Effects of PEG-simulated drought stress and selenite treatment on mineral nutrient homeostasis in wheat roots and shoots

Feiyan Yu, Ying Wang, Xue Luo, Kaiwei Li, Jingwen Hou, Gaogao Dai, Huimin Yuan and Lianhe Zhang
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Feiyan Yu: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
Ying Wang: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
Xue Luo: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
Kaiwei Li: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
Jingwen Hou: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
Gaogao Dai: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
Huimin Yuan: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
Lianhe Zhang: Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China

Plant, Soil and Environment, vol. preprint

Abstract: Drought stress severely impairs seed germination and early seedling establishment, and disrupts the uptake and distribution of essential mineral nutrients in plants. This study investigated the effects of polyethylene glycol (PEG)-simulated drought and Na2SeO3 application on the accumulation and redistribution of phosphorus (P), potassium (K), calcium (Ca), sulphur (S), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) in wheat roots and shoots. Under PEG-simulated drought, increasing PEG concentrations resulted in a progressive decline in nutrient concentrations in both roots and shoots, with significant reductions in K, Ca, S, Zn, and Mn in roots, and K, Ca, Mg, and Mn in shoots. However, Na2SeO3 application mitigated these adverse effects by enhancing nutrient redistribution during early seedling growth. Specifically, under 15% PEG-simulated drought stress, Na2SeO3 treatments significantly increased shoot K, Mg, Fe, and Cu concentrations, highlighting selenium's role in facilitating the translocation of these key elements. These results demonstrate that Na2SeO3 effectively mitigates drought-related nutrient imbalances and promotes ion remobilisation from germinating seeds to developing roots and shoots under water-deficient conditions.

Keywords: osmotic stress; selenium supplementation; nutrient redistribution; abiotic stress mitigation; cereal crops (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:preprint:id:300-2025-pse

DOI: 10.17221/300/2025-PSE

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