Microbe-Assisted Rhizoremediation of Hydrocarbons and Growth Promotion of Chickpea Plants in Petroleum Hydrocarbons-Contaminated Soil

Muhammad Hayder Ali, Muhammad Imran Khan (), Muhammad Naveed and Muhammad Ayyoub Tanvir
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Muhammad Hayder Ali: Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan
Muhammad Imran Khan: Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan
Muhammad Naveed: Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan
Muhammad Ayyoub Tanvir: Department of Forestry and Range Management, University of Agriculture, Faisalabad 38040, Pakistan

Sustainability, 2023, vol. 15, issue 7, 1-19

Abstract: The present work aimed to develop and investigate microbial consortia for petroleum hydrocarbons (PHCs) detoxification and plant growth improvement in hydrocarbons-contaminated soil. Here, we isolated several bacteria from PHCs-contaminated soils to make bacterial consortia and two of the best consortia were tested in a pot experiment to evaluate their potential for PHCs removal and chickpea growth promotion in PHCs-contaminated soil. Results demonstrated that the PHCs exerted considerable phytotoxic effects on chickpea growth and physiology by causing a 13–29% and a 12–43% reduction in agronomic and physiological traits, respectively. However, in the presence of bacterial consortia, the phytotoxicity of PHCs to chickpea plants was minimized, resulting in a 7.0–24% and a 6.0–35% increase in agronomic and physiological traits, respectively over un-inoculated controls. Bacterial consortia also boosted nutrient uptake and the antioxidant mechanism of the chickpea. In addition, chickpea plants alone phytoremediated 52% of initial PHCs concentration. The addition of bacterial consortia in the presence of chickpea plants could remove 74–80% of the initial PHCs concentration in soil. Based on our research findings, we suggest that the use of multi-trait bacterial consortia could be a sustainable and environmentally friendly strategy for PHCs remediation and plant growth promotion in hydrocarbons in contaminated soil.

Keywords: petroleum hydrocarbons; phytotoxicity; bacterial consortium; phytoremediation; chickpea (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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