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Effects of Boron Application on Absorption of Cadmium and Other Mineral Elements of Wheat

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Abstract

Boron (B) is a microelement and has been demonstrated to alleviate cadmium (Cd) stress and inhibit Cd uptake in wheat. However, the effect of B on accumulation of Cd and mineral elements accumulation in wheat are rarely investigated. A hydroponics experiment was performed with different treatments (CK for without B and Cd application, Cd + B, preB + Cd for B, Cd, and B was added 24 h earlier than Cd added) to explore the effect of B on the growth, subcellular component distribution of Cd, and the mineral distribution. Here, the dry weight of shoot and root were decreased under Cd application compared with CK treatment, while increased under B application, especially under preB + Cd treatment. The root parameters showed a similar trend, including surface area, root length and volume, and tips. The Cd concentrations increased under Cd application in root and shoot, while decreased under B application, especially under preB + Cd treatment in the root. In addition, the B concentration showed a decreasing trend under Cd stress, especially in roots. Subcellular component analysis showed that more than 50% Cd was distributed in soluble fractions in the root, while more than 40% Cd of cell wall (CW) fractions in the shoot, respectively. This suggests that CW fractions and soluble fractions are the main Cd storage sites. The correlation analysis was also discussed among B, Cd, and other elements. Thus, we concluded that Cd toxicity was alleviated under B application in wheat by inhibiting Cd uptake, non-organ distribution, and changing nutrient absorption.

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Funding

This work was financed by the Chinese State Natural Science Foundation and the Scientific Technological Key Projects of Henan Province, the contracts No 32002128 and No 212102310979.

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All authors contributed to the study’s conception and design. Material preparation, data collection, and analysis were performed by Y.F., M.X., H.L., P.Z., F.S., S.Q., and G.L. The first draft of the manuscript was written by S.Q., and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Shiyu Qin or Guiyun Luan.

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The authors declare no competing interests.

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Feng, Y., Xie, M., Liu, H. et al. Effects of Boron Application on Absorption of Cadmium and Other Mineral Elements of Wheat. J Soil Sci Plant Nutr (2024). https://doi.org/10.1007/s42729-024-01813-x

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  • DOI: https://doi.org/10.1007/s42729-024-01813-x

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