SCIENCE OF THE TOTAL ENVIRONMENT
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2023
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IF 9.8
Xiangyu Sun,Jingjing Zhang,Hongliang Li,Yong Zhu,Xingju He,Yibo Liao,Zhibing Jiang,Lu Shou,Zhiwen Wang,Tim C. Jennerjahn,Jianfang Chen
With accelerating anthropogenic activities, the overloading of land-derived nutrients and the resultant eutrophication are threatening coastal aquatic habitats worldwide. In semi-enclosed coastal bays, eutrophication is always considered a local problem that can be mitigated by nutrient reduction at a regional scale. However, as the main nutrient drains major global river discharges can have far-reaching effects over hundreds of kilometers alongshore, which are usually not precisely recognized in local coastal zone management. Here, we first quantified the contributions from both local and remote nutrient sources in Xiangshan Bay (XSB), a eutrophic semi-enclosed bay in China 200 km south of the mouth of the Changjiang River (CJR, the world's third largest river), employing a salinity-based conservative mixing model. We found that the nutrients in Xiangshan Bay were mainly supplied by intruded coastal water fed by CJR discharge, contributing 63 % of dissolved inorganic nitrogen (DIN), 65 % of dissolved silicon (DSi), and 49 % of dissolved inorganic phosphorus (DIP) during the summer of 2017, and 75 % of DIN, 75 % of DSi and 60 % of DIP during the winter of 2019. Additionally, long-term interannual trends in the nutrient concentrations of XSB were generally synchronous with those of the downstream portion of the CJR, indicating that CJR discharge seems to be a strong driver of the eutrophication observed in XSB. In contrast, the impact of local nutrient inputs, such as riverine sewage drainage, aquaculture, biogenic activities, and elemental recycling, was much lower and was regionally limited to the inner bay. Interestingly, the DIP contributions of the local and remote sources were similar, indicating the greater relevance of the internal process. Overall, to mitigate eutrophication in large river-adjacent coastal bays, the inter-regional united practices for nutrient source regulation and ecosystem restoration should be permanently applied along the entire river basin-estuary-coastal continuum.
研究领域:
海洋学
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环境科学
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DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2022
·
IF 6.056
Wei Jia,Xixuan Wu,Rong Zhang,Xin Wang,Lin Shi
The migration of perchlorate into dairy products through water or detergent is becoming increasingly serious. Spatiotemporal profiles of lipid nutrients associated with perchlorate response were investigated by spatial multi-omics of goat milk. In response to perchlorate accumulation, lipoprotein lipase activity was inhibited in glycerolipid metabolism, thereby resulting in the excessive accretion of triglycerides. Goat milk was selected as the test matrix and conducted to simulate the biological cumulation of perchlorate and evaluate effects of different dietary perchlorate levels (0.0–2.0 mg/kg) on nutritional quality of goat milk. Perchlorate altered phospholipase A 2 expression level, affected glycerophospholipid metabolism thus triggered significant changes in phosphatidylcholine (23.35–31.88 μg/mL). Excess triacylglycerol accumulation (3259–6032 μg/mL) caused by perchlorate was due to the inhibition of glycerolipid metabolism mediated by lipoprotein lipase. The study indicated that dietary perchlorate exposure resulted in the decline of nutritional quality in goat milk, which indirectly posed a serious threat to the health of consumers.
研究领域:
食品科学
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环境毒理学
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分子生物学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2025
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IF 8
Xiaoer Wu,Ying Yang,Shuang Xie,Ping Zhong,Ning Xu
Harmful algal blooms formed by the mixotrophic dinoflagellate Akashiwo sanguinea are toxic to multiple aquatic organisms, although the relationship between toxicity and grazing is unknown. In this study, the effects of irradiance and nutrient levels on the grazing rate of A. sanguinea on the cryptophyte Rhodomonas salina were investigated using an optimized stable isotope method. Under light-limited conditions (0–30 μmol photons m −2 s −1 ), A. sanguinea exhibited higher hemolytic activity and grazing rate. Under the same level of irradiance, the growth and respiration rates were higher in co-culture treatments, while the oxygen release rate was higher in monoculture treatments. The growth rate, hemolytic activity, and grazing rate of A. sanguinea increased significantly with higher nutrient levels or an unbalanced N:P ratio. The hemolytic activity and grazing rate were higher in urea treatment, while the growth rate was higher in ammonia treatment. This study suggests that toxicity is involved in the feeding process of the mixotrophic dinoflagellate A. sanguinea ; the unique feeding flexibility adapting to low irradiance, increased nutrients, unbalanced N:P ratio, and organic nitrogen urea gains an advantage in interspecific competition among phytoplankton.
