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AuthorMokni-Tlili, Sonia
AuthorHechmi, Sarra
AuthorOuzari, Hadda Imene
AuthorMechergui, Najet
AuthorGhorbel, Manel
AuthorJedidi, Naceur
AuthorHassen, Abdennaceur
AuthorHamdi, Helmi
Available date2023-10-11T05:32:30Z
Publication Date2023-02-01
Publication NameEnvironmental Science and Pollution Research
Identifierhttp://dx.doi.org/10.1007/s11356-022-23802-2
CitationMokni-Tlili, S., Hechmi, S., Ouzari, HI. et al. Co-occurrence of antibiotic and metal resistance in long-term sewage sludge-amended soils: influence of application rates and pedo-climatic conditions. Environ Sci Pollut Res 30, 26596–26612 (2023). https://doi.org/10.1007/s11356-022-23802-2
ISSN09441344
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85141739795&origin=inward
URIhttp://hdl.handle.net/10576/48404
AbstractUrban sewage sludge (USS) is increasingly being used as an alternative organic amendment in agriculture. Because USS originates mostly from human excreta, partially metabolized pharmaceuticals have also been considered in risk assessment studies after reuse. In this regard, we investigated the cumulative effect of five annual USS applications on the spread of antibiotic-resistant bacteria (ARB) and their subsequent resistance to toxic metals in two unvegetated soils. Eventually, USS contained bacterial strains resistant to all addressed antibiotics with indices of resistance varying between 0.25 for gentamicin to 38% for ampicillin and azithromycin. Sludge-amended soils showed also the emergence of resistome for all tested antibiotics compared to non-treated controls. In this regard, the increase of sludge dose generally correlated with ARB counts, while soil texture had no influence. On the other hand, the multi-antibiotic resistance (MAR) of 52 isolates selected from USS and different soil treatments was investigated for 10 most prescribed antibiotics. Nine isolates showed significant MAR index (≥ 0.3) and co-resistance to Cd, As and Be as well. However, events including an extreme flash flood and the termination of USS applications significantly disrupted ARB communities in all soil treatments. In any case, this study highlighted the risks of ARB spread in sludge-amended soils and a greater concern with the recent exacerbation of antibiotic overuse following COVID-19 outbreak.
SponsorOpen Access funding provided by the Qatar National Library. This research study was financially supported by the Ministry of Higher Education and Scientific Research of Tunisia (Grant #11–18).
Languageen
PublisherSpringer
SubjectAgricultural soils
Antibiotic-resistant bacteria
Flash flood
Metal resistance
Organic amendment
Urban sewage sludge
TitleCo-occurrence of antibiotic and metal resistance in long-term sewage sludge-amended soils: influence of application rates and pedo-climatic conditions
TypeArticle
Pagination26596-26612
Issue Number10
Volume Number30
ESSN1614-7499
dc.accessType Full Text


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