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Bacillus Thuringiensis Enhances the Ability of Ryegrass to Remediate Cadmium-Contaminated Soil

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  • Jiyuan Jin

    (Power China of Chengdu Engineering Corporation Limited, Chengdu 611130, China
    College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, China)

  • Ruidong Mi

    (Power China of Chengdu Engineering Corporation Limited, Chengdu 611130, China)

  • Qiao Li

    (Power China of Chengdu Engineering Corporation Limited, Chengdu 611130, China)

  • Jian Lang

    (Power China of Chengdu Engineering Corporation Limited, Chengdu 611130, China)

  • Yushu Lan

    (College of Environment Sciences, Sichuan Agricultural University, Chengdu 611130, China)

  • Na Huang

    (College of Environment Sciences, Sichuan Agricultural University, Chengdu 611130, China)

  • Gang Yang

    (College of Environment Sciences, Sichuan Agricultural University, Chengdu 611130, China)

Abstract

Phytoremediation technology has been widely used for the remediation of heavy metals in soil due to its favorable environmental and ecological effects, but establishing a single phytoremediation technology can result in bottlenecks, such as a long cycle, low biomass, and difficulty in root absorption. At present, inoculation with microorganisms that could assist plants in their remediation of contaminated soils is attracting increasing attention. Therefore, in this study we selected ryegrass and Bacillus thuringiensis (SY) and analyzed the effects of SY inoculation on the growth of ryegrass, including the accumulation of Cd in ryegrass, changes in heavy metal forms, and the heavy metal content in rhizosphere soil, using pot experiments. The results indicate that SY inoculation promotes root growth and development of the ryegrass and the accumulation of cadmium in the plants. In addition, SY inoculation increased the levels of soil nutrients and the activities of soil urease, sucrase, and alkaline phosphatase. This study reveals that the use of SY improves the remediation efficiency of ryegrass for cadmium-contaminated soil, and supports the application potential of microorganisms in soil remediation technology.

Suggested Citation

  • Jiyuan Jin & Ruidong Mi & Qiao Li & Jian Lang & Yushu Lan & Na Huang & Gang Yang, 2023. "Bacillus Thuringiensis Enhances the Ability of Ryegrass to Remediate Cadmium-Contaminated Soil," Sustainability, MDPI, vol. 15(6), pages 1-10, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:5177-:d:1097475
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    1. Ruchita Dixit & Wasiullah & Deepti Malaviya & Kuppusamy Pandiyan & Udai B. Singh & Asha Sahu & Renu Shukla & Bhanu P. Singh & Jai P. Rai & Pawan Kumar Sharma & Harshad Lade & Diby Paul, 2015. "Bioremediation of Heavy Metals from Soil and Aquatic Environment: An Overview of Principles and Criteria of Fundamental Processes," Sustainability, MDPI, vol. 7(2), pages 1-24, February.
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