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Wu J, Li L, Chen M, Liu M, Zeng M, Tu W. Metabolomic interpretation of bacterial and fungal contribution to per- and polyfluoroalkyl substances interface migration in waterlogged paddy fields. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2025; 367:125580. [PMID: 39730035 DOI: 10.1016/j.envpol.2024.125580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2024] [Revised: 12/16/2024] [Accepted: 12/22/2024] [Indexed: 12/29/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are widely distributed in paddy soils, and their multi-phase partitioning in soil fractions was proved to be strongly interact with soil microbial community composition and functions. Despite this, soil bacterial and fungal metabolic molecular effects on PFAS water-soil interface migration in waterlogged paddy fields still remain unclear. This study integrated soil untargeted metabolomics with microbial amplicon sequencing to elucidate soil metabolic modulations of 15 PFAS interface release. Inhibition of bacterial and fungal metabolic activity both significantly altered PFAS cross-media translocation (p < 0.05). Gemmatimonadota, Desulfobacterota, Acidobacteriota, Actinobacteriota, and Bacteroidota were vital bacterial taxa affecting PFAS transport, while Basidiobolomycota and Chytridiomycota were vital fungal taxa. Fungi regulated PFAS migration more (R2 = 0.379-0.526) than bacteria (R2 = 0.021-0.030) due to the higher metabolic stability of stochastic-dominated fungi than deterministic-dominated bacteria. At the water-soil interface, the amino acid-like dissolved organic matter (Tyrosine and Tryptophan) contributed most (48.5-58.6 %) to the PFAS multiphase distribution. Untargeted metabolomics further clarified that fungal amino acid-like metabolites, including Phosphoenolpyruvate and Methionine, were key triggers stimulating Tyrosine and Tryptophan biosynthesis (p < 0.001), which were vital in modulating PFAS interface translocation (p < 0.001). These results provide novel insights into soil microbial metabolites' participation in PFAS water-soil interface migration, benefiting PFAS pollution control and agricultural security risk assessment in waterlogged paddy ecosystems.
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Affiliation(s)
- Jianyi Wu
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Lingxuan Li
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Miao Chen
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Meiyu Liu
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Meijuan Zeng
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Wenqing Tu
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China.
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Wu J, Li L, Chen M, Liu M, Tu W. Modulation of irrigation-induced microbial nitrogen‑iron redox to per- and polyfluoroalkyl substances' water-soil interface release in paddy fields: Activation or immobilization? THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 956:177377. [PMID: 39505044 DOI: 10.1016/j.scitotenv.2024.177377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2024] [Revised: 10/11/2024] [Accepted: 11/02/2024] [Indexed: 11/08/2024]
Abstract
Understanding the modulation of paddy field irrigation to the migration of per- and polyfluoroalkyl substances (PFAS) at the water-soil interface is pivotal for the management of PFAS pollution in paddy soil and surrounding surface water environments. In flooded soils, soil organic matter was transformed into aromatic protein-like dissolved organic matter (DOM). Meanwhile, Na+, K+, and Mg2+ were translocated into extracellular polymeric substances (EPS) under the catalysis of cation channel enzymes (p < 0.05), provided ion bridging for the binding of DOM and PFAS, and accelerated the accumulation of C4-C9 PFAS in overlying water (41.79-99.14 %). Short-chain PFAS's accumulation in soil solution of drought soils was stimulated by microorganisms secreting soluble microbial by-product-like DOM (53.15-97.96 %). Furthermore, PFAS's distribution in flood soils was dominated by bacterial denitrification and iron-reduction, whereas iron-oxidation and ammoxidation controlled that in drought soils. The transformation of organic carbon including CO and COC caused by irrigation-induced redox modulated PFAS cross-media translocation. Iron‑nitrogen redox in flooded paddy soils immobilized the PFAS's migration into overlying water (p < 0.05). Our findings have profound implications for PFAS's pollution control, surface water environmental protection, and rice production security in paddy fields.
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Affiliation(s)
- Jianyi Wu
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang 330045, China
| | - Lingxuan Li
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang 330045, China
| | - Miao Chen
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang 330045, China
| | - Meiyu Liu
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang 330045, China
| | - Wenqing Tu
- Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang 330045, China.
