CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Yan Kang,Huijun Xie,Bo Li,Jian Zhang,Huu Hao Ngo,Wenshan Guo,Zizhang Guo,Qiang Kong,Shuang Liang,Jie Liu,Tingting Cheng,Liwei Zhang
The role of mussels in laboratory-scale constructed wetlands (CWs) where wastewater was contaminated with five typical polycyclic aromatic hydrocarbons (PAHs) (three 3-ring PAHs and two 4-ring PAHs) was investigated in this study. The CWs performance and PAHs removal mechanisms were well studied. Results indicated that these five PAHs improved removal efficiencies of NO 3 -N but in the case of NH 4 -N accumulation occurred. Of the five added PAHs, the 4-ring PAHs were more refractory with higher concentrations in effluent than 3-ring PAHs. By monitoring the five PAHs concentration in water, mussels had excellent removal efficiency of the five PAHs (97%). According to the mass balance calculation, mussels promoted plant uptake of five PAHs, contributing 15.2% of five PAHs removal in CWs. The PAHs could also accumulate in mussels through ingested substrate. Thus, mussels presented a positive correlation with five PAHs purification at a depth of 0–10 cm in substrate, which was 34.7 μg/kg lower than the control group. Due to the purification and enhanced aerated degradation, mussels performed better in removing 3-ring PAHs in substrate, decreasing 8.3% for 3-ring PAHs compared to the control. A positive correlation between five PAHs addition and nirS , nrfA genes was observed. However, PAHs showed negative impact on nitrifying bacteria ( amoA ). The significant correlations between mussels and five PAHs made it possible to improve CWs for PAHs treatment with aquatic faunas.
研究领域:
环境科学
·
生态学
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产品关联
DOI
高影响因子
JOURNAL OF PLANT GROWTH REGULATION
·
2023
·
IF 4.8
Islam Md Monirul,Hassan Mahmood Ul,Ishfaq Muhammad,Ripa Farhana Alam,Nadeem Faisal,Ahmad Zeeshan,Xu Jiuliang,Ning Peng,Li Xuexian
Foliar fertilization is an important agricultural practice. The response of crop plants to foliar application of mineral nutrients such as nitrogen (N), phosphorus, and potassium has been well recognized. However, little is known about crop plants’ response to the foliar spray of organic sources of nutrient, in particular, under field conditions. Here, we sprayed glutamine (Gln) at V6, V8, V12, R1 (silk), and R3 (dough) stages of maize hybrid ZD958 to investigate the physiological impacts on grain yield and nutritional quality under sufficient and low-N conditions for two consecutive years. Exogenous application of Gln (1.25 mM) significantly enhanced grain yield approximately by 20.0% under sufficient N and 38.0% under low N, as a combinatorial effect of increases in kernel number and kernel weight. The higher N concentrations in the ear and delaying leaf senescence favor the kernel setting and grain filling, preconditioning higher grain yield at harvest. Further, Gln spray resulted in higher nutritional quality kernels as indicated by higher concentrations of crude proteins, minerals, oil, unsaturated fatty acids (i.e., oleic, and linoleic acids), total carotenoids (i.e., β-carotene, lutein, zeaxanthin, antheraxanthin, and violaxanthin), and α-tocopherol, partially attributing to larger nutrient-rich embryos. Taken together, our findings revealed how Gln promotes maize production and an additional potential to improve grain yield and nutritional quality traits of maize and other closely related cereal crops.
研究领域:
植物生理学
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农业科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Yazhen Shen,Jianmin Zhou,Changwen Du,Zijun Zhou
Controlled-release fertilizers (CRFs) with long release longevity have been actively sought to match the nutrient demands of crops over the entire growing period. Waterborne polymer is an environmental friendliness coating for CRFs because it neither uses organic solvent nor influences soil property. However, its low hydrophobicity leads to a short controlled-release longevity of CRFs coated with waterborne polymer. To overcome this drawback, a hydrophobic coating was fabricated using silica-modified fluorinated lauryl-methacrylate-containing polyacrylate (SFLPA). After hydrophobic modification, both a slower water influx rate and a larger modulus induced a reduced swelling rate and an extended controlled-release longevity consequently from 42 days to 108 days. Furthermore, a pot trial demonstrated that a single application of SFLPA-coated CRFs significantly boosted grain yield (by 13.36%), nitrogen uptake (by 17.44%) and nitrogen use efficiency (by 24.29%) compared to a three-split application of urea in rice production. The study demonstrated substantial potential of silica/fluorinated waterborne polymer for improving the effectiveness of CRFs in rice production.
