Diversity and dynamics of the bacterial community involved in pig manure biodegradation in a microbial fermentation bed system

文献类型： 外文期刊

第一作者： Chen, Qianqian

作者： Chen, Qianqian;Guan, Xiong;Chen, Qianqian;Liu, Bo;Wang, Jieping;Che, Jianmei;Liu, Guohong;Chen, Qianqian;Guan, Xiong

作者机构：

关键词： Agricultural byproducts;Bacterial community;In situ decomposition;Microbial fermentation bed;Pig manure;Skatole

期刊名称：ANNALS OF MICROBIOLOGY （ 影响因子：2.112； 五年影响因子：2.151 ）

ISSN： 1590-4261

年卷期： 2017 年 67 卷 7 期

页码：

收录情况： SCI

摘要： Overproduction of livestock manures with unpleasant odors causes significant environmental problems. The microbial fermentation bed (MFB) system is considered an effective approach to recycling utilization of agricultural byproducts and pig manure (PM). To gain a better understanding of bacterial communities present during the degradation of PM in MFB, the PM bacterial community was evaluated at different fermentation stages using 16S rRNA high throughput sequencing technology. The heatmap plot clustered five samples into short-term fermentation stage of 0-10 days and long-term fermentation stage of 15-20 days. The most abundant OTUs at the phylum level were Firmicutes, Actinobacteria and Proteobacteria in the long-term fermentation stage of PM, whereas Firmicutes, Bacteroidetes, and Proteobacteria predominated in the short-term fermentation stage of PM. At the genus level, organic degradation strains, such as Corynebacterium, Bacillus, Virgibacillus, Pseudomonas, Actinobacteria, Lactobacillus, Pediococcus were the predominate genera at the long-term fermentation stage, but were found only rarely in the short-term fermentation stage. C/N ratios increased and the concentration of the unpleasant odor substance 3-hydroxy-5-methylisoxazole (3-MI) decreased with prolonged period of fermentation. Redundancy analysis (RDA) demonstrated that the relative abundance of Firmicutes, Actinobacteria, Acidobacteria and Proteobacteria had a close relationship with degradation of 3-MI and increasing C/N ratio. These results provide valuable additional information about bacterial community composition during PM biodegradation in animal husbandry.

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