Abstract
Heavy metal contamination is a global environmental concern due to its persistence and toxicity. To explore soil microbial interaction mechanisms and their association with heavy metals on a Pb–Zn waste heap, ecological network analysis tools were used to analyze high-throughput data in microbiology. The microbial network was divided into several modules, but heavy metals were associated with specific modules. The heavy metal-tolerant module (M2) had a more negative than positive relationship with the heavy metal-mid-tolerant modules (M1 and M3). Tight coupling between fungal and bacterial operational taxonomic units (OTUs) within M2 was critical for module stability and heavy metal bioremediation. Additionally, members within M2 needed to form a positive relationship to cope with heavy metal contamination (As, Pb, Zn, Cu, and Cd). The study provides fundamental information for a deeper understanding of heavy metal bioremediation mechanisms in the Pb–Zn waste heap.
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Funding
This work was financially supported by the China Postdoctoral Science Foundation (2020M683373), Science and Technology Foundation of Guizhou Province, China ([2020]1Y192), National Natural Sciences Foundation of China (41967058), United Found of the Guizhou Province Government and the Natural Science Foundation of China (No. U1612442), High-Level Talent Training Program in Guizhou ([2016]5664).
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CS: writing original draft, formal analysis, data analysis. PW: resources, project administration, funding acquisition. GW: investigation, data curation; XK: visualization, writing-review review& editing.
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Sun, C., Wu, P., Wang, G. et al. Heavy Metals Contained Within a Pb–Zn Waste Heap Exhibit Selective Association with Microbial Modules as Revealed by Network Analysis. Bull Environ Contam Toxicol 109, 1067–1074 (2022). https://doi.org/10.1007/s00128-022-03499-2
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DOI: https://doi.org/10.1007/s00128-022-03499-2