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Zhang, Song [Author]; Li, Ting [Author]; Hu, Jinming [Author]; Li, Kexin [Author]; Liu, Dong [Author]; Li, Haixia [Author]; Wang, Fang [Author]; Chen, Danhong [Author]; Zhang, Zejin [Author]; Fan, Qiuping [Author]; CUI, Xiaoyong [Author]; Che, Rongxiao [Author]

Reforestation Substantially Changed Soil Antibiotic Resistome and Their Relationships with Metal Resistance Genes, Mobile Genetic Elements, and Pathogens

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  • Media type: E-Book
  • Title: Reforestation Substantially Changed Soil Antibiotic Resistome and Their Relationships with Metal Resistance Genes, Mobile Genetic Elements, and Pathogens
  • Contributor: Zhang, Song [VerfasserIn]; Li, Ting [VerfasserIn]; Hu, Jinming [VerfasserIn]; Li, Kexin [VerfasserIn]; Liu, Dong [VerfasserIn]; Li, Haixia [VerfasserIn]; Wang, Fang [VerfasserIn]; Chen, Danhong [VerfasserIn]; Zhang, Zejin [VerfasserIn]; Fan, Qiuping [VerfasserIn]; CUI, Xiaoyong [VerfasserIn]; Che, Rongxiao [VerfasserIn]
  • imprint: [S.l.]: SSRN, 2023
  • Extent: 1 Online-Ressource (30 p)
  • Language: English
  • DOI: 10.2139/ssrn.4388265
  • Identifier:
  • Keywords: Farmlands ; Forests ; Land use changes ; Antibiotic resistome ; metagenomics ; Soil microbiome
  • Origination:
  • Footnote:
  • Description: Revealing the effects of reforestation on the soil antibiotic resistome is essential for assessing ecosystem health, yet related studies remain scarce. Here, to determine the responses of the soil antibiotic resistome to reforestation, 30 pairs of cropland and forest soil samples were collected from southwestern China, a region with high environmental heterogeneity. All the forests had been derived from croplands for more than a decade. The diversity and abundance of soil antibiotic resistance genes (ARGs), metal resistance genes (MRGs), mobile genetic elements (MGEs), and pathogens were determined by metagenomic sequencing and real-time PCR. The results showed that reforestation significantly increased soil microbial abundance and the contents of Cu, total carbon, total nitrogen, total organic carbon, and ammonium nitrogen. Nevertheless, it decreased the contents of soil Zn, Ba, nitrate nitrogen, and available phosphorus. The main soil ARGs identified in this region were vancomycin, multidrug, and bacitracin resistance genes. Reforestation significantly increased the soil ARG abundance (by 62.58%), while it decreased the ARG richness (by 16.50%). Reforestation exerted no significant effects on the abundance of heavy metal resistance genes and pathogens, but it doubled the abundance of MGEs. Additionally, reforestation substantially decreased the co-occurrence frequencies of ARGs with MRGs and pathogens. In contrast, the correlation between ARGs and MGEs was greatly enhanced by reforestation. Similarly, the correlations between soil ARG abundance and environmental factors were also strengthened by reforestation. These findings suggest that reforestation can substantially affect soil antibiotic resistome, which provides critical information for assessing the effects of large reforestation projects such as “grain for green” on soil health
  • Access State: Open Access