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Microbial community composition, co-occurrence network pattern and nitrogen transformation genera response to biochar addition in cattle manure-maize straw composting.
Bello, Ayodeji; Han, Yue; Zhu, Haifeng; Deng, Liting; Yang, Wei; Meng, Qingxin; Sun, Yu; Egbeagu, Ugochi Uzoamaka; Sheng, Siyuan; Wu, Xiaotong; Jiang, Xin; Xu, Xiuhong.
Afiliação
  • Bello A; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Han Y; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Zhu H; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Deng L; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Yang W; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Meng Q; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Sun Y; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Egbeagu UU; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Sheng S; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Wu X; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Jiang X; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
  • Xu X; College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. Electronic address: xuxiuhong@neau.edu.cn.
Sci Total Environ ; 721: 137759, 2020 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-32172117
ABSTRACT
A better understanding of the microbial group influencing nitrogen (N) dynamics and cycling in composting matrix is critical in achieving good management to alleviate N loss and improve final compost quality. This study investigated the bacterial composition, structure, co-occurrence network patterns and topological roles of N transformation in cattle manure-maize straw composting using high-throughput sequencing. The two treatments used in this experiment were cattle manure and maize straw mixture (CM) and CM with 10% biochar addition (CMB). In both treatments, the bacterial community composition varied during composting and the major phyla included Actinobacteria, Firmicutes, Proteobacteria, Bacteroidetes and Chloroflexi. The phyla Actinobacteria and Proteobacteria were more abundant in CMB treatment while Firmicutes was abundant in CM piles. The metabolic functional profiles of bacteria was predicted using the "phylogenetic investigation of communities by reconstruction of unobserved states" (PICRUSt) which revealed that except for cellular processes pathway, CMB had slight higher abundance in metabolism, genetic information processing and environmental information processing than the CM. Pearson correlation revealed more significant relationship between the important bacteria communities and N transformation in CMB piles compared with CM. Furthermore, network pattern analysis revealed that the bacterial networks in biochar amended piles are more complex and harbored more positive links than that of no biochar piles. Corresponding agreement of multivariate analyses (correlation heatmap, stepwise regression, Path and network analyses) revealed that Psychrobacter, Thermopolyspora and Thermobifida in CM while Corynebacterium_1, Thermomonospora and Streptomyces in CMB were key bacterial genera affecting NH4+-N, NO3--N and total nitrogen (TN) transformation respectively during composting process. These results provide insight into nitrogen transformation and co-occurrence patterns mediating microbes and bacterial metabolism which could be useful in enhancing compost quality and mitigating N loss during composting.
Assuntos
Texto completo: Disponível Coleções: Bases de dados internacionais Contexto em Saúde: ODS3 - Saúde e Bem-Estar Tema em saúde: Meta 3.9: Reduzir o número de mortes por produtos químicos perigosos e contaminação do ar e água do solo Base de dados: MEDLINE Assunto principal: Compostagem / Microbiota Limite: Animais Idioma: Inglês Revista: Sci Total Environ Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: China

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Texto completo: Disponível Coleções: Bases de dados internacionais Contexto em Saúde: ODS3 - Saúde e Bem-Estar Tema em saúde: Meta 3.9: Reduzir o número de mortes por produtos químicos perigosos e contaminação do ar e água do solo Base de dados: MEDLINE Assunto principal: Compostagem / Microbiota Limite: Animais Idioma: Inglês Revista: Sci Total Environ Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: China
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