Deciphering the dynamics of glomalin and heavy metals in soils contaminated with hazardous municipal solid wastes

被引：42

作者：

Gujre, Nihal ^{[1
]}

Agnihotri, Richa ^{[2
]}

Rangan, Latha ^{[3
]}

Sharma, Mahaveer P. ^{[2
]}

Mitra, Sudip ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati IITG, Ctr Rural Technol, Agroecotechnol Lab, Gauhati 781039, Assam, India

[2] Indian Inst Soybean Res, ICAR, Khandwa Rd, Indore 452001, Madhya Pradesh, India

[3] Indian Inst Technol Guwahati IITG, Dept Biosci & Bioengn, Appl Biodivers Lab, Gauhati 781039, Assam, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2021年 / 416卷

关键词：

Arbuscular mycorrhizal fungi; Glomalin related soil protein; Solid wastes; Heavy metals; Soil organic carbon; ARBUSCULAR MYCORRHIZAL FUNGI; PROTEIN; CARBON; PLANTS; POOLS; PHYTOREMEDIATION; SEQUESTRATION; INTRARADICES; STABILITY; SYMBIOSIS;

D O I：

10.1016/j.jhazmat.2021.125869

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Heavy metals (HMs) accumulation in the soils poses risks towards the environment and health. Glomalin related soil protein (GRSP) produced by arbuscular mycorrhizal fungi (AMF) has metal-sorption and soil aggregation properties and is critical in the survival of plants and AMF. For the first time, this study attempted to examine the GRSP mediated bio-stabilization of HMs in soils contaminated with municipal solid wastes (MSW). The content and interrelationship of GRSP and HMs, along with soil physicochemical properties were studied in 20 different soil samples from the dumping site. Higher amount of GRSP indicated potential bio-stabilization of HMs at some sites. GRSP exhibited weak positive correlation with essential (Zn, Cu) and toxic HMs (Cd, Ni). Cr and Mn were possibly sequestered in AMF structures and thus found to be negatively correlated with GRSP. The positive correlation observed between GRSP and soil nutrients like N, P and soil organic carbon (SOC) indicating potential of AMF-GRSP in sustaining soil health. Results revealed that AMF residing at contaminated sites produced higher amount of GRSP potentially to bio-stabilize the HMs, and reduce their bioavailability and also facilitate SOC sequestration.

引用

页数：11

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