The growth and uptake of gallium (Ga) and indium (In) of wheat seedlings in Ga- and In-contaminated soils.

Autor: Syu CH; Agricultural Chemistry Division, Taiwan Agricultural Research Institute, Council of Agriculture, Executive Yuan, Taiwan., Chen LY; Department of Agricultural Chemistry, National Taiwan University, Taipei City, Taiwan., Lee DY; Department of Agricultural Chemistry, National Taiwan University, Taipei City, Taiwan. Electronic address: dylee@ntu.edu.tw.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2021 Mar 10; Vol. 759, pp. 143943. Date of Electronic Publication: 2020 Dec 04.
DOI: 10.1016/j.scitotenv.2020.143943
Abstrakt: The emerging contaminants gallium (Ga) and indium (In) are extensively used in advanced industries and are considered as toxic to humans. Limited information is available on the dynamics of Ga and In in soil-upland crop systems. Therefore, this study aimed to investigate the effects of Ga and In on the growth and uptake of Ga and In by wheat plants grown in Ga- and In-contaminated soils. The wheat seedlings were planted in soils of different properties spiked with various Ga and In concentrations (50, 100, 200, and 400 mg kg -1 ). The plant-available Ga, In, and Al in the soils were extracted by 0.02 M CaCl 2 , and their concentrations in plant tissues of wheat seedlings and plant biomass were determined after harvesting. The results indicated that the Al toxicity of wheat seedlings increased with Ga and In concentrations in acidic soils. Indium phytotoxicity was found in both neutral and acidic soils. Plant analysis results indicated that the concentration of Ga and In in roots was approximately one order of magnitude higher than that in the shoots of wheat seedlings, and the capability for Ga translocation from roots to shoots was higher than for In. The results of this study suggest that the dynamics of Ga and In in soil-upland crop systems is strongly dependent on the soil properties, such as pH and Al availability.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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