Study of the phytotoxicity of margines on Pistia stratiotes L

• Published in: Open Chemistry Vol. 22; no. 1; pp. 3319 - 91
• Main Authors: Ajdi, Mouhcine, Gaga, Younes, Assouguem, Amine, Kara, Mohammed, Benmessaoud, Safaa, Ullah, Riaz, Ali, Essam A., Skender, Azra, Singh, Jyoti, Bahhou, Jamila
• Format: Journal Article
• Language: English
• Published: De Gruyter 25.04.2024
• Subjects: eutrophication; Fez river; olive mill wastewater; phytotoxicity; pistia stratiotes l
• ISSN: 2391-5420; 2391-5420
• DOI: 10.1515/chem-2024-0027

The olive trituration activity is one of the most important industrial activities in Fez, Morocco. These effluents are highly loaded with organic, inorganic, and phenolic compounds without any preliminary treatment that affects water quality. In this sense, the waters of Oued Fez are deteriorating due to the discharge of wastewater from oil mills and the excessive proliferation of L., an invasive macrophyte that represents a significant stress to the aquatic ecosystem, eutrophication, and a reduction in biodiversity. This ecological situation has prompted us to carry out phytotoxicity bioassays based on the detection of the lethal concentration of in the wastewater from the olive oil mill to evaluate the sensitivity and tolerance of macrophytes to the different concentrations of total polyphenols (TPP) present in the olive mill wastewater. To estimate their impact on the environment. Fresh whole plants of were exposed to varying concentrations of olive oil mill wastewater with a series of TPP concentrations (0–30 mg/l) for 1 week in the natural environment. The results also show that is able to grow rapidly in culture with 20 mg/l of TPP; the highest growth of wet weight of occurred at 20 mg/l treatment with an average of 13 g wet weight increase. At 0 mg/l, treatment is known to cause very slow growth with an average of 2 g. Olive oil mill wastewater was toxic to the plant at concentrations higher than 30 mg/l, and the phytotoxic effect was manifested by retardation of growth, detachment of roots, wilting, and chlorosis of leaves. This indicates that polyphenols have great potential to inhibit the proliferation of in aquatic environments.