研究领域:
农业科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Kejin Zhou,Sheng Ye,Qi Yu,Jingji Chen,Pang Yong,Xiaoyan Ma,Qingsong Li,Andrea M. Dietrich
Dissolved nitrogenous organic matter in water can contain precursors of disinfection by-products (DBPs), especially nitrogenous DBPs (N-DBPs). Amino acids are ubiquitous as dissolved nitrogenous organic matter in source water and can pass through drinking water treatment processes to react with disinfectants in finished water and in the distribution system. Phenylalanine (Phe) was selected as a model amino acid precursor to investigate its derived DBPs and their variations during a chlorination regime that simulated water distribution with residue chlorine. The 7-day DBPs formation potential (DBPsFP) test with chlorine revealed chlorination by-products of phenylalanine including trihalomethanes (THMs), haloacetic acids (HAAs), haloacetonitriles (HANs), and halonitromethanes (HNMs), but not trichloronitromethane (TCNM) which was a significant N-DBP detected during the first 48 h of chlorine contact. The formation of most carbonaceous DBPs (C-DBPs) increased with chlorination time; however N-DBPs and non-chlorinated byproducts of phenylacetonitrile and phenylacetaldehyde reached their highest concentration after 2 h of reaction, and then gradually decreased until below detection after 7 days. The chlorination influencing factors indicated that light enhanced the peak yield of DBPs; the pH value showed different influences associated with corresponding DBPs; and the presence of bromide ions (Br − ) generated a variety of bromine-containing DBPs. The DBPsFP test with chloramine reduced C-DBPs generation to about 1/3 of the level observed for chlorine disinfection and caused an increase in dichloroacetonitrile. Surveillance of DBPs during drinking water distribution to consumers should consider the varying contact times with disinfectants to accurately profile the types and concentrations of C-DBPs and N-DBPs present in drinking water.
研究领域:
环境科学
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公共卫生
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DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 19
·11144
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IF 6.208
Qiuju Chen,Min Lian,Jian Guo,Binbin Zhang,Sankui Yang,Kexin Huang,Futian Peng,Yuansong Xiao
Nitrogen is an important nutrient element that limits plant growth and yield formation, but excessive nitrogen has negative effects on plants and the environment. It is important to reveal the molecular mechanism of high NUE (nitrogen use efficiency) for breeding peach rootstock and variety with high NUE. In this study, two peach rootstocks, Shannong–1 (S) and Maotao (M), with different NUE were used as materials and treated with 0.1 mM KNO3for transcriptome sequencing together with the control group. From the results of comparison between groups, we found that the two rootstocks had different responses to KNO3, and 2151 (KCL_S vs. KCL_M), 327 (KNO3_S vs. KCL_S), 2200 (KNO3_S vs. KNO3_M) and 146 (KNO3_M vs. KCL_M) differentially expressed genes (DEGs) were identified, respectively, which included multiple transcription factor families. These DEGs were enriched in many biological processes and signal transduction pathways, including nitrogen metabolism and plant hormone signal transduction. The function ofPpNRT2.1, which showed up-regulated expression under KNO3treatment, was verified by heterologous expression in Arabidopsis. The plant height, SPAD (soil and plant analyzer development) of leaf and primary root length of the transgenic plants were increased compared with those of WT, indicating the roles ofPpNRT2.1in nitrogen metabolism. The study uncovered for the first time the different molecular regulatory pathways involved in nitrogen metabolism between two peach rootstocks and provided gene reserve for studying the molecular mechanism of nitrogen metabolism and theoretical basis for screening peach rootstock or variety with high NUE.Keywords:peach;nitrogen use efficiency;comparative transcriptomics;PpNRT2.1gene;expression pattern;nitrate ion
研究领域:
植物科学
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分子生物学
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基因组学
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Liu Yunlong,Zhang Siyu,Qian Haoyu,Shen Chengbo,Hu Shuijin,Zhang Weijian,Wang Yong,Huang Shan,Wang Songhan,Liu Zhenghui,Li Ganghua,Fu Xiangdong,Ding Yanfeng,Li Shan,van Groenigen Kees Jan,Jiang Yu
