and Promote Lead Tolerance of and Biomineralize Lead to Pyromorphite

Overview

Journal Front Microbiol

Specialty Microbiology

Date 2024 May 24

PMID 38784799

Authors

Kang Cheng

Yaqin Liu

Ming Tang

Haoqiang Zhang

Affiliations

Soon will be listed here.

Abstract

Lead (Pb) is a hazardous heavy metal that accumulates in many environments. Phytoremediation of Pb polluted soil is an environmentally friendly method, and a better understanding of mycorrhizal symbiosis under Pb stress can promote its efficiency and application. This study aims to evaluate the impact of two ectomycorrhizal fungi ( and ) on the performance of under Pb stress, and the biomineralization of metallic Pb . A pot experiment using substrate with 0 and 1,000 mg/kg Pb was conducted to evaluate the growth, photosynthetic pigments, oxidative damage, and Pb accumulation of with or without ectomycorrhizal fungi. co-cultivation of ectomycorrhizal fungi and Pb shots was used to evaluate Pb biomineralization. The results showed that colonization by the two ectomycorrhizal fungi promoted plant growth, increased the content of photosynthetic pigments, reduced oxidative damage, and caused massive accumulation of Pb in plant roots. The structural characteristics of the Pb secondary minerals formed in the presence of fungi demonstrated significant differences from the minerals formed in the control plates and these minerals were identified as pyromorphite (Pb(PO)Cl). Ectomycorrhizal fungi promoted the performance of under Pb stress and suggested a potential role of mycorrhizal symbiosis in Pb phytoremediation. This observation also represents the first discovery of such Pb biomineralization induced by ectomycorrhizal fungi. Ectomycorrhizal fungi induced Pb biomineralization is also relevant to the phytostabilization and new approaches in the bioremediation of polluted environments.

Citing Articles

Lead (Pb) tolerance in the ectomycorrhizal fungi Suillus brevipes and S. tomentosus.

Leary W, Johnson M, Fletcher J, Branco S Mycorrhiza. 2024; 35(1):6.

PMID: 39708163 DOI: 10.1007/s00572-024-01179-z.

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