研究领域:
海洋生物学
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生态毒理学
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产品关联
DOI
PubMed
高影响因子
PEST MANAGEMENT SCIENCE
·
2025
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IF 3.8
Linlin Shi,Lei Yang,Zixuan Yan,Chang Xu,Wenhui Li,Tingting Wang,Quan Gao,Min Liao,Haiqun Cao,Qingkui Fang
Background Prothioconazole (PTC), a triazole fungicide, and its metabolite prothioconazole-desthio (dPTC) present potential phytotoxic risks in crops. However, the mechanisms governing their uptake and detoxification in wheat remain unknown. This study aimed to determine how macronutrients and endogenous signaling compounds regulate PTC absorption and metabolism in wheat seedlings. Results High potassium availability markedly enhanced PTC uptake, resulting in a > 600% increase in PTC uptake over 12 h compared to the low potassium. Exogenous application of indole-3-acetic acid and brassinolide led to significant increases in PTC accumulation by 121.7% and 94.4%, respectively. Transcriptomic analysis revealed that PTC activated detoxification pathways, with prominent up-regulation of adenosine triphosphate (ATP)-binding cassette transporters and mitogen-activated protein kinase (MAPK) signaling components. Under nitrogen-deficient conditions, 1493 genes were specifically down-regulated, including those related to ribosome biogenesis, phenylalanine metabolism, and membrane transport, indicating a reduced detoxification capacity and enhanced dPTC retention. Conclusion Nitrogen availability plays a pivotal role in modulating the molecular response of wheat to PTC exposure. Nitrogen deficiency markedly down-regulated key genes involved in detoxification processes, thereby aggravating PTC-induced phytotoxicity. These results underscore the critical interplay between nutrient status and pesticide metabolism, providing mechanistic evidence to inform integrated pesticide–fertilizer management strategies aimed at minimizing chemical residues in food crops and enhancing agroecosystem sustainability. © 2025 Society of Chemical Industry.
研究领域:
植物生理学
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农药代谢
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作物营养
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分子生物学
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环境毒理学
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农业可持续性
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产品关联
DOI
PubMed
高影响因子
PLoS One
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2020
·Vol. 15
·期 4
·e0226471
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IF 2.74
Yuping Gou,Peter Quandahor,Yanxia Zhang,Jeffrey A. Coulter,Changzhong Liu
The chive maggot Bradysia cellarum and the fungus gnat B . impatiens are two primary root pests of plants, which can coexist on the same host plants and are the devastating pests on liliaceous crops and edible fungi. Their growth and development are affected by the nutrient contents of their host plants. In this study, we assessed the effects of different host plant nutrients on the nutrient contents of these two Bradysia species. The nutrients of the chive ( Allium tuberosum Rottl. ex Spreng.), board bean ( Vicia faba L.), lettuce ( Lactuca sativa L. var. ramosa Hort.), cabbage ( Brassica oleracea L.), wild cabbage ( Brassica oleracea var. capitata rubra) and pepper ( Capsicum annuum L.) roots were determined, and their effect on nutrient content of the two Bradysia species after feeding on the host plant for three continuous generations were evaluated. The results show that chive and B-bean contained higher levels of protein, free amino acid, soluble sugar and starch than others. As a result, the soluble sugar, fat and protein contents were significantly higher in both Bradysia species reared on chive and B-bean than on cabbage, lettuce, W-cabbage and pepper, suggesting nutritional preference of these insects. Based on our results, we concluded that the two Bradysia species displayed nutrient preference toward chive and B-bean, which provides a reference for understanding their host plant range and for control of the insect species via field crop rotations.
研究领域:
昆虫学
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植物科学
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农业害虫管理
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Xinyu Guo,Zhibao Liu,Hui Chen,Yuqi Zhu,Yaopeng Zhang,Fang Li,Chunyan Ma,Chensi Shen
The coexistence of antimony (Sb) contamination from textile industries and phosphorus (P) enrichment poses a significant yet understudied threat to aquatic ecosystems. This study elucidates how P availability determines Sb toxicity in cyanobacteria. Under P-deficient conditions (0 and 3.0 mg/L), Sb (50 μg/L) consistently inhibited Synechococcus sp. growth (by 29.5 % and 14.1 %, respectively) over 144 h. While, at optimal and high P levels (5.4 and 9.0 mg/L), Synechococcus sp. cells exhibited initial inhibition followed by growth promotion (by 18.8 % and 38.7 %, respectively). Mechanistically, P-deficient cells accumulated 3.7-fold more Sb, developed severe SOD/CAT imbalance (5.2-fold increase and 44.9 % decrease), and showed substantially higher ROS levels despite rapid initial Sb(III) oxidation. These divergent physiological responses were underpinned by distinct molecular adaptations. Transcriptomic analysis revealed that P-sufficient cells strategically upregulated sulfate transporters while downregulating phosphate transporters (pstS/pstC/pstA) to minimize Sb uptake, exhibited balanced redox regulation, and maintained efficient electron transport chains. In contrast, P-deficient cells upregulated emergency stress responses (flavodoxin FldA) but failed to maintain effective metal transport regulation. This study establishes nutrient status as a key determinant of Sb toxicity, demonstrating that eutrophication transforms Sb from an inhibitor to a promoter, with implications for cyanobacterial bloom management.
