CHEMOSPHERE
·
2021
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IF 7.086
Enguang Nie,Haiyan Wang,Yan Chen,Yuhui Lu,Kashif Akhtar,Muhammad Riaz,Sufen Zhang,Zhiyang Yu,Qingfu Ye
Triclosan is a widely used biocide against microorganisms and is ubiquitously distributed in the environment. Triclosan can be accumulated into plants from soil and hydroponic media. However, little information is currently available on the comparative fate of triclosan in plants under soil and hydroponics cultivation conditions and factors governing uptake. Therefore, this study was designed to comparatively elucidate the uptake mechanism of 14 C-triclosan in youdonger ( Brassica campestris subsp. Chinensis var. communis ) grown under different soils and hydroponics and clarify dominant uptake factors. Results showed that 77.2% of 14 C were accumulated in youdonger grown in a hydroponic system, while only 1.24%–2.33% were accumulated in the two soil-planting systems. In addition, the bioconcentration factor (BCF) of 14 C-triclosan in soil-plant systems was approximately 400-fold smaller than that in the hydroponics. In the soil-planting system, a strong linear correlation was found between concentrations of triclosan in soil pore water and youdonger plant (R 2 > 0.85, p < 0.01) at different incubation times. Therefore, triclosan in pore water might be a good indicator to estimate its accumulation in plants and is significantly affected by soil pH, clay, and organic matter contents. The estimated average dietary intakes of triclosan for youdonger grown in hydroponic and soil-planting systems were estimated to be 1.31 ng day −1 kg −1 and 0.05–0.12 ng day −1 kg −1 , respectively, much lower than the acceptable dietary intakes of triclosan (83 μg day −1 kg −1 ), indicating no significant human health risks from youdonger consumption. This study provided insights into uptake routes of triclosan into youdonger plants from both soil and hydroponic systems, bioavailability of triclosan in different soils, and further assessment of human exposure to triclosan from youdonger.
研究领域:
环境科学
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植物学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL POLLUTION
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2021
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IF 8.071
Houfu Li,Touqeer Abbas,Mei Cai,Qichun Zhang,Jingwen Wang,Yong Li,Hongjie Di,Muhammad Tahir
Cadmium (Cd) is the most concerning soil pollutant , and a threat to human health, especially in China. The in-situ immobilization of Cadmium by amendments is one of the most widely adopted methods to remedy soil contamination. The study was designed to evaluate the effect of organo-chemical amendments on soil Cd bioavailability and nitrogen cycling microbes under continuous planting of rice ( Oryza sativa ) and pak choi ( Brassica chinensis L. ). The experiment was carried out using four amendments, Lime, Zeolite, Superphosphate , and Biochar, at two different ratios; M1: at the ratio of 47:47:5:1, and M2 at the ratio of 71:23:5:1, respectively. Moreover, both M1 and M2 were enriched at four levels (T1: 0.5%; T2: 1%; T3: 2%; T4: 4%). Results showed that compared with CK (Cd enriched soils), the yield of rice under treatments of M1T1 and M2T1 increased by 8.93% and 8.36%, respectively. While the biomass (fresh weight) of pak choi under M1 and M2 amendments increased by 2.52–2.98 times and 0.76–2.89 times respectively, under enrichment treatments T1, T2, and T3. The total Cd concentrations in rice grains treated with M1T3 and M2T3 decreased by 89.25% and 93.16%, respectively, compared with CK. On the other hand, the total Cd concentrations in pak choi under M1T3 and M2T2 decreased by 92.86% and 90.23%, respectively. The results showed that soil pH was the main factor affecting Cd bioavailability in rice and pak choi. The Variance partitioning analysis (VPA) of rice and pak choi showed that soil pH was the most significant contributing factor. In the rice season, the contribution of soil pH (P) on Cd bioavailability was 10.14% (P = 0.102), and in the pak choi season, the contribution of soil pH was 8.38% (P = 0.133). Furthermore, the abundance of ammonia oxidation and denitrifying microorganisms had significantly correlation with soil pH and exchange Cd. In rice season, when the enrichment level of amendments increased from 0.5% (T1) to 2% (T3), the gene abundance of AOA, AOB, nirK , nirS and nosZ (І) tended to decrease. While in pak choi season, when the enrichment level increased at the level of 0.5% (T1), 1% (T2), and 2% (T3), the gene abundance of AOB, nirS, and nosZ (І) increased. Additionally, the gene abundance of AOA and nirK showed a reduction in the pak choi season contrasting to rice. And the mixed amendment M2 performed better at reducing Cd uptake than M1, which may have correlation with the ratio of lime and zeolite in them. Finally, we conclude that between these two amendments, when applied at a moderate level M2 type performed better than M1 in reducing Cd uptake, and also showed positive effects on both gene abundance and increase soil pH.
