Stable Isotopic and Metagenomic Analyses Reveal Microbial-Mediated Effects of Microplastics on Sulfur Cycling in Coastal Sediments
文献类型：期刊论文
| 作者 | Wang, Heli1,4,5,6; Yang, Qian1,4,5,6; Li, Dan3; Wu, Junhong1,4,5,6; Yang, Sen1,4,5,6; Deng, Yirong2; Luo, Chunling4,5,6 ; Jia, Wanglu5,6; Zhong, Yin4,5,6; Peng, Ping’an4,5,6
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| 出版日期 | 2023 |
| 卷号 | 57期号:2页码:1167-1176 |
| 关键词 | SULFATE REDUCTION MANGROVE FRACTIONATION DIVERSITY IRON COMMUNITIES RIVER |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.2c06546 |
| 英文摘要 | Microplastics are readily accumulated in coastal sediments, where active sulfur (S) cycling takes place. However, the effects of microplastics on S cycling in coastal sediments and their underlying mechanisms remain poorly understood. In this study, the transformation patterns of different S species in mangrove sediments amended with different microplastics and their associated microbial communities were investigated using stable isotopic analysis and metagenomic sequencing. Biodegradable poly(lactic acid) (PLA) microplastics treatment increased sulfate (SO42-) reduction to yield more acid-volatile S and elementary S, which were subsequently transformed to chromium-reducible S (CRS). The S isotope fractionation between SO42- and CRS in PLA treatment increased by 9.1‰ from days 0 to 20, which was greater than 6.8‰ in the control. In contrast, recalcitrant petroleum-based poly(ethylene terephthalate) (PET) and polyvinyl chloride (PVC) microplastics had less impact on the sulfate reduction, resulting in 7.6 and 7.7‰ of S isotope fractionation between SO42- and CRS from days 0 to 20, respectively. The pronounced S isotope fractionation in PLA treatment was associated with increased relative abundance of Desulfovibrio-related sulfate-reducing bacteria, which contributed a large proportion of the microbial genes responsible for dissimilatory sulfate reduction. Overall, these findings provide insights into the potential impacts of microplastics exposure on the biogeochemical S cycle in coastal sediments. ? 2023 American Chemical Society. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000910927300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80314]  |
| 专题 | 有机地球化学国家重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.Guangdong Key Laboratory of Contaminated Sites Environmental Management and Remediation, Guangdong Provincial Academy of Environmental Science, Guangzhou; 510045, China 3.School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan; 523808, China 4.Guangdong Key Laboratory of Environmental Protection and Resources and Utilization, Guangzhou; 510640, China 5.CAS Center for Excellence in Deep Earth Science, Guangzhou; 510640, China 6.State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Maco Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China |
| 推荐引用方式 GB/T 7714 | Wang, Heli,Yang, Qian,Li, Dan,et al. Stable Isotopic and Metagenomic Analyses Reveal Microbial-Mediated Effects of Microplastics on Sulfur Cycling in Coastal Sediments[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023,57(2):1167-1176. |
| APA | Wang, Heli.,Yang, Qian.,Li, Dan.,Wu, Junhong.,Yang, Sen.,...&Peng, Ping’an.(2023).Stable Isotopic and Metagenomic Analyses Reveal Microbial-Mediated Effects of Microplastics on Sulfur Cycling in Coastal Sediments.ENVIRONMENTAL SCIENCE & TECHNOLOGY,57(2),1167-1176. |
| MLA | Wang, Heli,et al."Stable Isotopic and Metagenomic Analyses Reveal Microbial-Mediated Effects of Microplastics on Sulfur Cycling in Coastal Sediments".ENVIRONMENTAL SCIENCE & TECHNOLOGY 57.2(2023):1167-1176. |
入库方式： OAI收割
来源：广州地球化学研究所
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