Microbial interactions enhanced environmental fitness and expanded ecological niches under dibutyl phthalate and cadmium co-contamination

Wang, Xuejun; Wu, Hao; Dai, Chuhan; Wang, Xiaoyu; Wang, Lvjing; Xu, Jianming; Lü, Zhenmei

doi:10.1016/j.envpol.2022.119362

Cited by 20 publications

(6 citation statements)

References 78 publications

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“…Meanwhile, phytoremediation could also reduce the selective pressure and promote the activity of soil microorganisms (Cui et al, 2021). IntI 1, as an important mobile genetic element (MGE), is considered a marker of HGT (Wang, Wu, et al, 2022; Wang, Yun, et al, 2022). It is a main type of integron and integrase exogenous gene in the microbial genome that promotes the production and migration of ARGs (Liao & Chen, 2018).…”

Section: Resultsmentioning

confidence: 99%

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Phytoremediation of heavy metal and tetracycline co‐contaminated soil by Solanum nigrum L.: Response of tetracycline‐resistant genes

Li,

Guo,

et al. 2024

Land Degrad Dev

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Co‐contamination with heavy metals (HMs) and tetracyclines (TCs) in soils has been widely reported and has resulted in serious consequences, such as the diffusion of tetracycline‐resistant genes (TRGs). Phytoremediation displays high potential for the remediation of co‐contaminated soils. Here, we chose a Cd hyperaccumulator (Solanum nigrum L.) to explore the accumulation of HMs in plants and the effect of TRG diffusion in HM‐TC‐contaminated soil by conducting a pot experiment. The results showed that the shoot biomass of S. nigrum L. decreased by 28.39%–73.00% in treatments with HM (Cd and Cu) contamination singly caused by the toxicity of a nontarget element (Cu). The Cd concentrations in S. nigrum L. shoots increased by 30 times, while the Cu concentrations increased by less than 3 times. The bioconcentration factors (BCFs) and translocation factors (TFs) of Cd ranged from 1.05 to 7.98 and 0.80 to 2.27, respectively, which decreased with increasing TC concentrations in most treatments. The TC residuals in soils increased greatly with increasing TC and HM concentrations. Their concentrations in S. nigrum L. tissues followed the order chlorotetracycline > tetracycline > oxytetracycline. Phytoremediation stimulated the growth of soil microorganisms and increased the abundance of mobile genetic elements (intI 1) and TRGs, especially efflux pump genes (tet C and tet G, which increased 2.97 and 4.13 logs after phytoremediation, respectively). Our results suggested that phytoremediation had a high potential for HM and TC removal; however, it increased the diffusion risk of TRGs, especially for efflux pump genes that functioned in both HM and TC resistance.

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Section: Resultsmentioning

confidence: 99%

“…Normally, soil contamination is combined contamination caused by the coexistence and interaction of multiple pollutants (Wang, Wu, et al, 2022; Wang, Yun, et al, 2022). Soil co‐contamination with HMs and antibiotics is commonly reported in soils because of the farmland application of livestock and poultry manure (Buta et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation of heavy metal and tetracycline co‐contaminated soil by Solanum nigrum L.: Response of tetracycline‐resistant genes

Li,

Guo,

et al. 2024

Land Degrad Dev

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“…The present study observed a greater complexity in the microbial ecological network (MEN) following the application of biofertilizer. This complexity can be attributed to the positive effects of microbial synergistic interactions, which enhance the adaptability of microbial consortia and broaden their ecological niches ( Wang et al., 2022 ). Additionally, higher stress levels may lead to a prevalence of positive associations over competitive relationships ( Abrego et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Enhancing plant growth in biofertilizer-amended soil through nitrogen-transforming microbial communities

Li,

Hu,

Tan

et al. 2023

Front. Plant Sci.