研究领域:
环境科学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
Molecular Plant
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2021
·
IF 13.164
Wen Hao Tian,Jia Yuan Ye,Meng Qi Cui,Jun Bo Chang,Yu Liu,Gui Xin Li,Yun Rong Wu,Ji Ming Xu,Nicholas P. Harberd,Chuan Zao Mao,Chong Wei Jin,Zhong Jie Ding,Shao Jian Zheng
Phosphorus (P) is an indispensable macronutrient required for plant growth and development. Natural phosphate (Pi) reserves are finite, and a better understanding of Pi utilization by crops is therefore vital for worldwide food security. Ammonium has long been known to enhance Pi acquisition efficiency in agriculture; however, the molecular mechanisms coordinating Pi nutrition and ammonium remains unclear. Here, we reveal that ammonium is a novel initiator that stimulates the accumulation of a key regulatory protein, STOP1, in the nuclei of Arabidopsis root cells under Pi deficiency. We show that Pi deficiency promotes ammonium uptake mediated by AMT1 transporters and causes rapid acidification of the root surface. Rhizosphere acidification-triggered STOP1 accumulation activates the excretion of organic acids, which help to solubilize Pi from insoluble iron or calcium phosphates. Ammonium uptake by AMT1 transporters is downregulated by a CIPK23 protein kinase whose expression is directly modulated by STOP1 when ammonium reaches toxic levels. Taken together, we have identified a STOP1-centered regulatory network that links external ammonium with efficient Pi acquisition from insoluble phosphate sources. These findings provide a framework for developing possible strategies to improve crop production by enhancing the utilization of non-bioavailable nutrients in soil.
研究领域:
植物学
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分子生物学
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农业科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
·
2025
·
IF 3.1
Saiqa Menhas,Minjie Chen,Hui Jin,Jiang Xu,Saiyong Zhu,Daohui Lin
Foliar application of melatonin shows promise in alleviating oxidative stress in rice, though its influence on metal-nutrient dynamics remains unclear. This study investigated the optimal dosage, timing, and concentration of melatonin for regulating elemental uptake, maintaining redox homeostasis, and managing nutrient dynamics in rice cultivated in cadmium (Cd) and selenium (Se)-enriched soils. Melatonin (50, 200 µM) was applied at vegetative stages: jointing (J) and tillering (T). At the J stage, melatonin improved biomass and photosynthetic pigments but inadequately regulated metal-nutrient dynamics due to incomplete redox homeostasis. However, applying 200 µM melatonin during the T stage significantly (p < 0.05) enhanced Se and iron (Fe) root uptake by 48% and 11%, respectively, while also improving shoot translocation. Notably, M200 reduced chromium (Cr) translocation to shoots by 82% (p < 0.05), thereby increasing root retention capacity. Additionally, 50 µM melatonin reduced root Cd uptake by 54% and increased its translocation to shoots by 53% (p < 0.05), alleviating root toxicity and enhancing the detoxification response in aerial tissues. Melatonin application reduced oxidative stress markers, increased proline levels, and enhanced antioxidative enzyme activities, with M200 at the T stage showing pronounced effects. This strategy represents a promising technological approach for managing elemental homeostasis in rice cultivation.
