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Abstract <p>Crude oil pollution presents a substantial environmental hazard to soil and plant life. While the adverse impacts of crude oil pollution have been documented in certain plant species, the effects on morphological, physiological, and anatomical properties remain poorly understood. This study seeks to investigate the physiological and anatomical responses of <i>Datura</i> <i>stramonium</i> L. exposed to different concentrations of crude oil contamination at 0, 1.5, 3, 4.5, and 6 mL/kg soil. After a 2-month growth period, <i>D. stramonium</i> decreased the Total Petroleum Hydrocarbon (TPH) residue by 45% w/w in soil treated with 6 mL/kg crude oil. Crude oil contamination significantly reduced the fresh and dry weights of both shoots and roots, as well as the leaf area, root length, and plant height. Remediation resulted in changes in the stem diameter, epidermis diameter, collenchyma diameter, parenchyma layer diameter in the cortex, and the xylem diameter. In addition to the visible morphological and anatomical changes, carbohydrates (66%), chlorophyll <i>a</i> (40%), chlorophyll <i>b</i> (43%), total chlorophyll (42%), and carotenoids (68%) were reduced. The decrease was linked to the level of oil pollution in an inverse relationship. There was a rise in the contents of total protein of root and shoot, and antioxidant enzyme activities such as root and shoot polyphenol oxidase and peroxidase activity. The capacity of <i>D. stramonium</i> to break down TPH and maintain plant functional traits in the presence of crude oil pollution suggests that this species is suitable for decontaminating soil from crude oil.</p>

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Adaptation of Jimsonweed to Crude Oil: Physiological and Morphoanatomical Responses

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • Sh. Gholipour Asle Maragheh,
  • F. Najafi,
  • Z. Shirkhani

摘要

Abstract

Crude oil pollution presents a substantial environmental hazard to soil and plant life. While the adverse impacts of crude oil pollution have been documented in certain plant species, the effects on morphological, physiological, and anatomical properties remain poorly understood. This study seeks to investigate the physiological and anatomical responses of Datura stramonium L. exposed to different concentrations of crude oil contamination at 0, 1.5, 3, 4.5, and 6 mL/kg soil. After a 2-month growth period, D. stramonium decreased the Total Petroleum Hydrocarbon (TPH) residue by 45% w/w in soil treated with 6 mL/kg crude oil. Crude oil contamination significantly reduced the fresh and dry weights of both shoots and roots, as well as the leaf area, root length, and plant height. Remediation resulted in changes in the stem diameter, epidermis diameter, collenchyma diameter, parenchyma layer diameter in the cortex, and the xylem diameter. In addition to the visible morphological and anatomical changes, carbohydrates (66%), chlorophyll a (40%), chlorophyll b (43%), total chlorophyll (42%), and carotenoids (68%) were reduced. The decrease was linked to the level of oil pollution in an inverse relationship. There was a rise in the contents of total protein of root and shoot, and antioxidant enzyme activities such as root and shoot polyphenol oxidase and peroxidase activity. The capacity of D. stramonium to break down TPH and maintain plant functional traits in the presence of crude oil pollution suggests that this species is suitable for decontaminating soil from crude oil.