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Intensive management facilitates bacterial invasion on soil microbial community

文献类型： 外文期刊

作者： Qin, Hua 1 ; Cai, Ruihang 3 ; Wang, Yanan 3 ; Deng, Xuhui 4 ; Chen, Junhui 1 ; Xing, Jiajia 1 ;

作者机构： 1.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China

2.Zhejiang A&F Univ, Coll Environm & Resource Sci, Hangzhou 311300, Peoples R China

3.Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou 310021, Peoples R China

4.Nanjing Agr Univ, Jiangsu Prov Key Lab Solid Organ Waste Utilizat, Nanjing 210095, Peoples R China

关键词： Intensive management; Bacterial invasion; Animal pathogen; Legacy effects; Soil microbial community

期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.7； 五年影响因子：8.4 ）

ISSN： 0301-4797

年卷期： 2023 年 340 卷

页码：

收录情况： SCI

摘要： Intensive management has greatly altered natural forests, especially forests around the world are increasingly being converted into economic plantations. Soil microbiota are critical for community functions in all ecosystems, but the effects of microbial disturbance during economic plantation remain unclear. Here, we used Escherichia coli O157:H7, a model pathogenic species for bacterial invasion, to assess the invasion impacts on the soil microbial community under intensive management. The E. coli invasion was tracked for 135 days to explore the instant and legacy impacts on the resident community. Our results showed that bamboo economic plantations altered soil abiotic and biotic properties, especially increasing pH and community diversity. Higher pH in bamboo soils resulted in longer pathogen survivals than in natural hardwood soils, indicating that pathogen suppression during intensive management should arouse our attention. A longer invasion legacy effect on the resident community (P < 0.05) were found in bamboo soils underlines the need to quantify the soil resilience even when the invasion was unsuccessful. Deterministic processes drove community assembly in bamboo plantations, and this selection acted more strongly during by E. coli invasion than in hardwood soils. We also showed more associated co-occurrence patterns in bamboo plantations, suggesting more complex potential interactions within the microbial community. Apart from community structure, community functions are also strongly related to the resident species associated with invaders. These findings provide new perspectives to understand intensive management facilitates the bacterial invasion, and the impacts would leave potential risks on environmental and human health.

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