Physiological Responses and Adaptations of the Halophyte Atriplex halimus to Soil Contaminated with Cd, Ni, and NaCl

Soil Systems

article

Shumailah Ishtiyaq¹  Harsh Kumar²  Rohan J. D’Souza¹  Mayank Varun³  Paulo J. C. Favas⁴  Manoj S. Paul¹ 

[1] Department of Botany, St. John’s College, Dr. B.R. Ambedkar University;Department of Microbiology, School of Life Sciences, Dr. B.R. Ambedkar University;Department of Botany, Hislop College;School of Life Sciences and the Environment, University of Trás-os-Montes e Alto Douro—UTAD;MARE—Marine and Environmental Sciences Centre/ARNET—Aquatic Research Network, Department of Life Sciences, University of Coimbra

关键词: halophytes;    saline soil;    phytoremediation;    phytoextraction;    osmoprotectants;    ROS;    antioxidants;   

DOI  :  10.3390/soilsystems7020046

学科分类：电子与电气工程

来源: mdpi

【 摘 要 】

Soils contaminated with potentially toxic elements (PTEs) and salt manifest a large number of physical, chemical, and structural problems by various processes such as reduced water availability, water and air movement in soil space, water holding capacity of soil, as well as perilous effects on plant growth and physiology. Halophytes have the ability to grow in saline environments and are better adapted to accommodate environmental constraints including PTE ions. An experiment was designed to study the response of the halophyte Atriplex halimus to a range of salinities and different concentrations of Cd and Ni. Tolerance and soil remedial potential of the plant were quantified in terms of PTE uptake and portioning, plant biomass, root/shoot ratio, chlorophyll and anti-oxidative enzyme production, along with stress markers such as lipid peroxidation, proline, and glycine betaine. The plant was also evaluated for its potential to phytoremediate PTE contaminated soil. The results suggest that A. halimus can tolerate moderate concentrations of both the PTEs and salt. The species holds promise for bio-reclamation of saline and PTE-contaminated soil.

【 授权许可】

CC BY