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Effects of microplastics on functional genes related to CH4 and N2O metabolism in bacteriophages during manure composting and its planting applications

文献类型： 外文期刊

作者： Deng, Wei-Kang 1 ; He, Jun-Liang 1 ; Chen, Jing-Yuan 1 ; Wu, Rui-Ting 1 ; Xing, Si-Cheng 2 ; Liao, Xin-Di 1 ;

作者机构： 1.South China Agr Univ, Coll Anim Sci, Guangzhou 510642, Guangdong, Peoples R China

2.South China Agr Univ, Integrat Microbiol Res Ctr, Guangzhou 510642, Peoples R China

3.South China Agr Univ, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Guangzhou 510642, Guangdong, Peoples R China

4.Minist Agr, Key Lab Chicken Genet Breeding & Reprod, Guangzhou 510642, Guangdong, Peoples R China

5.Natl Local Joint Engn Res Ctr Livestock Breeding, Guangzhou 510642, Guangdong, Peoples R China

6.State Key Lab Swine & Poultry Breeding Ind, Guangzhou 510640, Guangdong, Peoples R China

关键词： Microplastics; Greenhouse gas; Phage; Combined planting and breeding

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：13.6； 五年影响因子：12.7 ）

ISSN： 0304-3894

年卷期： 2023 年 460 卷

页码：

收录情况： SCI

摘要： Microplastics (MPs), as a new type of pollutant, widely exist in livestock and poultry breeding and agricultural soils. However, research on MPs pollution on greenhouse gas emissions in combined planting and breeding systems is lacking, especially from the perspective of phage horizontal gene transfer. Therefore, this paper ex-plores the effects of MPs on functional genes related to CH4 and N2O metabolism in bacteriophages during manure composting and its planting applications. The results of the study indicated that the addition of MPs had an impact on both the physicochemical properties and microbial community structure of manure during the composting process and on the compost-applied rhizosphere soil of lactuca (Lactuca sativa). Specifically, on day 7 of composting, mcrA/pmoA and (nirS+nirK) levels in bacteria in the MP group significantly increased. Addi-tionally, it was observed that the MP group had higher average temperatures during the high-temperature period of composting, which led to a rapid reduction in phages. However, the phage levels quickly recovered during the cooling period. Furthermore, the addition of MPs to the rhizosphere soil resulted in higher levels of nirK. These changes may affect greenhouse gas emissions.

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