Detoxifying the heavy metals: a multipronged study of tolerance strategies against heavy metals toxicity in plants

Frontiers in Plant Science

Plant Science

António Raposo¹  Linda Heejung Lho²  Heesup Han³  Noreen Khalid⁴  Zarrin Fatima Rizvi⁴  Ujala Ejaz⁵  Zeeshan Ahmad⁵  Sadia Jehangir⁵  Shujaul Mulk Khan⁶ 

[1] CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Lisboa, Portugal;College of Business, Division of Tourism and Hotel Management, Cheongju University, Cheongju-si, Chungcheongbuk-do, Republic of Korea;College of Hospitality and Tourism Management, Sejong University, Seoul, Republic of Korea;Department of Botany, Government College Women University, Sialkot, Pakistan;Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan;Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan;Member Pakistan Academy of Sciences, Islamabad, Pakistan;

关键词: heavy metal stress;    plant defense mechanisms;    genomics and transcriptomics;    cell signaling pathways;    plant structural and functional biology;   

DOI  :  10.3389/fpls.2023.1154571

 received in 2023-01-30, accepted in 2023-04-06,  发布年份 2023

来源: Frontiers

【 摘 要 】

Heavy metal concentrations exceeding permissible limits threaten human life, plant life, and all other life forms. Different natural and anthropogenic activities emit toxic heavy metals in the soil, air, and water. Plants consume toxic heavy metals from their roots and foliar part inside the plant. Heavy metals may interfere with various aspects of the plants, such as biochemistry, bio-molecules, and physiological processes, which usually translate into morphological and anatomical changes. They use various strategies to deal with the toxic effects of heavy metal contamination. Some of these strategies include restricting heavy metals to the cell wall, vascular sequestration, and synthesis of various biochemical compounds, such as phyto-chelators and organic acids, to bind the free moving heavy metal ions so that the toxic effects are minimized. This review focuses on several aspects of genetics, molecular, and cell signaling levels, which integrate to produce a coordinated response to heavy metal toxicity and interpret the exact strategies behind the tolerance of heavy metals stress. It is suggested that various aspects of some model plant species must be thoroughly studied to comprehend the approaches of heavy metal tolerance to put that knowledge into practical use.

【 授权许可】

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Copyright © 2023 Ejaz, Khan, Khalid, Ahmad, Jehangir, Fatima Rizvi, Lho, Han and Raposo