , (China)
  • 5 Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control, School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China. , (China)
Type
Published Article
Journal
Environmental Science and Pollution Research
Publisher
Springer-Verlag
Publication Date
Jul 01, 2021
Volume
28
Issue
28
Pages
37471–37481
Identifiers
DOI: 10.1007/s11356-021-13395-7
PMID: 33713267
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Loessal soil is one of the main cultivated soils in northwest China. Part of its distribution area was irrigated with industrial wastewater in past three decades. This caused heavy metal contamination in the soil. It had induced toxicity on crops and also threatened local human health for now. Based on a field plot experiment, effects of different Cu concentrations (from 45 to 2000 mg kg-1) in loessal soil on spinach plant growth and uptake of mineral nutrients (Zn, Fe, Mg, K, and Ca) by spinach were investigated. The Cu addition increased available concentrations of mineral nutrients in loessal soil and concentrations of Cu, Zn, Mg, and Ca in roots. The translocation of mineral nutrients from roots to leaves was inhibited under Cu addition, inducing their decrease in leaves. The EC10 and EC50 of soil Cu in relative dry weights of leaves were 240.33 mg kg-1 and 1205.04 mg kg-1, respectively. The PLS-PM analysis showed that available concentrations of nutrients in soil were only affected by Cu in soil positively, nutrients in roots were mainly affected by Cu in soil and Cu in leaves positively, nutrients in leaves were mainly affected by Cu in roots negatively, translocation of nutrients in spinach and plant growth were principally affected by Cu in leaves negatively, and the total effect of Cu in leaves on nutrients in roots and leaves, translocation of nutrients in spinach, and plant growth was the highest. Our results indicated that the phytotoxicity of Cu including spinach growth inhibition and mineral disorder in spinach was mainly affected by the Cu concentrations in leaves. © 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

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