研究领域:
植物生理学
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环境科学
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农业科学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 41
·62272-62280
·
IF 5.19
Wang Xiaowen,Wang Yanjie,Zhao Xiaoyan,Chen Bingqiong,Kong Nannan,Shangguan Lingfei,Zhang Xiaobin,Xu Yingchun,Hu Feng
It has been well documented that polycyclic aromatic hydrocarbon (PAHs) can be taken up from the environment by the plants and translocated into the shoots. However, the mechanisms underlying this process are poorly understood. Nelumbo nucifera L. (lotus) is a highly ornamental aquatic plant known to possess strong phytoremediation capability. In the present study, the association between phenanthrene (Phe) and nutrients, including nitrogen (N) and phosphorus (P), in lotus was investigated. Over 2 years, all eight lotus cultivars tested accumulated Phe to various degrees when grown in PAH-polluted sediment (0.46 mg/kg Phe). Cluster analysis showed N. nucifera 'Zhongguo Hong Beijing (ZHB)' was the one with the highest Phe levels in the leaves and petals in 2 years. The Phe concentrations in the tissues of 'ZHB' were 3.14 mg/kg and 1.63 mg/kg on average in the first and second year, respectively. Interestingly, 'ZHB' was also the cultivar with the lowest N and P levels considering 2 years and tissues. Hydroponic studies further revealed a negative association between the concentrations of Phe and those of N and P in the aerial tissues under 0.5 and 1.0 mg/L Phe treatments in 'ZHB'. Furthermore, the significant reductions of the roots number (72.6%), longest root length (75.8%), and petiolar height (34.6%) in 'ZHB' seedlings exposed to 1.0 mg/L Phe were observed, indicating that Phe retarded the growth of lotus. These results provide a new understanding of the accumulation of Phe in plants and the association with nutrients and enrich the basis of phytoremediation to the contaminated environment.
研究领域:
环境科学
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植物学
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DOI
高影响因子
Food Bioscience
·
2019
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IF 3.22
Yang Hu,Chunhong Piao,Yue Chen,Yanan Zhou,Dan Wang,Hansong Yu,Baojun Xu
The soybean residue (okara) with high moisture content has generally been discarded, which has led to economic loss and socio-environmental problems. The effects of solid state fermentation using Kluyveromyces marxianus on the nutritional components, beany odor and processing properties of soybean residue were studied. The results showed that K. marxianus fermented soybean residue (FSR) had an increase in crude fat (24.5%), soluble dietary fibers (158%) and polysaccharides (262%), while phytic acid (61.7%) and the activity of a trypsin inhibitor (92.7%) decreased. A significant reduction in the beany odor was also observed. FSR showed higher water absorption and better emulsifying properties. Overall, the study indicated that fermentation with K. marxianus resulted in improved nutritional values and processing characteristics of the soybean residue.
研究领域:
食品科学
·
微生物学
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DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2024
·
IF 4
Jianting Ning,Jialu Chen,Wanting Liu,Xinping Chen,Xue Luo,Xiqing Yue
Amino acids serve as the fundamental building blocks of proteins which play crucial roles in various biological processes. However, there is a relative scarcity of comprehensive analysis regarding the variation of amino acids in donkey milk during different lactation periods and within different domains. Hence, we thoroughly examine the composition of both free and insoluble-proteome amino acids in donkey colostrum (DC) and donkey mature milk (DM). Our investigation includes an assessment of their nutritional significance, flavor analysis, metabolic pathways, and interactions across various lactation stages . Through nutritional assessment , we found that DC and DM exhibit excellent nutritional value . Both kinds of milk possess a delightful taste profile, with the majority of flavors concentrated in the realm of “savory umami” and “sweet-savory”. The most significant pathway of differentially expressed amino acids for both free and insoluble-proteome amino acids groups was “valine, leucine , and isoleucine biosynthesis”. These findings deepen our comprehension of the varying amino acid compositions within donkey milk across different lactation stages, paving the way for future research directions in developing functional foods utilizing donkey milk as a source.
研究领域:
营养学
·
生物化学
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产品关联
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2021
·
IF 4.556
Yitian Zhu,Yan Zhu,Xinyu Liu,Jin Qi
Citri Reticulatae ‘Chachi,’ also called “Guang Chen pi” (GCP), is a geoherb of Citri reticulatae pericarpium(CRP), mainly produced in Xinhui, Guangdong, China. It has been a food and traditional medicine for thousands of years. GCPs are popular green food, and can be divided into three picking times and different aging periods according to edible quality. Despite many pharmaceutical studies, there is little information on edible differences among GCP types. The dynamic changes in dietary value for different aging and picking times were investigated through quantifying polyphenols, soluble proteins, ascorbic acid , reducing sugars, polysaccharides , and β -carotene. The browning index (BI) and pH were also measured. Comprehensive analysis results showed that nutrient contents in brownish and reddish peels were close, and higher than in green peel. With aging time, ascorbic acid and β -carotene decreased, while dissolution of polysaccharides, polyphenols, and proteins increased, likely contributing to the aroma change. At the same time, pH of the system gradually decreased, but BI increased. Mathematical path analysis of related substrates and BI showed the greatest correlation of polyphenols with BI. The browning mechanism likely started with ascorbic acid degradation that caused reduced antioxidation, contributing to further reaction of polyphenols with other compounds to produce browning.
研究领域:
食品科学
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植物学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）