Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strains
Trifluralin (FLL) is extensively used in rapeseed fields in the Qinghai-Tibet Plateau (QTP) region. However, the degradation kinetics of FLL in this area and its impact on environmental microbial communities are not yet known. To investigate the degradation patterns and ecological benefits of FLL, t...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844025001501 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832573167008219136 |
|---|---|
| author | Dong Zhao Lei Wang Shuo Shen Enyu Lu Junlong Feng Nima Bai Hongyu Chen Wei Li |
| author_facet | Dong Zhao Lei Wang Shuo Shen Enyu Lu Junlong Feng Nima Bai Hongyu Chen Wei Li |
| author_sort | Dong Zhao |
| collection | DOAJ |
| description | Trifluralin (FLL) is extensively used in rapeseed fields in the Qinghai-Tibet Plateau (QTP) region. However, the degradation kinetics of FLL in this area and its impact on environmental microbial communities are not yet known. To investigate the degradation patterns and ecological benefits of FLL, this study established a comprehensive method for detecting FLL residues and selected efficient degrading bacterial strains. Degradation experiments were conducted in two typical soil types of the QTP, and the dynamic changes in microbial communities were explored. The results indicated that FLL degradation in soils from two different regions of the QTP followed first-order kinetics, with half-lives of 25 and 39 days, respectively. The application of FLL at 173 g/ha significantly increased bacterial richness and diversity in the soils of both regions. Three efficient degrading strains were selected from soil samples: FL-3 (Bacillus velezensis) with a degradation rate of 80.81 %, FL-5 (Bacillus velezensis) at 51.18 %, and FL-6 (Pseudomonas atacamensis) at 49.98 %. Moreover, the optimal degradation conditions for these strains were determined, and it was verified that they had no adverse effects on the germination and seedling growth of rapeseed, wheat, and barley. The findings of this study provide important data for the environmental risk assessment of FLL and suggest potential biological resources for the rational use and environmental remediation of this herbicide. These results are significant for developing safe use and environmental management strategies for FLL in the QTP. |
| format | Article |
| id | doaj-art-ac9dcdeb34ee4666b26ac31cc71c03c7 |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-ac9dcdeb34ee4666b26ac31cc71c03c72025-02-02T05:28:08ZengElsevierHeliyon2405-84402025-01-01112e41770Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strainsDong Zhao0Lei Wang1Shuo Shen2Enyu Lu3Junlong Feng4Nima Bai5Hongyu Chen6Wei Li7Academy of Agriculture and Forestry, Qinghai University, Xining, 810016, China; Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining, 810016, ChinaAcademy of Agriculture and Forestry, Qinghai University, Xining, 810016, China; Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining, 810016, ChinaAcademy of Agriculture and Forestry, Qinghai University, Xining, 810016, China; Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining, 810016, ChinaAcademy of Agriculture and Forestry, Qinghai University, Xining, 810016, China; Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining, 810016, ChinaAcademy of Agriculture and Forestry, Qinghai University, Xining, 810016, China; Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining, 810016, ChinaHaibei Tibetan Autonomous Prefecture of Qinghai Province Agriculture and Animal Husbandry Comprehensive Service Center, ChinaAcademy of Agriculture and Forestry, Qinghai University, Xining, 810016, China; Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining, 810016, China; Corresponding author. Academy of Agriculture and Forestry, Qinghai University, Xining, 810016, China.Academy of Agriculture and Forestry, Qinghai University, Xining, 810016, China; Key Laboratory of Integrated Management of Agricultural Pest in Qinghai Province, Xining, 810016, China; Corresponding author. Institute of Plant Protection, College of Agriculture and Forestry, Qinghai University,251 Ning da Road, North District, Xining, China.Trifluralin (FLL) is extensively used in rapeseed fields in the Qinghai-Tibet Plateau (QTP) region. However, the degradation kinetics of FLL in this area and its impact on environmental microbial communities are not yet known. To investigate the degradation patterns and ecological benefits of FLL, this study established a comprehensive method for detecting FLL residues and selected efficient degrading bacterial strains. Degradation experiments were conducted in two typical soil types of the QTP, and the dynamic changes in microbial communities were explored. The results indicated that FLL degradation in soils from two different regions of the QTP followed first-order kinetics, with half-lives of 25 and 39 days, respectively. The application of FLL at 173 g/ha significantly increased bacterial richness and diversity in the soils of both regions. Three efficient degrading strains were selected from soil samples: FL-3 (Bacillus velezensis) with a degradation rate of 80.81 %, FL-5 (Bacillus velezensis) at 51.18 %, and FL-6 (Pseudomonas atacamensis) at 49.98 %. Moreover, the optimal degradation conditions for these strains were determined, and it was verified that they had no adverse effects on the germination and seedling growth of rapeseed, wheat, and barley. The findings of this study provide important data for the environmental risk assessment of FLL and suggest potential biological resources for the rational use and environmental remediation of this herbicide. These results are significant for developing safe use and environmental management strategies for FLL in the QTP.http://www.sciencedirect.com/science/article/pii/S2405844025001501TrifluralinDegradationMicrobial abundanceBiodegradation |
| spellingShingle | Dong Zhao Lei Wang Shuo Shen Enyu Lu Junlong Feng Nima Bai Hongyu Chen Wei Li Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strains Heliyon Trifluralin Degradation Microbial abundance Biodegradation |
| title | Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strains |
| title_full | Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strains |
| title_fullStr | Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strains |
| title_full_unstemmed | Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strains |
| title_short | Degradation dynamics of Trifluralin in Qinghai-Tibet Plateau and screening of its degrading strains |
| title_sort | degradation dynamics of trifluralin in qinghai tibet plateau and screening of its degrading strains |
| topic | Trifluralin Degradation Microbial abundance Biodegradation |
| url | http://www.sciencedirect.com/science/article/pii/S2405844025001501 |
| work_keys_str_mv | AT dongzhao degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains AT leiwang degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains AT shuoshen degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains AT enyulu degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains AT junlongfeng degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains AT nimabai degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains AT hongyuchen degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains AT weili degradationdynamicsoftrifluralininqinghaitibetplateauandscreeningofitsdegradingstrains |