Rising atmospheric CO 2 generally increases yield of indica rice, one of the two main Asian cultivated rice subspecies, more strongly than japonica rice, the other main subspecies. The molecular mechanisms driving this difference remain unclear, limiting the potential of future rice yield increases through breeding efforts. Here, we show that between-species variation in the DNR1 ( DULL NITROGEN RESPONSE1 ) allele, a regulator of nitrate-use efficiency in rice plants, explains the divergent response to elevated atmospheric CO 2 (eCO 2 ) conditions. eCO 2 increased rice yield by 22.8–32.3% in plants carrying or mimicking the indica DNR1 allele, but only by 3.6–11.1% in plants carrying the japonica DNR1 allele. Rice plants carrying or mimicking the indica DNR1 allele exhibit decreased eCO 2 -responsive transcription and protein abundance of DNR1, which activates genes involved in nitrate transport and assimilation, driving the increase in plant growth. Our findings identify the indica DNR1 gene as a key breeding resource for sustainably enhancing nitrate uptake and rice yields in japonica varieties, potentially contributing to global food security as atmospheric CO 2 levels continue to increase.
研究领域:
植物学
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遗传学
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环境科学
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产品关联
DOI
PubMed
高影响因子
PEST MANAGEMENT SCIENCE
·
2025
·
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
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Mengqiao Wu,Yang Cheng,Chang Dong,Xu Zhao,Zhenyu Wang,Hai Xiang,Yanjiang Cai,Yongfu Li,Hailu Fu,Bing Yu
Conventional slow-release urea fertilizers often rely on polymeric coatings, which can be costly, non-biodegradable, and environmentally problematic. To address these limitations, we developed a slow-release urea fertilizer using a combination of biodegradable polymeric (specifically polyvinyl alcohol/starch film) and biochar-based organic coatings, designated as U-PVA/ST/BOF. The slow-release performance of this fertilizer was evaluated through column leaching tests, where U-PVA/ST/BOF exhibited the most effective slow-release characteristics, with the lowest cumulative nitrogen release rate (18.3 %) over 28 days, while U/BOF (lacking the polymeric coating) released 36.4 %, while U-PVA/ST (without the biochar-based organic coating) released 42.7 %. Mechanistic investigations revealed that biochar-based organic coating in U-PVA/ST/BOF acts as a barrier, slowing water penetration and preventing premature swelling of the PVA/ST membrane. As water gradually diffuses through the biochar-based organic layer, the PVA/ST matrix absorbs moisture and swells, thereby releasing nitrogen in a sustained manner. Field trials showed that U-PVA/ST/BOF significantly improved wheat growth, grain-setting rate, and yield, resulting in a 40 %-44 % increase in yield compared to other fertilization treatments. Economic analysis indicated that U-PVA/ST/BOF provides a cost-effective solution for reducing nitrogen inputs, potentially lowering global nitrogen use by up to 29.75 million tons, offering both ecological benefits and economic viability for global agricultural systems.
研究领域:
农业化学
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高分子科学
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土壤科学
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环境科学
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植物营养
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Weidong Xiao,Ran Sun,Lang Ran,Zherui Zhang,Xue Bai,Chen Lv,Maorui Zhang,Sihai Hu,Yaoguo Wu
Heterotrophic nitrification and aerobic denitrification (HNAD) process has received significant attention due to its ability to remove both nitrogen and refractory organics. However, the characteristics of nitrogen transformation and the response of microbial communities during HNAD process by aromatic pollutants remain unclear. Herein, we established the aerobic microcosms under the stress of aromatic pollutants by introducing aniline, trinitrotoluene and phenanthrene. Regular monitoring results showed that aromatic pollutants slightly inhibited the conversion of NH 4 + -N and NO 3 - -N within 36 h, and increased the transformation of inorganic to organic nitrogen during nitrogen removal. The final removal efficiencies for total nitrogen (TN) and chemical oxygen demand (COD) were not significantly affected and were as high as over 90%. Moreover, the introduction of aromatic pollutants reduced microbial diversity, causing microbes capable of removing nitrogen and aromatic compounds to gradually evolve into dominant genera, among which Aromatoleum , Acinetobacter , and Pseudomonas played a vital role. The co-occurrence network indicated that the stress of aromatic compounds increased the connectivity between microbes, and the relationships among microbes gradually shifted towards coexistence. Meanwhile, aromatic contaminants promoted biofilm formation and enhanced the environmental tolerance of microbial communities. Furthermore, the abundance of key genes IDH3 , sucD , sdhA/B , fumC , and mdh related to the carbon metabolism was inhibited in the microcosms containing aromatic pollutants, while the expression of key genes napA , nirS , and norB related to nitrogen metabolism was promoted. Our study provides guidance and deeper understanding for biological nitrogen removal in water bodies contaminated with aromatic compounds.
