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New Evidence of Semi-Mangrove Plant Barringtonia racemosa in Soil Clean-Up: Tolerance and Absorption of Lead and Cadmium

Author

Listed:
  • Fang Liang

    (College of Biology and Pharmacy, Yulin Normal University, Yulin 537000, China
    Key Laboratory for Conservation and Utilization of Subtropical Bio-Resources, Education Department of Guangxi Zhuang Autonomous Region, Yulin Normal University, Yulin 537000, China
    These authors contributed equally to this work.)

  • Ju Hu

    (College of Biology and Pharmacy, Yulin Normal University, Yulin 537000, China
    Key Laboratory for Conservation and Utilization of Subtropical Bio-Resources, Education Department of Guangxi Zhuang Autonomous Region, Yulin Normal University, Yulin 537000, China
    These authors contributed equally to this work.)

  • Bing Liu

    (Forestry of College, Guangxi University, Nanning 530001, China
    These authors contributed equally to this work.)

  • Lin Li

    (College of Biology and Pharmacy, Yulin Normal University, Yulin 537000, China)

  • Xiuling Yang

    (College of Biology and Pharmacy, Yulin Normal University, Yulin 537000, China)

  • Caihong Bai

    (College of Biology and Pharmacy, Yulin Normal University, Yulin 537000, China
    Key Laboratory for Conservation and Utilization of Subtropical Bio-Resources, Education Department of Guangxi Zhuang Autonomous Region, Yulin Normal University, Yulin 537000, China)

  • Xiaohui Tan

    (Guangxi Subtropical Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530001, China)

Abstract

Mangrove plants play an important role in the remediation of heavy-metal-contaminated estuarine and coastal areas; Barringtonia racemosa is a typical semi-mangrove plant. However, the effect of heavy metal stress on this plant has not been explored. In this study, tolerance characteristics and the accumulation profile of cadmium (Cd) and lead (Pb) in B. racemosa were evaluated. The results indicated that B. racemosa exhibited a high tolerance in single Cd/Pb and Cd + Pb stress, with a significant increase in biomass yield in all treatment groups, a significant increase in plant height, leaf area, chlorophyll and carotenoid content in most treatment groups and without significant reduction of SOD, POD, MDA, proline content, Chl a, Chl b, Chl a + b, Car, ratio of Chl a:b and ratio of Car:Chl (a + b). Cd and Pb mainly accumulated in the root (≥93.43%) and the content of Cd and Pb in B. racemosa was root > stem > leaf. Pb showed antagonistic effects on the Cd accumulation in the roots and Cd showed antagonistic or synergistic effects on the Pb accumulation in the roots, which depended on the concentration of Cd and Pb. There was a significant synergistic effect of Cd and Pb enrichment under a low Cd and Pb concentration treatment. Thus, phytoremediation could potentially use B. racemosa for Cd and Pb.

Suggested Citation

  • Fang Liang & Ju Hu & Bing Liu & Lin Li & Xiuling Yang & Caihong Bai & Xiaohui Tan, 2022. "New Evidence of Semi-Mangrove Plant Barringtonia racemosa in Soil Clean-Up: Tolerance and Absorption of Lead and Cadmium," IJERPH, MDPI, vol. 19(19), pages 1-14, October.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:19:p:12947-:d:937721
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    References listed on IDEAS

    as
    1. Wei Jiao & Yong Niu & Yuan Niu & Hengyu Hu & Ruiping Li, 2018. "Spatial Assessment of Anthropogenic Impact on Trace Metal Accumulation in Farmland Soils from a Rapid Industrializing Region, East China," IJERPH, MDPI, vol. 15(9), pages 1-12, September.
    2. Fajin Chen & Jing Lin & Bihua Qian & Zhai Wu & Peng Huang & Kai Chen & Tianyao Li & Minggang Cai, 2018. "Geochemical Assessment and Spatial Analysis of Heavy Metals in the Surface Sediments in the Eastern Beibu Gulf: A Reflection on the Industrial Development of the South China Coast," IJERPH, MDPI, vol. 15(3), pages 1-12, March.
    3. Guanghui Guo & Mei Lei & Yanwen Wang & Bo Song & Jun Yang, 2018. "Accumulation of As, Cd, and Pb in Sixteen Wheat Cultivars Grown in Contaminated Soils and Associated Health Risk Assessment," IJERPH, MDPI, vol. 15(11), pages 1-17, November.
    4. Yang Yu & Haijiang Luo & Lihuan He & Wenqing Liu & Renji Xu & Linlin Zhang & Guihua Dong & Yeyao Wang & Guoping Wu & Fusheng Wei, 2020. "Level, Source, and Spatial Distribution of Potentially Toxic Elements in Agricultural Soil of Typical Mining Areas in Xiangjiang River Basin, Hunan Province," IJERPH, MDPI, vol. 17(16), pages 1-14, August.
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