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Biofertilizers have immense potential for enhancing agricultural productivity. However, there is still a need for clarification regarding the specific mechanisms through which these biofertilizers improve soil properties and stimulate plant growth. In this research, a bacterial agent was utilized to enhance plant growth and investigate the microbial modulation mechanism of soil nutrient turnover using metagenomic technology. The results demonstrated a significant increase in soil fast-acting nitrogen (by 46.7%) and fast-acting phosphorus (by 88.6%) upon application of the bacterial agent. This finding suggests that stimulated soil microbes contribute to enhanced nutrient transformation, ultimately leading to improved plant growth. Furthermore, the application of the bacterial agent had a notable impact on the accumulation of key genes involved in nitrogen cycling. Notably, it enhanced nitrification genes (amo, hao, and nar), while denitrification genes (nir and nor) showed a slight decrease. This indicates that ammonium oxidation may be the primary pathway for increasing fast-acting nitrogen in soils. Additionally, the bacterial agent influenced the composition and functional structure of the soil microbial community. Moreover, the metagenome-assembled genomes (MAGs) obtained from the soil microbial communities exhibited complementary metabolic processes, suggesting mutual nutrient exchange. These MAGs contained widely distributed and highly abundant genes encoding plant growth promotion (PGP) traits. These findings emphasize how soil microbial communities can enhance vegetation growth by increasing nutrient availability and regulating plant hormone production. This effect can be further enhanced by introducing inoculated microbial agents. In conclusion, this study provides novel insights into the mechanisms underlying the beneficial effects of biofertilizers on soil properties and plant growth. The significant increase in nutrient availability, modulation of key genes involved in nitrogen cycling, and the presence of MAGs encoding PGP traits highlight the potential of biofertilizers to improve agricultural practices. These findings have important implications for enhancing agricultural sustainability and productivity, with positive societal and environmental impacts.

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“…Soil microorganisms inhabit the rhizosphere of crop plants, which can play a key role in mediating nutrient cycling (e.g., nitrogen fixation and phosphorus solubilization) and improving tolerance to stress (e.g., drought, pathogen infection, and hazardous contamination). Microbial remediation has recently attracted interest because many soil microbes are tolerant of heavy metals, leading to a reduction in the content of heavy metals in soils through the following main mechanisms: biosorption, bioaccumulation, complexation, and biomineralization [42][43][44][45][46]. It should be noted that the application of microbial remediation holds enormous potential to mitigate heavy metals due to its high efficiency, cost-effectiveness, eco-friendliness, etc.…”

Section: The Applicable Approaches For Mitigating Heavy Metal Accumul...mentioning

confidence: 99%

The Impacts of Elevated CO2 Levels on Environmental Risk of Heavy Metal Pollution in Agricultural Soils: Applicable Remediation Approaches for Integrated Benefits

et al. 2023

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Heavy metal pollution in agricultural fields is a serious health concern because of the high bioavailability and persistent toxicity of heavy metals. Much progress has recently been made with respect to elucidating the impacts of climate change (e.g., elevated atmospheric CO2 concentrations) on the environmental behavior of heavy metal pollutants and the associated ecological and health risks. The microbiological responses to elevated CO2 levels are primarily mediated by the C balance in agricultural activities; however, the underlying mechanisms involved in plant–soil–microbe interactions under heavy metal stress are still unclear. Thus, in this study, the challenges and perspectives with regard to controlling heavy metal pollution and optimizing crop yields while reducing greenhouse emissions in agricultural ecosystems responsive to elevated CO2 levels are discussed. Considering the integrated benefits of intensive agriculture and food security under a future changing climate, the summarized findings provided in this study may help to develop applicable remediation approaches for sustainably managing heavy metal polluted soils.

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Microbial interactions enhanced environmental fitness and expanded ecological niches under dibutyl phthalate and cadmium co-contamination

Cited by 20 publications

References 78 publications

Phytoremediation of heavy metal and tetracycline co‐contaminated soil by Solanum nigrum L.: Response of tetracycline‐resistant genes

Phytoremediation of heavy metal and tetracycline co‐contaminated soil by Solanum nigrum L.: Response of tetracycline‐resistant genes

Enhancing plant growth in biofertilizer-amended soil through nitrogen-transforming microbial communities

The Impacts of Elevated CO2 Levels on Environmental Risk of Heavy Metal Pollution in Agricultural Soils: Applicable Remediation Approaches for Integrated Benefits

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