Microhabitat drive microbial anabolism to promote carbon sequestration during composting

Wei, Zimin; Mohamed, Taha Ahmed; Zhao, Li; Zhu, Zechen; Zhao, Yue; Wu, Junqiu

doi:10.1016/j.biortech.2021.126577

Cited by 67 publications

(14 citation statements)

References 86 publications

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“…Enhancing soil carbon sequestration in cropland by 0.4 wt% every year is beneficial to diminishing CO 2 productivity and thus solving climate crisis ( Lan et al., 2021 ). The chemical characteristics of artificial H-LPs regulate the metabolism of microbes and plants to affect the soil carbon reservoir ( Wei et al., 2021 ; Yang et al., 2021 ). A study by Tang et al.…”

Section: Agronomic Effects Of Humic-like Polymersmentioning

confidence: 99%

“…In addition, artificial H-LPs can also enhance photosynthesis to transform more CO 2 into organic matter ( Tang et al., 2022 ). Given that artificial H-LPs are complex carbonaceous copolymers, they are more difficult to degrade by soil microbes compared with natural organic matters ( Wei et al., 2021 ). Thus, artificial H-LPs are retained in the soil as inert carbon components.…”

Section: Agronomic Effects Of Humic-like Polymersmentioning

confidence: 99%

“…Enhancing soil carbon sequestration in cropland by 0.4 wt% every year is beneficial to diminishing CO 2 productivity and thus solving climate crisis (Lan et al, 2021). The chemical characteristics of artificial H-LPs regulate the metabolism of microbes and plants to affect the soil carbon reservoir (Wei et al, 2021;Yang et al, 2021). A study by Tang et al (2021) revealed that artificial H-LPs promoted carbon sequestration in black soil by stimulating microbial activities for binding CO 2 , thereby increasing nutrient availability for crop growth.…”

Section: Organic Carbon Storagementioning

confidence: 99%

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Exolaccase-boosted humification for agricultural applications

Chu

Sun

et al. 2022

iScience

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Section: Agronomic Effects Of Humic-like Polymersmentioning

confidence: 99%

Section: Agronomic Effects Of Humic-like Polymersmentioning

confidence: 99%

Section: Organic Carbon Storagementioning

confidence: 99%

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Exolaccase-boosted humification for agricultural applications

Chu

Sun

et al. 2022

iScience

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“…This also proved that the adsorption of heavy metals by embedded materials was nonsignificant. The main reason was that heavy metals were easy to combine with organic substances to form complexes (Chen et al 2022;Wei et al 2022), resulting in almost no free heavy metals contacting with the adsorption materials.…”

Section: Adsorption Characterization Of Materialsmentioning

confidence: 99%

Biochar mitigates the biotoxicity of heavy metals in livestock manure during composting

Chen

Liú

et al. 2022

Biochar

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The addition of biochar could mitigate the bioavailability of heavy metals during livestock manure composting. However, the main action mechanism of biochar, such as how it worked, was ambiguous. Therefore, in this study, materials (biochar, alkali modified biochar, pretreated cotton ball) were added by embedding with nylon mesh bags to explore the adsorption performance of added materials and its influence on the composting process. The results showed that embedded materials promoted the formation of humic acid and reduced the distribution proportion of bioavailable fraction of heavy metals during composting (Cu: at least 15.72%; Zn: at least 33.44%). The surface of biochar extracted from composting contained attachments, however, the attachment of heavy metal was not detected and functional groups on the materials did no change significantly. This indicated that the addition of biochar did not directly adsorb heavy metals. Most notably, the microbial network changed after embedding materials, and the succession of microbial community promoted the formation of humic acid. Ultimately, structural equation models verified that embedded materials promoted the formation of humic acid through stable microbial groups, thereby accelerating the passivation of heavy metals during composting. This study provides theoretical and technical supports for mitigating the biotoxicity of heavy metals by biochar during composting. Graphical Abstract

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“…Compared with chemical and physical remediation methods, biodegradation is considered an efficient, low-energy-consuming, and pollution-free method to remove TCC from the environment ( Wei et al, 2022 ; Wang et al, 2022a ; An et al, 2023a ). However, given the recalcitrant and antimicrobial characteristics of TCC, bacteria that can effectively degrade TCC in soil are limited ( Halden and Paull, 2005 ; Tarnow et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Enhanced bioremediation of triclocarban-contaminated soil by Rhodococcus rhodochrous BX2 and Pseudomonas sp. LY-1 immobilized on biochar and microbial community response

et al. 2023

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Triclocarban (TCC), an emerging organic contaminant (EOC), has become a severe threat to soil microbial communities and ecological security. Here, the TCC-degrading strain Rhodococcus rhodochrous BX2 and DCA-degrading strain Pseudomonas sp. LY-1 (together referred to as TC1) were immobilized on biochar to remove TCC and its intermediates in TCC-contaminated soil. High-throughput sequencing was used to investigate the microbial community structure in TCC-contaminated soil. Analysis of co-occurrence networks was used to explore the mutual relationships among soil microbiome members. The results showed that the immobilized TC1 significantly increased the removal efficiency of TCC from 84.7 to 92.7% compared to CK (no TC1 cells on biochar) in 10 mg/L TCC liquid medium. The utilization of immobilized TC1 also significantly accelerated the removal of TCC from contaminated soil. Microbial community analysis revealed the crucial microorganisms and their functional enzymes participating in TCC degradation in soil. Moreover, the internal labor division patterns and connections of TCC-degrading microbes, with a focus on strains BX2 and LY-1, were unraveled by co-occurrence networks analysis. This work provides a promising strategy to facilitate the bioremediation of TCC in soil, which has potential application value for sustainable biobased economies.

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Microhabitat drive microbial anabolism to promote carbon sequestration during composting

Cited by 67 publications

References 86 publications

Exolaccase-boosted humification for agricultural applications

Exolaccase-boosted humification for agricultural applications

Biochar mitigates the biotoxicity of heavy metals in livestock manure during composting

Enhanced bioremediation of triclocarban-contaminated soil by Rhodococcus rhodochrous BX2 and Pseudomonas sp. LY-1 immobilized on biochar and microbial community response

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