Full
Outline
Pakchoi pot experiment was carried out with polyethylene microplastics (PE-MPs) and lambda-cyhalothrin. The Illumina NovaSeq high-throughput sequencing technology was employed to sequence and analyze the soil bacterial communities on the 1st and 30th days of the experiment. The results demonstrated that PE-MPs significantly inhibited the root length, fresh weight, and plant height of Pakchoi (P<0.05), which were reduced by 39.63%, 32.9%, and 19.54%, respectively, compared to the control. In contrast, lambda-cyhalothrin promoted plant growth, and when applied in combination, it alleviated the inhibitory effects of PE-MPs. On the 1st day of the experiment, both lambda-cyhalothrin and PE-MPs significantly affected the diversity of the bacterial community (P<0.05) and inhibited the growth of some bacterial groups. As the experiment progressed, lambda-cyhalothrin mitigated the inhibitory effect of PE-MPs pollutants on bacterial groups. LEfSe analysis revealed that the indicator bacterial taxa in different treatment groups varied at different times. FAPROTAX functional prediction analysis indicated that, compared to the control, lambda-cyhalothrin may inhibit the abundance of functional groups related to hydrocarbon degradation on both day 1and day 30, while PE-MPs may significantly promote their abundance. However, this promotional effect was attenuated under combined treatment. Lambda-cyhalothrin may significantly increase the abundance of human pathogen-related functional groups, especially at the beginning of the experiment. Interaction network analysis of the top 30 genera in terms of abundance indicated that PE-MPs promoted the symbiotic and cooperative relationships among these genera in terms of abundance at the end of the experiment (day 30), while the combined pollution significantly enhanced such relationships at the beginning of the experiment (day 1). These findings provide a scientific basis for a deeper understanding of the impacts of PE-MPs and lambda-cyhalothrin pollution on the microecological environment of farmland soil.
55
12
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
