Terrestrial-derived soil protein in coastal water: metal sequestration mechanism and ecological function

Wang, Qiang; Chen, Jingyan; Shan, Chen; Lu, Qian; Yuan, Bo; Tian, Yuan; Wang, Yazhi; Liu, Jingchun; Yan, Chongling; Lu, Haoliang

doi:10.1016/j.jhazmat.2019.121655

Cited by 30 publications

(8 citation statements)

References 53 publications

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“…The GRSP complexation with phenanthrene was inhibited with higher metal cations, such as Cu, Fe, and Al, because GRSP may preferentially adsorb large amounts of heavy metals. On the side, the GRSP might agglomerate and sink at high-valence metal cations, weaken the binding capacity, and advance the transfer of PAHs ( Gonzalez-Chavez et al, 2004 ; Vodnik et al, 2008 ; Wang et al, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

“…The complexation of contaminants, such as heavy metal, organic pollutants, and nanomaterials, by GRSP strongly alters their fate, i.e., mobility, bioavailability, and toxicity in the environment ( Gao et al, 2017 ; Chen et al, 2018 ; Wang et al, 2020 ). On the one hand, GRSP could interact with DOM, enhance PAH dissolution in soil, and further affect the transport of PAHs in the ecosystem ( Gao et al, 2017 ).…”

Section: Discussionmentioning

confidence: 99%

“…Meanwhile, it also could improve root PAH accumulation, increasing the weakly and strongly adsorbed fractions of PAHs in roots ( Chen et al, 2018 ). Furthermore, Wang et al (2020) indicated that GRSP could sequestrate Cu and Cd, form a stable complexation, and promote water quality. However, there are scarce studies concerning the effects of exposure to HOCs associated with GRSP of various molecular weights on both the ecosystem and humans.…”

Section: Discussionmentioning

confidence: 99%

“…The terrigenous organic matter plays a vital role in controlling the ibogeochemical processes of contaminants, such as heavy metals and organic contaminants ( Wang et al, 2020 ). Enormous reports have indicated that soil organic matter (SOM), like dissolved organic matter (DOM), can increase the solubility of toxic pollutants, enhance their transfer and accessibility in soil, exacerbate the environmental risks of pollutants, etc ( Hur et al, 2014 ; Lin et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

“…As a secretion of arbuscular mycorrhizal fungi (AMF) in soil, the enormous amount of GRSP in the soil is desirable not only to quantify AMF potential for carbon sequestration but also to improve water-stable aggregates in soil and influence soil fertility ( Wright and Upadhyaya, 1996 , 1998 ; Borie et al, 2006 ; Nichols and Wright, 2006 ), and so it may remedy soil contamination by complexing with potentially toxic elements, such as heavy metal or organic pollutants in soil ( Wang et al, 2020 ; Tian et al, 2021 ). To explore the environmental function of GRSP, it was divided into total glomalin-related soil protein (T-GRSP), easily extractable glomalin-related soil protein (EE-GRSP), immunoreactive total glomalin-related soil protein, and immunoreactive easily extractable glomalin-related soil protein ( Rillig, 2004 ).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Different Molecular Size Fractions of Glomalin-Related Soil Protein From Forest Soil and Their Interaction With Phenanthrene

et al. 2022

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As a natural organic compound secreted by arbuscular mycorrhizal fungi (AMF), glomalin-related soil protein (GRSP) is an important part in soil, affecting the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in it. Previous research have demonstrated that GRSP could enhance the availability of PAHs in the soil and favor their accumulation in plant roots. However, a scarcity of research exists on the different molecular weights of GRSP interacting with PAHs due to their complexation and heterogeneity. In this research, the extracted GRSP in soil was divided into three molecular weight (Mw) fractions of GRSP (<3,000, 3,000–10,000, and >10,000 Da), whose characteristics and binding capacity of PAHs were conducted by using UV–visible absorption, quenching fluorometry and, Fourier transform infrared spectroscopy. The results showed that the GRSP was composed of abundant compounds, it has a wide distribution of molecular weight, and the >10,000 Da Mw fraction was dominant. For three Mw fractions of GRSP, they have some difference in spectral features, for example, the >10,000 Da fraction showed higher dissolved organic carbon (DOC) contents, more phenolic hydroxyl groups, and stronger UV adsorption capacity than the low and middle Mw fractions. In addition, the interaction between GRSP and phenanthrene is related to the characteristics of the Mw fractions, especially the phenolic hydroxyl group, which has a significantly positive correlation with a binding coefficient of KA (k = 0.992, p < 0.01). Simultaneously, hydrophobic, NH-π, and H-bound also played roles in the complexation of phenanthrene with GRSP. These findings suggested that different GRSPMw fractions could influence the fate, availability, and toxicity of PAHs in soil by their interaction.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of Different Molecular Size Fractions of Glomalin-Related Soil Protein From Forest Soil and Their Interaction With Phenanthrene

et al. 2022

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Preservation of soil organic carbon in coastal wetlands promoted by glomalin–iron–organic carbon ternary system

Zhao

Jia

et al. 2022

Limnology & Oceanography

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Iron‐bound soil organic carbon (Fe‐bound SOC) and microbial residues are vital for SOC preservation, a process crucial for drawdown of anthropogenic carbon. However, the relative importance of Fe‐bound SOC in coastal wetlands, and its interaction with microbial residues remain poorly understood. Here, we used glomalin as a proxy for microbial residues, with the goal of determining microbial residues binding to Fe and Fe‐bound SOC across a 1000 km coastline of China including seven typical mangrove wetlands. As hypothesized, it was found that the glomalin fraction was strongly associated with and likely bound to Fe‐bound SOC complexes, which accounted for 21.4% ± 1.6% of mangrove SOC. Mean level of Fe‐bound glomalin was 1.2 ± 0.1 mg cm−3, accounting for 40.6% ± 1.5% of total glomalin and 35.4% ± 3.2% of Fe‐bound SOC in the top 10 cm mangrove soil layer at regional scale. Due to the growing realization that Fe may be a crucial factor of glomalin cycling, we performed multiple chemical characterization techniques to identify the association between Fe and glomalin. Our results suggested that association to Fe was a main stabilization mechanism of glomalin in soils, and glomalin served as organic ligands in the formation of Fe‐bound SOC. We also found that the bulk glomalin extracts were a glomalin–Fe–OC ternary complex, which constituted an important proportion of mangrove SOC. These findings highlight the important effect of glomalin bound to Fe as a major mechanism of SOC persistence in coastal wetlands.

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Role of arbuscular mycorrhizal symbiosis in remediation of anthropogenic soil pollution

2021

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Terrestrial-derived soil protein in coastal water: metal sequestration mechanism and ecological function

Cited by 30 publications

References 53 publications

Characterization of Different Molecular Size Fractions of Glomalin-Related Soil Protein From Forest Soil and Their Interaction With Phenanthrene

Characterization of Different Molecular Size Fractions of Glomalin-Related Soil Protein From Forest Soil and Their Interaction With Phenanthrene

Preservation of soil organic carbon in coastal wetlands promoted by glomalin–iron–organic carbon ternary system

Role of arbuscular mycorrhizal symbiosis in remediation of anthropogenic soil pollution

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