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Accumulation and distribution of arsenic and cadmium in winter wheat (Triticum aestivum L.) at different developmental stages.
Sci Total Environ. 2019 Jun 01; 667:532-539.ST

Abstract

Arsenic (As) and cadmium (Cd) are known to be toxic to humans, and elevated concentrations have been documented in food crops worldwide. However, little is known regarding their uptake, translocation, and distribution in wheat plants during plant development. A series of experiments were conducted to investigate the spatial distribution and dynamics of As and Cd in two wheat cultivars (cv. JN12 and JM85; the latter is a low grain Cd accumulator) at different developmental stages. Root concentrations of As decreased by 84%, and those of Cd by 67%, from tillering to maturity. In contrast, As concentrations in the stems increased 3.1-fold. A significant decrease in root As accumulation was observed at the mature stage, whereas root Cd accumulation decreased largely at the elongation stage. The concentrations of Cd in all leaves and As in new leaves increased as plant growth advanced. However, As concentrations in old leaves decreased significantly from grain filling to maturity. In both cultivars, the upward transfer toward younger parts of shoots was greater in the case of Cd than of As. The remobilization of As and Cd from stems and roots differed between the two cultivars. Arsenic concentrations in rachis, glumes, and grain in JM85 were significantly higher than those in JN12, whereas As concentrations in roots and stems did not differ between the cultivars. Grain Cd was significantly higher in JN12 than in JM85, but Cd concentrations in rachis and glumes were similar between the cultivars. The difference in grain Cd concentration between the two cultivars depended on root and stem Cd remobilization and redistribution from rachis to glumes and grain; in contrast, accumulation of As in grain was influenced by As remobilization from the leaves and stem to the spike.

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Authors+Show Affiliations

Shi GL
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China; Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China; The UWA Institute of Agriculture, and UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia.
Li DJ
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
Wang YF
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
Liu CH
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
Hu ZB
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China; Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, PR China.
Lou LQ
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China. Electronic address: loulq@njau.edu.cn.
Rengel Z
The UWA Institute of Agriculture, and UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia.
Cai QS
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.

MeSH

ArsenicCadmiumEdible GrainPlant LeavesSoil PollutantsTriticum

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30833251

Citation

Shi, Gao Ling, et al. "Accumulation and Distribution of Arsenic and Cadmium in Winter Wheat (Triticum Aestivum L.) at Different Developmental Stages." The Science of the Total Environment, vol. 667, 2019, pp. 532-539.
Shi GL, Li DJ, Wang YF, et al. Accumulation and distribution of arsenic and cadmium in winter wheat (Triticum aestivum L.) at different developmental stages. Sci Total Environ. 2019;667:532-539.
Shi, G. L., Li, D. J., Wang, Y. F., Liu, C. H., Hu, Z. B., Lou, L. Q., Rengel, Z., & Cai, Q. S. (2019). Accumulation and distribution of arsenic and cadmium in winter wheat (Triticum aestivum L.) at different developmental stages. The Science of the Total Environment, 667, 532-539. https://doi.org/10.1016/j.scitotenv.2019.02.394
Shi GL, et al. Accumulation and Distribution of Arsenic and Cadmium in Winter Wheat (Triticum Aestivum L.) at Different Developmental Stages. Sci Total Environ. 2019 Jun 1;667:532-539. PubMed PMID: 30833251.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Accumulation and distribution of arsenic and cadmium in winter wheat (Triticum aestivum L.) at different developmental stages. AU - Shi,Gao Ling, AU - Li,Dao Jun, AU - Wang,Yu Feng, AU - Liu,Chang Hao, AU - Hu,Zhu Bing, AU - Lou,Lai Qing, AU - Rengel,Zed, AU - Cai,Qing Sheng, Y1 - 2019/02/26/ PY - 2018/11/02/received PY - 2019/02/25/revised PY - 2019/02/25/accepted PY - 2019/3/6/pubmed PY - 2019/4/6/medline PY - 2019/3/6/entrez KW - Arsenic KW - Cadmium KW - Growth stage KW - Remobilization KW - Wheat SP - 532 EP - 539 JF - The Science of the total environment JO - Sci Total Environ VL - 667 N2 - Arsenic (As) and cadmium (Cd) are known to be toxic to humans, and elevated concentrations have been documented in food crops worldwide. However, little is known regarding their uptake, translocation, and distribution in wheat plants during plant development. A series of experiments were conducted to investigate the spatial distribution and dynamics of As and Cd in two wheat cultivars (cv. JN12 and JM85; the latter is a low grain Cd accumulator) at different developmental stages. Root concentrations of As decreased by 84%, and those of Cd by 67%, from tillering to maturity. In contrast, As concentrations in the stems increased 3.1-fold. A significant decrease in root As accumulation was observed at the mature stage, whereas root Cd accumulation decreased largely at the elongation stage. The concentrations of Cd in all leaves and As in new leaves increased as plant growth advanced. However, As concentrations in old leaves decreased significantly from grain filling to maturity. In both cultivars, the upward transfer toward younger parts of shoots was greater in the case of Cd than of As. The remobilization of As and Cd from stems and roots differed between the two cultivars. Arsenic concentrations in rachis, glumes, and grain in JM85 were significantly higher than those in JN12, whereas As concentrations in roots and stems did not differ between the cultivars. Grain Cd was significantly higher in JN12 than in JM85, but Cd concentrations in rachis and glumes were similar between the cultivars. The difference in grain Cd concentration between the two cultivars depended on root and stem Cd remobilization and redistribution from rachis to glumes and grain; in contrast, accumulation of As in grain was influenced by As remobilization from the leaves and stem to the spike. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/30833251/Accumulation_and_distribution_of_arsenic_and_cadmium_in_winter_wheat__Triticum_aestivum_L___at_different_developmental_stages_ DB - PRIME DP - Unbound Medicine ER -