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Differences in root surface adsorption, root uptake, subcellular distribution, and chemical forms of Cd between low- and high-Cd-accumulating wheat cultivars.
Environ Sci Pollut Res Int. 2020 Jan; 27(2):1417-1427.ES

Abstract

The differences in the mechanism of cadmium (Cd) accumulation in the grains of different wheat (Triticum aestivum L.) cultivars remain unclear. Thus, we conducted a hydroponic experiment in a greenhouse to compare root surface adsorption, root uptake, subcellular distribution, and chemical forms of Cd between low- and high-Cd-accumulating wheat cultivars at seedling stage, to improve our understanding of the differences between cultivars. The results showed that Cd adsorbed on the root surface was mainly in a complexed form, and the total amount of Cd on the Yaomai16 (YM, high-Cd-accumulating genotypes) root surface was higher (p < 0.05) than that on Xinmai9817 (XM, low-Cd-accumulating genotypes). A large amount of Cd ions adsorbed on root surface would cause plant damage and inhibit growth. Comparing the root-to-shoot translocation factors of Cd, the transfer coefficients of YM were 1.017, 1.446, 1.464, and 1.030 times higher than those of XM under 5, 10, 50, and 100 μmol L-1 Cd treatments, respectively. The subcellular distribution of Cd under Cd exposure is mainly in the cell wall and soluble fraction. The proportions of Cd in YM shoot soluble fraction were higher than those in XM, which was the main detoxification mechanism limiting the activity of Cd and may be responsible for low Cd accumulation in grains, while the effects of the chemical forms of Cd on migration and detoxification were not found to be related to Cd accumulation in the kernels.

Authors+Show Affiliations

Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, 453003, People's Republic of China. Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources of CAAS, Xinxiang, Henan, 453003, People's Republic of China. Graduate University of Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, 453003, People's Republic of China. Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources of CAAS, Xinxiang, Henan, 453003, People's Republic of China.Departamento de Agronomía-CERZOS (CONICET), Universidad Nacional del Sur, San Andrés 800, 8000, Bahía Blanca, Prov. Buenos Aires, Argentina.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, 453003, People's Republic of China. qxb6301@sina.cn.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, 453003, People's Republic of China. Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources of CAAS, Xinxiang, Henan, 453003, People's Republic of China.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, 453003, People's Republic of China. Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources of CAAS, Xinxiang, Henan, 453003, People's Republic of China.College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang, Henan, 453003, People's Republic of China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31749002

Citation

Xiao, Ya-Tao, et al. "Differences in Root Surface Adsorption, Root Uptake, Subcellular Distribution, and Chemical Forms of Cd Between Low- and high-Cd-accumulating Wheat Cultivars." Environmental Science and Pollution Research International, vol. 27, no. 2, 2020, pp. 1417-1427.
Xiao YT, Du ZJ, Busso CA, et al. Differences in root surface adsorption, root uptake, subcellular distribution, and chemical forms of Cd between low- and high-Cd-accumulating wheat cultivars. Environ Sci Pollut Res Int. 2020;27(2):1417-1427.
Xiao, Y. T., Du, Z. J., Busso, C. A., Qi, X. B., Wu, H. Q., Guo, W., & Wu, D. F. (2020). Differences in root surface adsorption, root uptake, subcellular distribution, and chemical forms of Cd between low- and high-Cd-accumulating wheat cultivars. Environmental Science and Pollution Research International, 27(2), 1417-1427. https://doi.org/10.1007/s11356-019-06708-4
Xiao YT, et al. Differences in Root Surface Adsorption, Root Uptake, Subcellular Distribution, and Chemical Forms of Cd Between Low- and high-Cd-accumulating Wheat Cultivars. Environ Sci Pollut Res Int. 2020;27(2):1417-1427. PubMed PMID: 31749002.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Differences in root surface adsorption, root uptake, subcellular distribution, and chemical forms of Cd between low- and high-Cd-accumulating wheat cultivars. AU - Xiao,Ya-Tao, AU - Du,Zhen-Jie, AU - Busso,Carlos-A, AU - Qi,Xue-Bin, AU - Wu,Hai-Qing, AU - Guo,Wei, AU - Wu,Da-Fu, Y1 - 2019/11/20/ PY - 2019/05/06/received PY - 2019/10/07/accepted PY - 2019/11/22/pubmed PY - 2020/3/26/medline PY - 2019/11/22/entrez KW - Adsorption KW - Cadmium KW - Chemical forms KW - Subcellular distribution KW - Winter wheat SP - 1417 EP - 1427 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 27 IS - 2 N2 - The differences in the mechanism of cadmium (Cd) accumulation in the grains of different wheat (Triticum aestivum L.) cultivars remain unclear. Thus, we conducted a hydroponic experiment in a greenhouse to compare root surface adsorption, root uptake, subcellular distribution, and chemical forms of Cd between low- and high-Cd-accumulating wheat cultivars at seedling stage, to improve our understanding of the differences between cultivars. The results showed that Cd adsorbed on the root surface was mainly in a complexed form, and the total amount of Cd on the Yaomai16 (YM, high-Cd-accumulating genotypes) root surface was higher (p < 0.05) than that on Xinmai9817 (XM, low-Cd-accumulating genotypes). A large amount of Cd ions adsorbed on root surface would cause plant damage and inhibit growth. Comparing the root-to-shoot translocation factors of Cd, the transfer coefficients of YM were 1.017, 1.446, 1.464, and 1.030 times higher than those of XM under 5, 10, 50, and 100 μmol L-1 Cd treatments, respectively. The subcellular distribution of Cd under Cd exposure is mainly in the cell wall and soluble fraction. The proportions of Cd in YM shoot soluble fraction were higher than those in XM, which was the main detoxification mechanism limiting the activity of Cd and may be responsible for low Cd accumulation in grains, while the effects of the chemical forms of Cd on migration and detoxification were not found to be related to Cd accumulation in the kernels. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/31749002/Differences_in_root_surface_adsorption_root_uptake_subcellular_distribution_and_chemical_forms_of_Cd_between_low__and_high_Cd_accumulating_wheat_cultivars_ L2 - https://dx.doi.org/10.1007/s11356-019-06708-4 DB - PRIME DP - Unbound Medicine ER -