数字农科院2.0

Distinct distribution patterns and functional potentials of rare and abundant microorganisms between plastisphere and soils

文献类型： 外文期刊

作者： Yongbin Li;Wenlong Gao;Caixia Wang;Miao Gao

作者机构：

关键词： Bacteria;Community assembly;Fungi;Greenhouse;Plastic film;Soil-borne plant pathogen

期刊名称： Science of the Total Environment

ISSN： 0048-9697

年卷期： 2023 年 873 卷

页码：

收录情况： SCIE（2023版） ; ; EI（2023版）

摘要： The increasing application of plastic film has caused the “white pollution” of farmlands in greenhouses. To date, most studies on the ecology of the plastisphere have focused on the whole microbial community, with few on the rare and abundant taxa, especially in the terrestrial ecosystems. To understand the plastisphere rare and abundant taxa of bacterial and fungal communities, we collected residues of plastic film from plastic-covered soils in the greenhouse. The plastisphere was significantly different from surrounding soils in terms of alpha- and beta-diversities of abundant and rare taxa. Such discrepancies were greater in rare taxa than in abundant taxa. Besides, the enrichment of soil-borne plant pathogenic fungi in the plastisphere implied that plastic film residues can act as vectors for pathogen transmission. In the plastisphere, the stochastic process governed the assemblies of rare taxa, while deterministic assemblies dominated that of abundant taxa. However, in surrounding soils, the stochastic process played a larger role in abundant taxa as compared to rare taxa. The plastisphere showed a network of less complexity, more competitive connections, and more modules compared to surrounding soils, and rare taxa played greater roles than abundant taxa. There existed obvious discrepancies in the microbial functions between surrounding soils and plastisphere, including carbon, sulfur, nitrogen, and phosphorus cycling, and rare taxa contribute large proportions to the above cycling processes. Altogether, the findings advance our understanding of ecological mechanisms of abundant and rare taxa in the plastisphere in terrestrial ecosystems.

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