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Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot ( Daucus carota L.) under Lead Stress

Author

Listed:
  • Muhammad Awais Ghani

    (Institute of Horticultural Sciences, University of Agriculture, Faisalabad 38040, Pakistan)

  • Muhammad Mehran Abbas

    (Institute of Horticultural Sciences, University of Agriculture, Faisalabad 38040, Pakistan)

  • Basharat Ali

    (Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan)

  • Rukhsanda Aziz

    (Department of Environmental Science, International Islamic University, Islamabad 44000, Pakistan)

  • Rashad Waseem Khan Qadri

    (Institute of Horticultural Sciences, University of Agriculture, Faisalabad 38040, Pakistan)

  • Anam Noor

    (Institute of Horticultural Sciences, University of Agriculture, Faisalabad 38040, Pakistan)

  • Muhammad Azam

    (Institute of Horticultural Sciences, University of Agriculture, Faisalabad 38040, Pakistan)

  • Saleem Bahzad

    (Institute of Horticultural Sciences, University of Agriculture, Faisalabad 38040, Pakistan)

  • Muhammad Hamzah Saleem

    (College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China)

  • Muyassar H. Abualreesh

    (Department of Marine Biology, Faculty of Marine Sciences, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia)

  • Aishah Alatawi

    (Biology Department, Faculty of Science, Tabuk University, Tabuk 71421, Saudi Arabia)

  • Shafaqat Ali

    (Department of Environmental Sciences, Government College University, Faisalabad 38000, Pakistan
    Department of Biological Sciences and Technology, China Medical University, Taichung 40402, Taiwan)

Abstract

Toxicity of heavy-metals in soil is a major constraint for the production of carrots ( Daucus carota L.). Different plant growth regulators are being used to overcome this problem. It has been found that plant growth regulators induce stress tolerance in plants. In this study, the role of exogenously applied plant growth regulator, gibberellic acid (GA 3 ) was examined in soil grown two carrot cultivars under four different levels of lead (0, 50, 100, and 150 mg/kg) with one level of gibberellic acid (50 ppm). Results showed that Pb stress retarded the plant growth and reduced chlorophyll contents in the leaves of both carrot cultivars. A significant decrease was observed in photosynthetic attributes by Pb addition alone. However, exogenously applied GA 3 ameliorated the plant growth and chlorophyll contents in the leaves of both carrot cultivars under Pb stressed conditions. Moreover, GA 3 also decreased the uptake of Pb concentration in carrot leaves and roots. In addition, GA 3 significantly regulated the phenolic compounds concentration in both carrot cultivars under Pb stress. In this study, cultivar T-29 was found to be more tolerant to Pb stress, however, cultivar Mevarick experienced higher damage regarding plant growth under Pb stress.

Suggested Citation

  • Muhammad Awais Ghani & Muhammad Mehran Abbas & Basharat Ali & Rukhsanda Aziz & Rashad Waseem Khan Qadri & Anam Noor & Muhammad Azam & Saleem Bahzad & Muhammad Hamzah Saleem & Muyassar H. Abualreesh & , 2021. "Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot ( Daucus carota L.) under Lead Stress," Sustainability, MDPI, vol. 13(21), pages 1-13, November.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:21:p:12329-:d:674605
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    References listed on IDEAS

    as
    1. Ihsan Elahi Zaheer & Shafaqat Ali & Muhammad Hamzah Saleem & Iqra Noor & Mohamed A. El-Esawi & Kashif Hayat & Muhammad Rizwan & Zohaib Abbas & Mohamed A. El-Sheikh & Mohammed Nasser Alyemeni & Leonard, 2020. "Iron–Lysine Mediated Alleviation of Chromium Toxicity in Spinach ( Spinacia oleracea L.) Plants in Relation to Morpho-Physiological Traits and Iron Uptake When Irrigated with Tannery Wastewater," Sustainability, MDPI, vol. 12(16), pages 1-23, August.
    2. Farah Tariq & Xiukang Wang & Muhammad Hamzah Saleem & Zafar Iqbal Khan & Kafeel Ahmad & Ifra Saleem Malik & Mudasra Munir & Shehzadi Mahpara & Naunain Mehmood & Tasneem Ahmad & Hafsa Memona & Ilker Ug, 2021. "Risk Assessment of Heavy Metals in Basmati Rice: Implications for Public Health," Sustainability, MDPI, vol. 13(15), pages 1-13, July.
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    Cited by:

    1. Aishah Alatawi & Xiukang Wang & Arosha Maqbool & Muhammad Hamzah Saleem & Kamal Usman & Muhammad Rizwan & Tahira Yasmeen & Muhammad Saleem Arif & Shamaila Noreen & Afzal Hussain & Shafaqat Ali, 2022. "S-Fertilizer (Elemental Sulfur) Improves the Phytoextraction of Cadmium through Solanum nigrum L," IJERPH, MDPI, vol. 19(3), pages 1-19, January.
    2. Nudrat Aisha Akram & Muhammad Hamzah Saleem & Sidra Shafiq & Hira Naz & Muhammad Farid-ul-Haq & Baber Ali & Fahad Shafiq & Muhammad Iqbal & Mariusz Jaremko & Kamal Ahmad Qureshi, 2022. "Phytoextracts as Crop Biostimulants and Natural Protective Agents—A Critical Review," Sustainability, MDPI, vol. 14(21), pages 1-17, November.

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