Interaction effects of magnetized water irrigation and wounding stress on Cd phytoremediation effect of Arabidopsis halleri

Abstract

In this study, the phytoremediation efficiency of Arabidopsis halleri L. in response to mechanical injury were compared between those irrigated with magnetized water and those irrigated with normal water. Under normal irrigation treatment, wounding stress increased malondialdehyde (MDA) concentrations and hydrogen peroxide (H₂O₂) levels in A. halleri leaves significantly, by 46.7–86.1% and 39.4–77.4%, respectively, relative to those in the intact tissues. In addition, wounding stresses decreased the content of Cd in leaves by 26.8–52.2%, relative to the control, indicating that oxidative damage in plant tissues was induced by mechanical injury, rather than Cd accumulation. There were no significant differences in MDA and H₂O₂ between A. halleri irrigated with magnetized water and with normal water under wounding conditions; however, the activities of catalase (CAT), ascorbate peroxidase (APX), and superoxide dismutase (SOD) in the leaves of plants treated with magnetized water were significantly increased by 25.1–56.7%, 47.3–183.6%, and 44.2–109.4%, respectively. Notably, under the magnetic field, the phytoremediation effect of 30% wounded A. halleri nearly returned to normal levels. We find that irrigation with magnetized water is an economical pathway to improve the tolerance of A. halleri to inevitable mechanical injury and may recover its phytoremediation effect.

Keywords:

• Environmental stress
• magnetic field
• phytoextraction

Authors’ contributions

Weiheng Sun: formal analysis, writing - Original Draft; Yue He: investigation, formal analysis, writing - Review & Editing; Yuping Deng: investigation, writing - Original Draft; Yuwei Hu: formal analysisl; Min Cao: writing - Review & Editing; Jie Luo: conceptualization, methodology, validation, writing - Review & Editing, supervision, funding acquisition.

Disclosure statement

None of the authors have any competing interests.

Data availability statement

The datasets used or analyzed during the current study are available from the corresponding author on reasonable request. All data generated or analyzed during this study are included in this published article.

Additional information

Funding

The authors thank the National Natural Science Foundation of China (Project No. 21876014) for financial support to carry out this study.