研究领域:
环境科学
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微生物学
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植物学
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2025
·
IF 6.2
Shuhao Li,Xin Zhong,Ji Sun,Huanwen Xu,Shengmei Zhang,Qingming Li,Chengbo Zhou
Common broad-spectrum ultraviolet (UV) filters—oxybenzone (OBZ), avobenzone (AVB), octocrylene (OCR), and octinoxate (OMC)—can accumulate in natural environment at concentrations toxic to plants, yet their mechanisms of toxicity remain unclear. In this study, pakchoi ( Brassica rapa ssp. chinensis ) was individually exposed to these UV filters, and transcriptomic analysis revealed that approximately 8,500 genes were differentially expressed, especially those related to photosynthesis, antioxidant defense, nitrogen use, and amino acid biosynthesis. All four UV filters inhibited plant growth through multiple pathways, but their toxicological profiles differed. AVB, OCR, and OMC primarily suppressed genes involved in photosynthesis, reducing light capture and carbon fixation. In contrast, OBZ exposure upregulated photosynthetic genes, likely as a compensatory mechanism. All treatments triggered oxidative stress, indicated by increased reactive oxygen species (ROS) and expression of damage biomarkers, which activated antioxidant defenses; notably, OMC markedly increased peroxidase activity, possibly reinforcing cell wall resilience. UV filter treatments also impaired nitrogen assimilation by downregulating key enzymes, leading to increased nitrate uptake, and disrupted amino acid balance, with selective increases and decreases among amino acids. These combined physiological changes resulted in pronounced growth inhibition in pakchoi. The findings advance understanding of UV filter phytotoxicity and inform strategies for mitigating their environmental impact.
研究领域:
植物学
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环境毒理学
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植物生理学
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转录组学
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生态毒理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2025
·
IF 6.2
Enguang Nie,Dan Zhou,Dichen Ying,Zheng Lin,Jingyan Huang,Haiyan Wang,Zhen Yang
Few studies have examined the environmental fate of quinotrione, a new type of 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicide in plants. In this study, the uptake, translocation, and metabolism of quinotrione in pak choi were explored using 14C-labeling method and high-resolution mass spectrometry. The results showed that 57.7% of 14C-quinotrione was accumulated by pak choi via foliar application. The 14C-quinotrione concentration in the leaves (444.0 mg kg–1) at 5 d was 20 times higher than that in the roots (22.3 mg kg–1). The parent compound was the dominant residues (44.5–57.0%), while five metabolites were identified. Among these, hydroxylated quinotrione emerged as a key intermediate, with another three metabolites formed through hydrolysis, reduction, and oxidation. Notably, 6-(2,6-dioxocyclohexane-1-carbonyl)-1-methylquinazoline-2,4(1H,3H)-dione was the most abundant metabolite (17.7–22.2%). Our study provides further insight into the uptake and metabolism of HPPD herbicides in pak choi and the assessment of the environmental risk and food safety of quinotrione.
