Cadmium uptake and translocation: selenium and silicon roles in Cd detoxification for the production of low Cd crops: a critical review.

Muhammad Riaz, Muhammad Kamran, Muhammad Rizwan, Shafaqat Ali, Aasma Parveen, Zaffar Malik, Xiurong Wang

Journal: Chemosphere 2021;273():129690

PMID: 33524757

Full Text on Elsevier Science View on PubMed

Abstract

Cadmium (Cd) is a primary contaminant in agricultural soils of the world. The ability of Cd uptake, transport, detoxification, and accumulation varies among different plant species and genotypes. Cd is translocated from soil to root by different transporters which are used for essential plant nutrient uptake. A number of strategies have been suggested for decreasing Cd toxicity in Cd contaminated soils. Recently, a lot of research have been carried out on minimizing Cd uptake through selenium (Se) and silicon (Si) applications. Both Se and Si have been reported to mitigate Cd toxicity in different crops. Vacuolar sequestration, formation of phytochelatins, and cell wall adsorption have been reported as effective mechanisms for Cd detoxification. The present review discussed past and current knowledge of literature to better understand Cd toxicity and its mitigation by adopting different feasible and practical approaches.

Address: State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China.; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.; Department of Environmental Sciences and Engineering, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan.; Department of Environmental Sciences and Engineering, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan.; Department of Soil Science, Faculty of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Punjab, Pakistan.; State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China. Electronic address: [email protected].

DOI: 10.1016/j.chemosphere.2021.129690

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MeSH Terms: Cadmium, Oryza, Phytochelatins, Selenium, Silicon, Soil Pollutants