Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, China
In this work, Phragmites australis and Vallisneria natans were selected as the research objects and were cultured for 10 d under 0.10 μg L−1 sulfadiazine (SD) stress in a simulated surface flow wetland reactor. SD degradation was conducted at pH = 7 and 25 °C for 96 h. Each plant group conformed to...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-03-01
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| Series: | Journal of Water Reuse and Desalination |
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| Online Access: | http://wreuse.iwaponline.com/content/13/1/18 |
| _version_ | 1797850672856563712 |
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| author | Kun Dong WuBin Wang Min Li Xinyu Zhou Yutong Huang Guozhi Zhou Yufeng Xu Dunqiu Wang Hai-xiang Li |
| author_facet | Kun Dong WuBin Wang Min Li Xinyu Zhou Yutong Huang Guozhi Zhou Yufeng Xu Dunqiu Wang Hai-xiang Li |
| author_sort | Kun Dong |
| collection | DOAJ |
| description | In this work, Phragmites australis and Vallisneria natans were selected as the research objects and were cultured for 10 d under 0.10 μg L−1 sulfadiazine (SD) stress in a simulated surface flow wetland reactor. SD degradation was conducted at pH = 7 and 25 °C for 96 h. Each plant group conformed to the first-order kinetic model of degradation, and the degradation rate increased with time, reaching the maximum at 96 h. At 96 h, the degradation rate of P. australis communities was higher than that of V. natans. SD metabolites showed that the degradation pathways in the plant rhizosphere were mainly hydroxylation, aminolation, and S–N bond cleavage. In the analysis of rhizosphere bacterial community structure, the bacterial phyla that could degrade antibiotics accounted for a large proportion. Compared with before degradation, the dominant phylum and genus did not change after degradation (96 h), but their abundance changed to varying degrees, and new genera appeared in the P. australis group. This research provides a reference for the degradation of antibiotics in karst areas and new information on the mechanism of SA degradation in the plant rhizosphere.
HIGHLIGHTS
Under sulfonamide (SD) stress, the contents of organic acid esters in rhizosphere exudates of P. australis and V. natans increased.;
New genera were produced in rhizosphere soil of P. australis group during SD degradation.;
Antibiotics in karst wetlands may exist in the form of complexes and be adsorbed in soil or sediments.;
After SD degradation, the diversity of bacteria decreased, but the total number of bacteria increased.; |
| first_indexed | 2024-04-09T19:04:08Z |
| format | Article |
| id | doaj.art-e0b29f026702433689b4b925847cf582 |
| institution | Directory Open Access Journal |
| issn | 2220-1319 2408-9370 |
| language | English |
| last_indexed | 2024-04-09T19:04:08Z |
| publishDate | 2023-03-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water Reuse and Desalination |
| spelling | doaj.art-e0b29f026702433689b4b925847cf5822023-04-07T15:10:41ZengIWA PublishingJournal of Water Reuse and Desalination2220-13192408-93702023-03-01131183210.2166/wrd.2023.062062Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, ChinaKun Dong0WuBin Wang1Min Li2Xinyu Zhou3Yutong Huang4Guozhi Zhou5Yufeng Xu6Dunqiu Wang7Hai-xiang Li8 Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541004, China Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541004, China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China In this work, Phragmites australis and Vallisneria natans were selected as the research objects and were cultured for 10 d under 0.10 μg L−1 sulfadiazine (SD) stress in a simulated surface flow wetland reactor. SD degradation was conducted at pH = 7 and 25 °C for 96 h. Each plant group conformed to the first-order kinetic model of degradation, and the degradation rate increased with time, reaching the maximum at 96 h. At 96 h, the degradation rate of P. australis communities was higher than that of V. natans. SD metabolites showed that the degradation pathways in the plant rhizosphere were mainly hydroxylation, aminolation, and S–N bond cleavage. In the analysis of rhizosphere bacterial community structure, the bacterial phyla that could degrade antibiotics accounted for a large proportion. Compared with before degradation, the dominant phylum and genus did not change after degradation (96 h), but their abundance changed to varying degrees, and new genera appeared in the P. australis group. This research provides a reference for the degradation of antibiotics in karst areas and new information on the mechanism of SA degradation in the plant rhizosphere. HIGHLIGHTS Under sulfonamide (SD) stress, the contents of organic acid esters in rhizosphere exudates of P. australis and V. natans increased.; New genera were produced in rhizosphere soil of P. australis group during SD degradation.; Antibiotics in karst wetlands may exist in the form of complexes and be adsorbed in soil or sediments.; After SD degradation, the diversity of bacteria decreased, but the total number of bacteria increased.;http://wreuse.iwaponline.com/content/13/1/18bacterial communitydegradationkarst wetlandrhizosphere secretionsulfonamides antibiotics |
| spellingShingle | Kun Dong WuBin Wang Min Li Xinyu Zhou Yutong Huang Guozhi Zhou Yufeng Xu Dunqiu Wang Hai-xiang Li Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, China Journal of Water Reuse and Desalination bacterial community degradation karst wetland rhizosphere secretion sulfonamides antibiotics |
| title | Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, China |
| title_full | Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, China |
| title_fullStr | Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, China |
| title_full_unstemmed | Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, China |
| title_short | Degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in Huixian karst wetland, Guangxi, China |
| title_sort | degradation of sulfonamide antibiotics in the rhizosphere of two dominant plants in huixian karst wetland guangxi china |
| topic | bacterial community degradation karst wetland rhizosphere secretion sulfonamides antibiotics |
| url | http://wreuse.iwaponline.com/content/13/1/18 |
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