Reprogramming of microbial community in barley root endosphere and rhizosphere soil by polystyrene plastics with different particle sizes
文献类型: 外文期刊
第一作者: Jiang, Miao
作者: Jiang, Miao;Li, Shuxin;Jian, Shulian;Li, Xiangnan;Jiang, Miao;Li, Shuxin;Jian, Shulian;Li, Xiangnan;Li, Huawei;Liu, Fulai
作者机构:
关键词: Microplastics; Nanoplastics; Endophytic microbial community; Rhizosphere soil; Microbial diversity
期刊名称:SCIENCE OF THE TOTAL ENVIRONMENT ( 影响因子:9.8; 五年影响因子:9.6 )
ISSN: 0048-9697
年卷期: 2023 年 866 卷
页码:
收录情况: SCI
摘要: Polystyrene plastics is an emerging pollutant affecting plant performance and soil functioning. However, little informa-tion is available on the effects of microplastics and nanoplastics on plant root endophytic and rhizospheric soil micro-bial communities. Here, barley plants were grown in microplastics/nanoplastics -treated soil and the diversity, composition and function of bacteria and fungi in the root and rhizosphere soil were examined. At the seedling stage, greater changes of root endophytes were found compared with rhizosphere microorganisms under the plastic treatments. Nanoplastics decreased the richness and diversity of the fungal community, while microplastics increased the diversity of the root endophytic bacterial community. The network of the bacterial community under nanoplastics showed higher vulnerability while lower complexity than that under the control. However, the bacterial community under microplastics had a relatively higher resistance than the control. For the rhizosphere microbial community, no significant effect of plastics was found on the alpha-diversity index at the seedling stage. In addition, the nanoplastics resulted in higher sensitivity in the relative abundance and function of rhizosphere soil microbes than root endophytic microbes at the mature stage. Treatments of polystyrene plastics with different particle sizes reprogramed the rhizo-sphere and root endophytic microbial communities. Different effects of microplastics and nanoplastics were found on the diversity, composition, network structure and function of bacteria and fungi, which might be dueto the varia-tion in particle sizes. These results lay a foundation for learning the effects of polystyrene plastics with different particle sizes on the microorganisms in rhizosphere soil and plant roots, which may have important implications for the adap-tation of plant-microbial holobiont in polystyrene plastics-polluted soils.
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