Role of psychrotrophic fungal strains in accelerating and enhancing the maturity of pig manure composting under low-temperature conditions

Abdellah, Yousif Abdelrahman Yousif; Li, Tianzhu; Chen, Xi; Cheng, Yi; Sun, Shanshan; Wang, Yue; Jiang, Cheng; Zang, Hailian; Li, Chunyan

doi:10.1016/j.biortech.2020.124402

Cited by 82 publications

(9 citation statements)

References 49 publications

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“…Nitrification is the bio-oxidation process that oxidizes NH 4 + into NO 2 – and finally into NO 3 – . Microbes perform nitrification through the ammonia monooxygenase encoded by amo . RBC500, RS250-4, and SM250-4 addition increased the abundance of amo -containing bacteria in the soil, which is consistent with the findings in Figure d .…”

Section: Results and Discussionsupporting

confidence: 88%

“…Cellulose, chitin, and lignin are typical agricultural wastes that are relatively stable in soil (Figure a) . Cellobiose phosphorylase, cellulase, exoglucanase, and endoglucanase are the main cellulose-degrading enzymes. , Moreover, deacetylase and polyphenol oxidase are the main chitin- and lignin-degrading enzymes, respectively (Figure a). Figure c shows that the addition of RBC500 to the soil inhibited the abundance of bacteria containing cellulose and chitin degradation genes while increasing the abundance of bacteria containing lignin degradation genes.…”

Section: Results and Discussionmentioning

confidence: 99%

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Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Wang

Shao

et al. 2022

ACS Sustainable Chem. Eng.

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Value-added biochar or hydrochar converted from agricultural waste has the potential to improve soil performance. However, how biochar and hydrochar addition affect ecological responses is not clear. Here, we examined the physicochemical property of biochar and hydrochar from straw (RS) and manure (SM), identified relevant eco-friendly pretreatment methods through life cycle assessment (LCA) methodology, and investigated their influences on soil properties and C and N cycles. The results showed that biochar prepared at 500 and 700 °C and hydrochar prepared at 250 °C for 4, 6, and 8 h had better physicochemical properties. The LCA results revealed that RBC500, RS250-4, and SM250-4 had lower environmental burdens in the preparation process. Moreover, biochar and hydrochar addition could promote the soil C and N cycles to varying degrees, especially in the case of SM250-4, which could simultaneously promote the degradation of cellulose, lignin, and chitin and reduce the emission of CO2 and N2O. Overall, SM250-4 application had a beneficial effect on carbon neutralization. These novel results compensate for the deficiency of research on the phaeozem improvement effects of biochar and hydrochar.

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Section: Results and Discussionsupporting

confidence: 88%

Section: Results and Discussionmentioning

confidence: 99%

Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Wang

Shao

et al. 2022

ACS Sustainable Chem. Eng.

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“…This is similar to previous results (Chang et al, 2021), mostly, Ascomycota was detected to be the major phylum of the fungal community during composting which exerted a critical role in producing enzymes responsible for cellulose degradation (Meng et al, 2018). As well, Basidiomycota unveiled dominance in the decomposition and mineralization of lignocelluloses (Abdellah et al, 2021). Accordingly, the multi-component compost had a significant effect on cellulose degradation by increasing the abundance of fungal communities and promoting the activity of associated enzymes.…”

Section: Microbial Communitysupporting

confidence: 89%

Full-Scale of a Compost Process Using Swine Manure, Human Feces, and Rice Straw as Feedstock

Gao

Zhang

Tan

et al. 2022

Front. Bioeng. Biotechnol.

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Regarding the composting of rural waste, numerous studies either addressed the composting of a single waste component or were conducted at a laboratory/pilot scale. However, far less is known about the mixed composting effect of multi-component rural waste on a large scale. Here, we examined nutrient transformation, maturity degree of decomposition, and succession of microbial communities in large-scale (1,000 kg mixed waste) compost of multi-component wastes previously optimized by response models. The results showed that multi-component compost can achieve the requirement of maturity and exhibit a higher nutritional value in actual compost. It is worth noting that the mixed compost effectively removed pathogenic fungi, in which almost no pathogenic fungi were detected, and only two pathogenic bacteria regrown in the cooling and maturation stages. Structural equation models revealed that the maturity (germination index and the ratio of ammonium to nitrate) of the product was directly influenced by compost properties (electrical conductivity, pH, total organic carbon, moisture, temperature, and total nitrogen) compared with enzymes (cellulase, urease, and polyphenol oxidase) and microbial communities. Moreover, higher contents of total phosphorus, nitrate-nitrogen, and total potassium were conducive to improving compost maturity, whereas relatively lower values of moisture and pH were more advantageous. In addition, compost properties manifested a remarkable indirect effect on maturity by affecting the fungal community (Penicillium and Mycothermus). Collectively, this evidence implies that mixed compost of multi-component rural waste is feasible, and its efficacy can be applied in practical applications. This study provides a solution for the comprehensive treatment and utilization of rural waste.

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“…Several strategies for lignin treatment have emerged, including physical, chemical and microbial methods ( Ponnusamy et al, 2019 ). Microbial methods present the advantages of low cost and environmental friendliness ( Abdellah et al, 2021 ). Recently, a study on the contribution of bacteria to delignification and lignocellulose degradation in forest soils revealed that the main microbial group that decomposes lignin is bacteria ( Wilhelm et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Genome Functional Analysis of the Psychrotrophic Lignin-Degrading Bacterium Arthrobacter sp. C2 and the Role of DyP in Catalyzing Lignin Degradation

et al. 2022

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In the cold regions of China, lignin-rich corn straw accumulates at high levels due to low temperatures. The application of psychrotrophic lignin-degrading bacteria should be an effective means of overcoming the low-temperature limit for lignin degradation and promoting the utilization of corn straw. However, this application is limited by the lack of suitable strains for decomposition of lignin; furthermore, the metabolic mechanism of psychrotrophic lignin-degrading bacteria is unclear. Here, the whole genome of the psychrotrophic lignin-degrading bacterium Arthrobacter sp. C2, isolated in our previous work, was sequenced. Comparative genomics revealed that C2 contained unique genes related to lignin degradation and low-temperature adaptability. DyP may participate in lignin degradation and may be a cold-adapted enzyme. Moreover, DyP was proven to catalyze lignin Cα-Cβ bond cleavage. Deletion and complementation of the DyP gene verified its ability to catalyze the first-step reaction of lignin degradation. Comparative transcriptomic analysis revealed that the transcriptional expression of the DyP gene was upregulated, and the genetic compensation mechanism allowed C2ΔDyP to degrade lignin, which provided novel insights into the survival strategy of the psychrotrophic mutant strain C2ΔdyP. This study improved our understanding of the metabolic mechanism of psychrotrophic lignin-degrading bacteria and provided potential application options for energy-saving production using cold-adapted lignin-degrading enzymes.

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Role of psychrotrophic fungal strains in accelerating and enhancing the maturity of pig manure composting under low-temperature conditions

Cited by 82 publications

References 49 publications

Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Biochar and Hydrochar from Agricultural Residues for Soil Conditioning: Life Cycle Assessment and Microbially Mediated C and N Cycles

Full-Scale of a Compost Process Using Swine Manure, Human Feces, and Rice Straw as Feedstock

Genome Functional Analysis of the Psychrotrophic Lignin-Degrading Bacterium Arthrobacter sp. C2 and the Role of DyP in Catalyzing Lignin Degradation

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