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Pathway and driving forces of selenite absorption in wheat leaf blades

Author

Listed:
  • Jinyong Yang

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Feiyan Yu

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China)

  • Zihao Fu

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Yihan Fu

    (Agricultural College, Henan Agricultural University, Zhengzhou, Henan, P.R. China)

  • Sinan Liu

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Menglin Chen

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Yajuan Li

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Qizhuang Sun

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Huiqing Chang

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Wenli Zhou

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Xugang Wang

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

  • Lianhe Zhang

    (Agricultural College, Henan University of Science and Technology, Luoyang, Henan, P.R. China
    Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Luoyang, Henan, P.R. China)

Abstract

Selenium (Se) deficiency in the human diet is a widespread problem. Se biofortification of wheat crop by spraying foliage with selenite could effectively increase Se intake by enhancing the Se concentration in wheat grains. However, pathway and driving forces of selenite absorption in wheat leaf blades are not fully understood. In this study, the effects of selenite-applied concentration, selenite-exposed duration, stomatal inhibitors, respiratory inhibitors, and competitive anions on selenite absorption in wheat leaf blades were investigated. The results indicated that the selenite absorption rate increased linearly with increasing selenite concentrations, but it decreased greatly and reached a low level with treatment times of 4 h and longer. Stomatal inhibitors significantly inhibited selenite absorption. Respiratory inhibitors and inorganic phosphate (Pi) strongly inhibited selenite absorption. Therefore, selenite passively enters wheat leaf blades via cuticle and stomata, and then enters mesophyll cells via Pi transporters. Concentration gradients and selenite uptake by mesophyll cells provide continual driving forces for selenite absorption in leaf blades.

Suggested Citation

  • Jinyong Yang & Feiyan Yu & Zihao Fu & Yihan Fu & Sinan Liu & Menglin Chen & Yajuan Li & Qizhuang Sun & Huiqing Chang & Wenli Zhou & Xugang Wang & Lianhe Zhang, 2019. "Pathway and driving forces of selenite absorption in wheat leaf blades," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(12), pages 609-614.
    • Handle: RePEc:caa:jnlpse:v:65:y:2019:i:12:id:542-2019-pse
    DOI: 10.17221/542/2019-PSE
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    Cited by:

    1. Feiyan Yu & Wei Li & Xiaokai Gao & Peng Li & Yihan Fu & Jinyong Yang & Yajuan Li & Huiqing Chang & Wenli Zhou & Xugang Wang & Lianhe Zhang, 2020. "Genotype difference in the physiological characteristics of phosphorus acquisition by wheat seedlings in alkaline soils," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(10), pages 506-512.
    2. Sinan Liu & Feiyan Yu & Zihao Fu & Jinyong Yang & Menglin Chen & Yihan Fu & Yajuan Li & Huiqing Chang & Wenli Zhou & Xugang Wang & Lianhe Zhang, 2020. "Key factors affect selenite absorption in wheat leaf blades: pH, temperature, light intensity and leaf position," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(9), pages 431-436.

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