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Exogenous GR24 Alleviates Cadmium Toxicity by Reducing Cadmium Uptake in Switchgrass ( Panicum virgatum ) Seedlings

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  • Zhenglan Tai

    (College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, China
    These authors contributed equally to this work.)

  • Xinqiang Yin

    (College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, China
    These authors contributed equally to this work.)

  • Zhigang Fang

    (College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, China
    Kashghar University, 844006 Kashghar, China)

  • Gaoling Shi

    (Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, 210014 Nanjing, China)

  • Laiqing Lou

    (College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, China)

  • Qingsheng Cai

    (College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, China)

Abstract

Strigolactones (SLs) are classified into plant hormones, playing a key role as a mediator of plant growth in response to several abiotic stresses, including drought and salinity. However, the role of SLs in cadmium (Cd)-induced stress to plants is still unknown. The physiological responses of switchgrass ( Panicum virgatum ) stressed in 10 μmol L -1 Cd to exogenous synthetic SLs analog, GR24 were studied in hydroponics. The Cd stress significantly caused the adverse effects on plant growth and root morphology, inhibited photosynthesis, but boosted lipid peroxidation of Switchgrass seedlings. After treatment of 1 μmol L -1 GR24, the above adverse effects caused by Cd stress were significantly alleviated, mainly reflects in improvement of shoot biomass, relative water content, root development, chlorophyll contents, activities of typical antioxidant enzymes, nutrient uptake. The reason for exogenous GR24 alleviating cadmium toxicity might be owing to that exogenous GR24 promoted the content of endogenous SLs, increased some essential element Fe (iron), Zn (zinc), Mn (manganese) and Cu (copper) uptake and reduced cadmium uptake, accumulation and partition in shoot of switchgrass seedlings.

Suggested Citation

  • Zhenglan Tai & Xinqiang Yin & Zhigang Fang & Gaoling Shi & Laiqing Lou & Qingsheng Cai, 2017. "Exogenous GR24 Alleviates Cadmium Toxicity by Reducing Cadmium Uptake in Switchgrass ( Panicum virgatum ) Seedlings," IJERPH, MDPI, vol. 14(8), pages 1-12, July.
    • Handle: RePEc:gam:jijerp:v:14:y:2017:i:8:p:852-:d:106277
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    References listed on IDEAS

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    1. Jingjie Wang & Nan Yu & Guangmao Mu & Kamran I. Shinwari & Zhenguo Shen & Luqing Zheng, 2017. "Screening for Cd-Safe Cultivars of Chinese Cabbage and a Preliminary Study on the Mechanisms of Cd Accumulation," IJERPH, MDPI, vol. 14(4), pages 1-10, April.
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    1. repec:caa:jnlcjg:v:preprint:id:88-2023-cjgpb is not listed on IDEAS
    2. Mohd Asgher & Abdul Rehaman & Syed Nazar ul Islam & Mohd Arshad & Nafees A. Khan, 2023. "Appraisal of Functions and Role of Selenium in Heavy Metal Stress Adaptation in Plants," Agriculture, MDPI, vol. 13(5), pages 1-21, May.
    3. Mohd. Kamran Khan & Anamika Pandey & Mehmet Hamurcu & Tomáš Vyhnánek & Sajad Majeed Zargar & Abdullah Kahraman & Ali Topal & Sait Gezgin, 2024. "Exploring strigolactones for inducing abiotic stress tolerance in plants," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 60(2), pages 55-69.

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