» Articles » PMID: 36833839

Anaerobic Storage Completely Removes Suspected Fungal Pathogens but Increases Antibiotic Resistance Gene Levels in Swine Wastewater High in Sulfonamides

Overview
Publisher MDPI
Date 2023 Feb 25
PMID 36833839
Authors
Affiliations
Soon will be listed here.
Abstract

Wastewater storage before reuse is regulated in some countries. Investigations of pathogens and antibiotic resistance genes (ARGs) during wastewater storage are necessary for lowering the risks for wastewater reuse but are still mostly lacking. This study aimed to investigate pathogens, including harmful plant pathogens, and ARGs during 180 d of swine wastewater (SWW) storage in an anaerobic storage experiment. The contents of total organic carbon and total nitrogen in SWW were found to consistently decrease with the extension of storage time. Bacterial abundance and fungal abundance significantly decreased with storage time, which may be mainly attributed to nutrient loss during storage and the long period of exposure to a high level (4653.2 μg/L) of sulfonamides in the SWW, which have an inhibitory effect. It was found that suspected bacterial pathogens (e.g., spp., spp., spp., spp., and spp.) and sulfonamide-resistant genes , , , and tended to persist and even become enriched during SWW storage. Interestingly, some suspected plant fungal species (e.g., spp., spp. and spp.) were detected in SWW. Fungi in the SWW, including threatening fungal pathogens, were completely removed after 60 d of anaerobic storage, indicating that storage could lower the risk of using SWW in crop production. The results clearly indicate that storage time is crucial for SWW properties, and long periods of anaerobic storage could lead to substantial nutrient loss and enrichment of bacterial pathogens and ARGs in SWW.

References
1.
Kiu R, Hall L . An update on the human and animal enteric pathogen Clostridium perfringens. Emerg Microbes Infect. 2018; 7(1):141. PMC: 6079034. DOI: 10.1038/s41426-018-0144-8. View

2.
Shi F, Zhao X, Cheng Q, Lin H, Zheng H, Zhou Q . High-Energy-Density Organic Amendments Enhance Soil Health. Int J Environ Res Public Health. 2022; 19(19). PMC: 9566092. DOI: 10.3390/ijerph191912212. View

3.
Daigger G . Oxygen and carbon requirements for biological nitrogen removal processes accomplishing nitrification, nitritation, and anammox. Water Environ Res. 2014; 86(3):204-9. DOI: 10.2175/106143013x13807328849459. View

4.
Xinjie W, Xin N, Qilu C, Ligen X, Yuhua Z, Qifa Z . Vetiver and co-culture for the removal of nutrients and ecological inactivation of pathogens in swine wastewater. J Adv Res. 2019; 20:71-78. PMC: 6562367. DOI: 10.1016/j.jare.2019.05.004. View

5.
Ma L, Geiser D, Proctor R, Rooney A, ODonnell K, Trail F . Fusarium pathogenomics. Annu Rev Microbiol. 2013; 67:399-416. DOI: 10.1146/annurev-micro-092412-155650. View