Enhanced turnover of phenolic precursors by Gloeophyllum trabeum pretreatment promotes humic substance formation during co-composting of pig manure and wheat straw

Zhu, Ning; Zhu, Yanyun; Liang, Dong; Li, Bingqing; Jin, Hongmei; Dong, Yiwei

doi:10.1016/j.jclepro.2021.128211

Cited by 39 publications

(16 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For instance, Zhu et al suggested that fungal pretreatment enhanced the influence of phenols on bacterial community shift during composting and increased the relative abundance of laccase-producing bacteria, consequently promoting the conversion of phenolic precursors into humic substances. 69 The modes not only enhance the humification and aromaticity of LM composting products but also reduce the loss of greenhouse gases (CO 2 and NH 3 ). It is because these small organics/inorganics are converted and/or incorporated into macromolecular polymers in laccase-assisted LM composting, therefore intercepting their microbial mineralization and reducing the emissions of C and N. Among the precursors, amino acids as vital linkers can promote the exoenzyme-induced humification degree and polymerization process to generate N-containing humic products.…”

Section: Role Of Laccase-aided Composting Inmentioning

confidence: 99%

“…53 For example, laccase from Gloeophyllum trabeum is capable of increasing the content of aromatics in humic substances by decomposing lignin and then repolymerizing phenolic precursors during composting. 69 Moreover, laccase encoding gene AA1 has been demonstrated at the molecular level to drive humus formation in cattle manure composting. 43 The strategy of laccase-enabled repolymerization relies on the recombination of various radical species from micromolecular precursors.…”

Section: Role Of Laccase-aided Composting Inmentioning

confidence: 99%

“…After 14 d of composting, the maximum laccase activity was found to be 52.9 U g –1 . Another study reported that inoculating Gloeophyllum trabeum was able to impact the succession of endogenous microbial communities, resulting in the increased relative abundance of laccase-producing fungi and bacteria, thereby boosting the humification process during LM composting. , Furthermore, a Fenton-like reaction could also heighten the activity of laccase by increasing Pseudomonas and Sphingomonas abundances, promoting the formation of humic substances and ameliorating the quality of compost …”

Section: Humified Mechanism Of Extracellular Laccasementioning

confidence: 99%

See 2 more Smart Citations

Insights into the Applications of Extracellular Laccase-Aided Humification in Livestock Manure Composting

Sun

Latif

et al. 2022

Environ. Sci. Technol.

View full text Add to dashboard Cite

Traditional composting is a well-suited biotechnology for onfarm management of livestock manure (LM) but still leads to the release of toxic micropollutants and imbalance of nutrients. One in situ exoenzymeassisted composting has shown promise to ameliorate the agronomical quality of end products by improving humification and polymerization. The naturally occurring extracellular laccase from microorganisms belongs to a multicopper phenoloxidase, which is verified for its versatility to tackle micropollutants and conserve organics through the reactive radical-enabled decomposition and polymerization channels. Laccase possesses an indispensable relationship with humus formation during LM composting, but its potential applications for the harmless disposal and resource utilization of LM have until now been overlooked. Herein, we review the extracellular laccase-aided humification mechanism and its optimizing strategy to maintain enzyme activity and in situ production, highlighting the critical roles of laccase in treating micropollutants and preserving organics during LM composting. Particularly, the functional effects of the formed humification products by laccaseamended composting on plant growth are also discussed. Finally, the future perspectives and outstanding questions are summarized. This critical review provides fundamental insights into laccase-boosted humification that ameliorates the quality of end products in LM composting, which is beneficial to guide and advance the practical applications of exoenzyme in humification remediation, the carbon cycle, and agriculture protection.

show abstract

Section: Role Of Laccase-aided Composting Inmentioning

confidence: 99%

Section: Role Of Laccase-aided Composting Inmentioning

confidence: 99%

Section: Humified Mechanism Of Extracellular Laccasementioning

confidence: 99%

See 1 more Smart Citation

Insights into the Applications of Extracellular Laccase-Aided Humification in Livestock Manure Composting

Sun

Latif

et al. 2022

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Small humic precursors, such as phenols, phenolic acids, amino acids, and their derivatives, are abundant in nature and difficult to recycle, gaining worldwide interest in research ( Qi et al., 2012 ; Zhu et al., 2021 ; Zhou et al., 2022 ). Exolaccase-activated humification promotes the formation of multiple copolymeric products with phenolic contaminants and small humic precursors as parents ( Liu et al., 2021a ; Li et al., 2022a ).…”

Section: Exolaccase-initiated Artificial Humificationmentioning

confidence: 99%

Exolaccase-boosted humification for agricultural applications

Chu

Sun

et al. 2022

iScience

View full text Add to dashboard Cite

“…The composting process can eliminate phytotoxicity, weed seeds, and pathogens, reduce the quantity and volume of biomass materials, and decrease the carbon-nitrogen (C/N) ratio. The organic matter can be stabilized by composting and transforming to "humus" (Zhu et al 2021). Belal and El-Mahrouk showed that the compost from rice straw can partially or totally replace peat moss and vermiculite for ornamental plant nurseries (Belal and El-Mahrouk 2010;Vaughn et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Binderless board made from composted rice straw as substrate for rice seedlings

Sun

Yong

et al. 2022

BioRes

View full text Add to dashboard Cite

A binderless board was produced from mechanically dissociated compost straw via suction filtration. The binderless board was applied to replace the topsoil that is currently used predominantly as the substrate for rice seedlings in China. The binderless board showed the highest tensile strength when the rice straw had been composted for 20 days. The bulk density, aeration, and total porosity of the binderless board showed an increasing trend with composting time, due to the increased decomposition of rice straw. The examination of the growth parameters and root morphology of the rice seedlings showed that electrical conductivity (EC), pH, and nutrient content of the binderless board made from rice straw composted for 10 days were conducive to the growth of seedlings. Polyphenols inhibited rice seedling height and shoot weight and promoted the rice seedling stem diameter and root weight. Considering the quality loss, growth index, and the strength of the binderless board, 10 days of composting is the optimal condition. These results indicate that binderless board can replace top soil and peat when used as the substrate for rice seedling.

show abstract

Enhanced turnover of phenolic precursors by Gloeophyllum trabeum pretreatment promotes humic substance formation during co-composting of pig manure and wheat straw

Cited by 39 publications

References 33 publications

Insights into the Applications of Extracellular Laccase-Aided Humification in Livestock Manure Composting

Insights into the Applications of Extracellular Laccase-Aided Humification in Livestock Manure Composting

Exolaccase-boosted humification for agricultural applications

Binderless board made from composted rice straw as substrate for rice seedlings

Contact Info

Product

Resources

About