Journal Article

Copper-induced oxidative stress, initiation of antioxidants and phytoremediation potential of flax (Linum usitatissimum L.) seedlings grown under the mixing of two different soils of China

Khan, Shahid Ullah, Hossain, Akbar, Saleem, Muhammad Hamzah, Sabagh, Ayman EL, Ullah, Abid, Llanes, Analía, Fahad, Shah, Din, Mairaj, Liu, Lijun

2020

Overview

Flax ( Linum usitatissimum L.), one of the oldest cultivated crops, continues to be widely grown for oil, fiber and food. Furthermore, the plants show a metal tolerance dependent on species so is ideal for research. Present study was conducted to find out the influence of copper (Cu) toxicity on plant biomass, growth, chlorophyll content, malondialdehyde (MDA) contents, proline production, antioxidative enzymes and metal up taken by L. usitatissimum from the soil grown under mixing of Cu-contaminated soil with natural soil by 0:1 (control), 1:0, 1:1, 1:2 and 1:4. Results revealed that, high concentration of Cu in the soil affected plant growth and development by reducing plant height, plant diameter and plant fresh and dry biomass and chlorophyll contents in the leaves compared with the control. Furthermore, Cu in excess causes generation of reactive oxygen species (ROS) such as superoxide radical (O – ) and hydroxyl radicals (OH), which is manifested by high malondialdehyde (MDA) and proline contents also. The increasing activities of superoxidase dismutase (SOD) and peroxidase (POD) in the roots and leaves of L. usitatissimum are involved in the scavenging of ROS. Results also showed that L. usitatissimum also has capability to revoke large amount of Cu from the contaminated soil. As Cu concentration in the soil increases, the final uptake of Cu concentration by L. usitatissimum increases. Furthermore, the soil chemical parameters (pH, electrical conductivity and cation exchange capacity) were increasing to highest levels as the ratio of Cu concentration to the natural soil increases. Thus, Cu-contaminated soil is amended with the addition of natural soil significantly reduced plant growth and biomass, while L. usitatissimum is able to revoke large amount of Cu from the soil and could be grown as flaxseed and a potential candidate for phytoremediation of Cu.

• Publisher: Springer Berlin Heidelberg,Springer Nature B.V
• Subject: antioxidant enzymes / Antioxidants / Antioxidants - chemistry / Antioxidants - metabolism / Aquatic Pollution / Atmospheric Protection/Air Quality Control/Air Pollution / Biodegradation, Environmental / Biomass / Cation exchange / cation exchange capacity / Cation exchanging / China / Chlorophyll / Copper / Copper - analysis / Copper - chemistry / crops / Earth and Environmental Science / Ecotoxicology / Electrical conductivity / Electrical resistivity / Environment / Environmental Chemistry / Environmental Health / Environmental science / enzyme activity / Flax / Flax - chemistry / Food plants / Free radicals / Hydroxyl radicals / leaf chlorophyll content / Leaves / linseed / Linum usitatissimum / Malondialdehyde / metal tolerance / oils / Organic chemistry / Oxidative stress / Oxidative Stress - physiology / Peroxidase / phytomass / Phytoremediation / Plant biomass / plant development / Plant growth / plant height / Plant Roots - chemistry / polluted soils / Proline / Reactive oxygen species / Research Article / roots / Scavenging / Seedlings / Soil / Soil chemistry / Soil contamination / Soil Pollutants / Soil pollution / Soils / Superoxide / superoxide anion / superoxide dismutase / Toxicity / Waste Water Technology / Water Management / Water Pollution Control