The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial Ecotone
Due to the growing focus on daily hygiene practices, sodium dodecyl sulfate (SDS), a widely used surfactant, is increasingly found in domestic sewage and rainfall runoff. Upon entering the lake–terrestrial ecotone, SDS affects the composition, abundance, and functional capacity of soil bacterial com...
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MDPI AG
2024-11-01
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| author | Lingquan Zeng Qi Zhu Chunhua Li Chun Ye |
| author_facet | Lingquan Zeng Qi Zhu Chunhua Li Chun Ye |
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| description | Due to the growing focus on daily hygiene practices, sodium dodecyl sulfate (SDS), a widely used surfactant, is increasingly found in domestic sewage and rainfall runoff. Upon entering the lake–terrestrial ecotone, SDS affects the composition, abundance, and functional capacity of soil bacterial communities due to its bacteriostatic properties. To investigate the effects of long-term discharge of sewage containing low concentrations of SDS on microorganisms in the lake–terrestrial ecotone, alterations in bacterial community structure, functional genes, and biomass were examined using a simulated continuous pollutant input. The results indicated the following: (1) The degradation rate of sodium dodecyl sulfate (SDS) by soil microorganisms in the lake–terrestrial ecotone under long-term and low concentrations of SDS stress ranged from 11 to 16 mg/kg·d. (2) The effects of low concentrations and long-term SDS stress on bacterial community structure and gene function in the lake–terrestrial ecotone differed significantly from those of short-term pollution. The damage to microbial-promoted material cycling in the lake–terrestrial ecotone was more severe; however, the proliferation of pathogenic bacteria remained continuously suppressed. (3) Soil bacteria in the lake–terrestrial ecotone responded to the stress of long-term and low concentrations of SDS primarily by enhancing chemotaxis and tolerance. |
| format | Article |
| id | doaj-art-9597c30e35fd41cd8ac2df888e874b42 |
| institution | OA Journals |
| issn | 2076-2607 |
| language | English |
| publishDate | 2024-11-01 |
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| series | Microorganisms |
| spelling | doaj-art-9597c30e35fd41cd8ac2df888e874b422025-08-20T02:05:06ZengMDPI AGMicroorganisms2076-26072024-11-011211233010.3390/microorganisms12112330The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial EcotoneLingquan Zeng0Qi Zhu1Chunhua Li2Chun Ye3National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaNational Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaNational Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaNational Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaDue to the growing focus on daily hygiene practices, sodium dodecyl sulfate (SDS), a widely used surfactant, is increasingly found in domestic sewage and rainfall runoff. Upon entering the lake–terrestrial ecotone, SDS affects the composition, abundance, and functional capacity of soil bacterial communities due to its bacteriostatic properties. To investigate the effects of long-term discharge of sewage containing low concentrations of SDS on microorganisms in the lake–terrestrial ecotone, alterations in bacterial community structure, functional genes, and biomass were examined using a simulated continuous pollutant input. The results indicated the following: (1) The degradation rate of sodium dodecyl sulfate (SDS) by soil microorganisms in the lake–terrestrial ecotone under long-term and low concentrations of SDS stress ranged from 11 to 16 mg/kg·d. (2) The effects of low concentrations and long-term SDS stress on bacterial community structure and gene function in the lake–terrestrial ecotone differed significantly from those of short-term pollution. The damage to microbial-promoted material cycling in the lake–terrestrial ecotone was more severe; however, the proliferation of pathogenic bacteria remained continuously suppressed. (3) Soil bacteria in the lake–terrestrial ecotone responded to the stress of long-term and low concentrations of SDS primarily by enhancing chemotaxis and tolerance.https://www.mdpi.com/2076-2607/12/11/2330lake–terrestrial ecotonebacterial communitiessodium dodecyl sulfatelong-term stressgene function |
| spellingShingle | Lingquan Zeng Qi Zhu Chunhua Li Chun Ye The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial Ecotone Microorganisms lake–terrestrial ecotone bacterial communities sodium dodecyl sulfate long-term stress gene function |
| title | The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial Ecotone |
| title_full | The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial Ecotone |
| title_fullStr | The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial Ecotone |
| title_full_unstemmed | The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial Ecotone |
| title_short | The Effects of Low Concentrations and Long-Term Contamination by Sodium Dodecyl Sulfate on the Structure and Function of Bacterial Communities in the Lake–Terrestrial Ecotone |
| title_sort | effects of low concentrations and long term contamination by sodium dodecyl sulfate on the structure and function of bacterial communities in the lake terrestrial ecotone |
| topic | lake–terrestrial ecotone bacterial communities sodium dodecyl sulfate long-term stress gene function |
| url | https://www.mdpi.com/2076-2607/12/11/2330 |
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