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Internalisation of Salmonella spp. by Typha latifolia and Cyperus papyrus in vitro and implications for pathogen removal in constructed wetlands

Alufasi Richwell, Parawira Wilson, Stefanakis Alexandros, Lebea Phiyani, Chakauya Ereck, Chingwaru Walter

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URIhttp://purl.tuc.gr/dl/dias/4C0D6CE3-B949-4996-AAB9-BCC43911935E-
Identifierhttps://doi.org/10.1080/09593330.2020.1811395-
Identifierhttps://www.tandfonline.com/doi/full/10.1080/09593330.2020.1811395-
Languageen-
Extent13 pagesen
TitleInternalisation of Salmonella spp. by Typha latifolia and Cyperus papyrus in vitro and implications for pathogen removal in constructed wetlandsen
CreatorAlufasi Richwellen
CreatorParawira Wilsonen
CreatorStefanakis Alexandrosen
CreatorΣτεφανακης Αλεξανδροςel
CreatorLebea Phiyanien
CreatorChakauya Erecken
CreatorChingwaru Walteren
PublisherTaylor and Francisen
Content SummaryFreshwater contamination by enteric pathogens is implicated in the high frequency of diarrhoeal diseases in low to middle income countries, typically due to poor wastewater management. Constructed Wetlands are a cost-effective and sustainable alternative to conventional/mechanical treatment technologies, but the pathogen removal mechanisms in Constructed Wetlands are not fully understood. This study investigated for the first time the internalisation of Salmonella spp. by Typha latifolia and Cyperus papyrus in hydroponic microcosms. Presence of Salmonella spp. within roots, rhizomes and shoots was assayed using agar-based methods over a period of 12 days. Concentration of Salmonella spp. in growth media showed 2.7 and 4.8 log unit reduction with T. latifolia and C. papyrus, respectively, and 1.8 and 6.0 log unit in unplanted units. Salmonella spp. was recovered from root and rhizome tissues of T. latifolia (up to 4.4 logCFU/g) and C. papyrus (up to 3.4 logCFU/g), and the bacteria were highly concentrated in the epidermis and cortex. However, Salmonella spp. was not detected in the stems and leaves of the two plant species. The present study demonstrates for the first time that these macrophytes internalise cells of Salmonella spp., which could be one pathogen removal mechanism employed by wetland plants.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2021-05-27-
Date of Publication2020-
SubjectInternalisationen
SubjectSalmonella sppen
SubjectTypha latifoliaen
SubjectCyperus papyrusen
SubjectPathogen removal mechanismen
Bibliographic CitationR. Alufasi, W. Parawira, A. I. Stefanakis, P. Lebea, E. Chakauya, and W. Chingwaru, “Internalisation of Salmonella spp. by Typha latifolia and Cyperus papyrus in vitro and implications for pathogen removal in constructed wetlands,” Environ. Technol., pp. 1–13, Aug. 2020. doi: 10.1080/09593330.2020.1811395en

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