研究领域:
植物学
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环境化学
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农业化学
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农药科学
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2022
·
IF 6.449
Bin Zhang,Jia Hao,Zheng Sun,Xiaomin Zhao,Jing Zhang,Zhiqing Ma
Sophora alopecuroides has important industrial value as the main source of matrine-type alkaloids , which have the potential to develop into global botanical pesticides . However, the unclear residue dynamics of matrine-type alkaloids severely limits its industrial development and large-scale application as botanical pesticides. Therefore, this study systematically analyzed residue behavior of matrine-type alkaloids of S. alopecuroides in crops and the environment. Firstly, the indirect competitive enzyme-linked immunosorbent assay (IC-ELISA) method for the detection of matrine was developed and verified. The IC-ELISA method showed excellent cross-reactivities to matrine analogues, and could be used directly to detect and analyze the total alkaloids from S. alopecuroides . Using the IC-ELISA method, the dissipation behaviors and terminal residues of matrine and total alkaloids in pakchoi and soil were investigated. The results showed that matrine and the total alkaloids from S. alopecuroides were both easily degradable pesticides. However, the half-lives of matrine in pakchoi and soil were 1.576 d and 1.531d, respectively, significantly lower than those of total alkaloids with values of 6.649 d and 2.767 d. The results also provide guidance for the maximum residue detection values (MRLs) and scientific application of matrine-type alkaloid pesticides. This study is of great significance to promote the industrial development and large-scale application of its matrine-type alkaloids as botanical pesticides and improve the industrial value of S. alopecuroides .
研究领域:
农业化学
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环境科学
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药理学
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2025
·
IF 12.4
Lei Xiang,Qian-Wen Wang,Wen-Jun Wu,Nian-Jue Zheng,Bai-Lin Liu,Yan-Wen Li,Quan-Ying Cai,Hai-Ming Zhao,Ce-Hui Mo,Qing X. Li
Mining activities release a substantial quantity of toxic metals and organic flotation reagents into the aquatic environment, causing severe pollution and potential health risks. However, the synergisms and mechanisms associated with these mixed pollutants are largely overlooked. The combined application of atomic force microscopy, high-resolution mass spectrometry, nuclear magnetic resonance spectroscopy, isothermal titration calorimetry, and quantum chemical calculations revealed that that cadmium (Cd) is capable of forming tridentate coordination complexes with typical organic beneficiation reagents, namely xanthates (ethyl xanthate, isopropyl xanthate, and butyl xanthates). The resulting complexes exhibited symmetrical trigonal pyramidal structures, with the complexation composed of 4 σ bonds and 1.5 π bonds. The formation of such complexes significantly enhanced the bioavailability of Cd, thereby increasing the accumulation of Cd in hydroponically grown Chinese cabbage seedlings by up to 2.8-fold. Furthermore, it significantly inhibited the xanthates degradation, thereby augmenting their environmental persistence. Therefore, the coexistence of Cd and xanthates, particularly ethyl xanthate, caused significant synergistic toxic effects on Chinese cabbage seedlings. This was characterized by exacerbation of membrane lipid peroxidation damages and suppression of photosynthesis and transpiration, achieved through the inhibition of electron transport, stomatal conductance, and transpiration rate. These findings offer novel insights into the synergisms and mechanism of flotation organic reagents and toxic metals, which are essential to ensuring aquatic environment safety and human health.
研究领域:
环境科学
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无机化学
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水生毒理学
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分析化学
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植物生理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Linna Guo,Qianqian Wang,Qiuhua Wu,Chun Wang,Baojiang Chen
High efficiency enrichment and trace analysis of triazine herbicide residues are crucial for ensuring environmental and food safety. Herein, a series of magnetic hyper-crosslinked polymers (CD-gs-MHCPs) were synthesized with different crosslinkers, which might possess different pore structure and surface area, so they might dispay variable adsorption performance. CD-gs-MHCP2 with dichloroxylene as crosslinker delivered superior adsorption ability for triazine herbicides (THs). The synergistic effect of hydrogen bonds, hydrophobic interaction, π-π stacking interaction and pore adsorption were proved to be the main adsorption mechanism. Combined CD-gs-MHCP2 based magnetic solid-phase extraction (MSPE) with high-performance liquid chromatography, the quantitative analysis of THs in river water and vegetable samples (zucchini, pakchoi) was achieved. Under the optimal conditions, the enrichment factors for three different samples ranged from 94 to 244 and low detection limit (S/N = 3) of the four THs were obtained from 0.05 to 0.15 ng mL −1 for river water and 0.31–3.10 ng g −1 for vegetable samples. The method recoveries were in the range of 86.2 %–120 % with relative standard deviations lower than 7.4 %. This work not only offers a new strategy for fabrication β-CD-based HCPs, but also provided a practical and effective method for efficient isolation and sensitive detection of trace THs residues in complex samples.
研究领域:
环境科学
·
分析化学
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材料科学
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食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）