ArticleApplied and environmental microbiology2026
Coexistence process and driving factors of arbuscular mycorrhizal fungi in urban green soil under heavy metal stress.
Article in Applied and environmental microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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Authors and funding
8 authors.
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Abstract
Urban green spaces in rapidly developing cities face severe heavy metal (HM) pollution, yet how this pollution affects arbuscular mycorrhizal fungal (AMF) community assembly remains poorly understood. This study involved the collection of 60 soil samples from green spaces throughout Zhengzhou, China. Soil edaphic factors and levels of five HMs were measured, alongside the sequencing of AMF communities. Our results indicated that all HMs exceeded Henan soil background levels, with pollution levels increasing with greater distance from the urban center. Furthermore, deterministic processes governed the assembly of specialist AMF communities, while stochastic processes dominated in generalists. Iron (Fe) and zinc (Zn) served as key drivers of the AMF community structure. These findings highlight the significant role of HM pollution in shaping AMF community assembly processes in urban green spaces. By enhancing our understanding of how HM pollution affects AMF ecological dynamics, strategies can be informed for maintaining and improving ecosystem functionality in urban green areas. IMPORTANCE: This study highlights the growing threat of heavy metal pollution in urban green spaces, which poses risks to soil health and ecosystem stability. As cities rapidly expand, increased pollution in green areas can disrupt microbial communities crucial for soil function. Our research shows that heavy metal contamination is increasingly affecting arbuscular mycorrhizal fungi vital for plant growth and soil quality. This shift in fungal communities is driven by rising pollution levels, with significant impacts on urban ecosystems. Understanding how these pollution-driven changes shape microbial communities is crucial for managing urban soil health. These insights are especially timely, as urbanization accelerates worldwide, presenting new challenges for environmental protection. The findings are relevant for urban planning, offering strategies to mitigate the effects of pollution and maintain ecosystem functions in green spaces. This research contributes to the broader goal of preserving sustainable urban environments in the face of escalating environmental stress.
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