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Shi YB, Hua ZL, Li XQ, Zhang SH, Liu JL. Submerge-emerge alternation promotes sediment per- and polyfluoroalkyl substance (PFAS) release and bioaccumulation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 956:177413. [PMID: 39510285 DOI: 10.1016/j.scitotenv.2024.177413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 10/28/2024] [Accepted: 11/04/2024] [Indexed: 11/15/2024]
Abstract
Understanding the sediment release and plant bioaccumulation of per- and polyfluoroalkyl substances (PFASs) under submerge-emerge alternation (SE) is crucial to predicting their transport and fate in the riparian zones. In the present study, a simulational device was firstly constructed to explore the effects of SE on the transport of PFASs in riparian sediment-plant systems and the underlying mechanisms. The submerge (CS) and emerge (CE) situations were compared. The results showed that SE significantly enhanced the transport and bioaccumulation of PFASs in sediments. Compared with the initial concentration, PFASs in sediments decreased by 81.84 %, 50.48 %, and 21.68 % in the SE, CS, and CE groups, respectively. The bioaccumulation of PFASs in plant roots in the SE group was 1.26 and 4.16 times higher than that in the CS and CE groups, respectively, and the bioaccumulation of PFASs in leaves in the SE group was 2.05 and 1.71 times higher than that in the other two groups. Dissolved organic matter (DOM) composition and molecular properties under SE were recognized as the dominant factors regulating the release of PFASs from sediments. Root morphology and low-molecular-weight organic acids (LMWOAs) in root exudates were closely associated with the bioaccumulation of PFASs in plants. Among the substitutes, hexafluoropropylene oxide trimer acid (HFPO-TA) demonstrated greater hydrophobicity, hexafluoropropylene oxide dimer acid (Gen-X) had greater mobility, and 6:2 fluorotelomer sulfonate (6:2 FTS) accumulated more in plants. This study has expanded the understanding of the geochemical cycling of PFASs in riparian sediment-plant systems under submerge-emerge alternation.
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Affiliation(s)
- Ye-Bing Shi
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Zu-Lin Hua
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake, College of Environment, Hohai University, Nanjing 210098, PR China; Yangtze Institute for Conservation and Development, Nanjing 210098, PR China.
| | - Xiao-Qing Li
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake, College of Environment, Hohai University, Nanjing 210098, PR China; Yangtze Institute for Conservation and Development, Nanjing 210098, PR China
| | - Song-He Zhang
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Jian-Long Liu
- Management Division of Qinhuai River Hydraulic Engineering of Jiangsu Province, Nanjing 210022, PR China
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Wang G, Sun J, Li L, Li J, Li P. Perfluorobutanoic acid triggers metabolic and transcriptional reprogramming in wheat seedlings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172343. [PMID: 38608890 DOI: 10.1016/j.scitotenv.2024.172343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/26/2024] [Accepted: 04/07/2024] [Indexed: 04/14/2024]
Abstract
The environmental risks of fluorinated alternatives are of great concern with the phasing out of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate. Here, multi-omics (i.e., metabolomics and transcriptomics) coupled with physiological and biochemical analyses were employed to investigate the stress responses of wheat seedings (Triticum aestivum L.) to perfluorobutanoic acid (PFBA), one of the short-chain per- and polyfluoroalkyl substances (PFAS) and PFOA alternatives, at environmentally relevant concentrations (0.1-100 ng/g). After 28 days of soil exposure, PFBA boosted the generation of OH and O2- in wheat seedlings, resulting in lipid peroxidation, protein perturbation and impaired photosynthesis. Non-enzymatic antioxidant defense systems (e.g., glutathione, phenolics, and vitamin C) and enzymatic antioxidant copper/zinc superoxide dismutase were strikingly activated (p < 0.05). PFBA-triggered oxidative stress induced metabolic and transcriptional reprogramming, including carbon and nitrogen metabolisms, lipid metabolisms, immune responses, signal transduction processes, and antioxidant defense-related pathways. Down-regulation of genes related to plant-pathogen interaction suggested suppression of the immune-response, offering a novel understanding on the production of reactive oxygen species in plants under the exposure to PFAS. The identified MAPK signaling pathway illuminated a novel signal transduction mechanism in plant cells in response to PFAS. These findings provide comprehensive understandings on the phytotoxicity of PFBA to wheat seedlings and new insights into the impacts of PFAS on plants.
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Affiliation(s)
- Guotian Wang
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; YATAI Construction Science & Technology Consulting Institute Co., Ltd., Beijing 100120, China
| | - Jing Sun
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing 100044, China
| | - Lei Li
- Institute of Watershed and Ecology, Beijing Water Science and Technology Institute, Beijing 100048, China
| | - Jiuyi Li
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing 100044, China
| | - Pengyang Li
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing 100044, China.
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