IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v16y2019i9p1624-d229616.html
   My bibliography  Save this article

Silicon Amendment Reduces Soil Cd Availability and Cd Uptake of Two Pennisetum Species

Author

Listed:
  • Qiyu Dong

    (Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Tropical Agro-Environment, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China)

  • Jianbo Fang

    (College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China)

  • Fei Huang

    (Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Tropical Agro-Environment, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China)

  • Kunzheng Cai

    (Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Tropical Agro-Environment, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China)

Abstract

Silicon (Si) plays important roles in alleviating heavy metal stress, but the migrating effects and mechanisms, especially for Pennisetum , are not well studied. In this study, Pennisetum glaucum and Pennisetum glaucum × P. purpureum were used to explore the impacts of Si application on alleviating cadmium (Cd) toxicity and its possible mechanism. Treatments consist of four levels of Cd (0, 10, 50, and 100 mg·kg −1 ) with or without 2.0 mM Si amendments. Under Cd stress, Si application significantly increased plant biomass and Si content, reduced Cd content, and decreased the enrichment factor in shoots and roots. Si treatment also increased soil pH and soil residual Cd, while reducing available/oxidizable/reducible Cd content in soil at 50 and 100 mg·kg −1 Cd levels, thereby leading to a reduction of the soil’s available Cd. These findings indicate that Si application is effective in alleviating Cd phytotoxicity of Pennisetum , mainly through reducing plant Cd uptake and increasing soil pH and Cd immobilization, thereby reducing Cd bioavailability.

Suggested Citation

  • Qiyu Dong & Jianbo Fang & Fei Huang & Kunzheng Cai, 2019. "Silicon Amendment Reduces Soil Cd Availability and Cd Uptake of Two Pennisetum Species," IJERPH, MDPI, vol. 16(9), pages 1-13, May.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:9:p:1624-:d:229616
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/16/9/1624/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/16/9/1624/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Sitong Gong & Hu Wang & Fei Lou & Ran Qin & Tianling Fu, 2022. "Calcareous Materials Effectively Reduce the Accumulation of Cd in Potatoes in Acidic Cadmium-Contaminated Farmland Soils in Mining Areas," IJERPH, MDPI, vol. 19(18), pages 1-14, September.
    2. Samavia Mubeen & Wenjuan Ni & Chuntao He & Zhongyi Yang, 2023. "Agricultural Strategies to Reduce Cadmium Accumulation in Crops for Food Safety," Agriculture, MDPI, vol. 13(2), pages 1-31, February.
    3. Meiliang Dong & Rong Huang & Peng Mao & Long Lei & Yongxing Li & Yingwen Li & Hanping Xia & Zhian Li & Ping Zhuang, 2021. "Immobilization of Cadmium by Molecular Sieve and Wollastonite Is Soil pH and Organic Matter Dependent," IJERPH, MDPI, vol. 18(10), pages 1-17, May.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:16:y:2019:i:9:p:1624-:d:229616. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.