研究领域:
环境微生物学
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生物修复
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水处理
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微生物生态学
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氮循环
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分子生态学
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废水处理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Jia Shi,Zi Wang,Yumei Peng,Ziyun Zhang,Zhongmin Fan,Jie Wang,Xiang Wang
The impact of conventional and biodegradable microplastics on soil nutrients (carbon and nitrogen) has been widely examined, and the alteration of nutrient conditions further influences microbial biosynthesis processes. Nonetheless, the influence of microplastic-induced nutrient imbalances on soil microorganisms (from metabolism to community interactions) is still not well understood. We hypothesized that conventional and biodegradable microplastic could alter soil nutrients and microbial processes. To fill this knowledge gap, we conducted soil microcosms with polyethylene (PE, new and aged) and polylactic acid (PLA, new and aged) microplastics to evaluate their effects on the soil enzymatic stoichiometry , co-occurrence interactions, and success patterns of soil bacterial communities. New and aged PLA induced soil N immobilization, which decreased soil mineral N by 91–141 %. The biodegradation of PLA led to a higher bioavailable C and wider bioavailable C:N ratio, which further filtered out specific microbial species. Both new and aged PLA had a higher abundance of copiotrophic members ( Proteobacteria , 35–51 % in PLA, 26–34 % in CK/PE treatments) and rrn copy number. The addition of PLA resulted in a lower alpha diversity and reduced network complexity. Conversely, because of the chemically stable hydrocarbon structure of PE polymers, the new and aged PE microplastics had a minor effect on soil mineral N, bacterial community composition, and network complexity, but led to microbial C limitation. Collectively, all microplastics increased soil C-, N-, and P -acquiring enzyme activities and reduced the number of keystone species and the robustness of the co-occurrence network. The PLA treatment enhanced nitrogen fixation and ureolysis, whereas the PE treatment increased the degradation of recalcitrant carbon. Overall, the alteration of soil nutrient conditions by microplastics affected the microbial metabolism and community interactions, although the effects of PE and PLA microplastics were distinct.
研究领域:
环境科学
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微生物学
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土壤学
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生态学
✓ 已验证
DOI
PubMed
高影响因子
NATURE GENETICS
·
2025
·
IF 29
Liu Qian,Liu Hui,Sun Lili,Wang Dekai,Sun Xueyuan,Wu Kun,Ye Yafeng,Wang Yun,Wang Shuoxun,Zhong Nan,Wu Xiaokang,Li Yu,Deng Min,Wang Meiyue,Wu Chenchen,Liu Xueying,Zhang Yijing,Xiao Jun,Wu Yuejin,Fu Xiangdong
Continuous and excessive use of inorganic fertilizers underlies current global crop production; therefore, reducing fertilizer use while increasing crop productivity is critical for ensuring agricultural sustainability and food security. Here we show that the natural variant of RCN2 , a rice TERMINAL FLOWER 1/CENTRORADIALIS homolog, enhances photosynthesis, nitrogen assimilation and grain yield by restricting chromatin loop extrusion. RCN2 competitively inhibits the interaction between growth-repressing DELLA proteins and SQUAMOSA PROMOTER BINDING PROTEIN-LIKE transcription factors, breaking the green revolution trade-off between plant growth and metabolism of carbon and nitrogen. We demonstrate that targeting CCCTC-containing insulator elements at the RCN2 locus confers not only decoupling tillering and panicle branching without affecting beneficial semi-dwarfism, but also improves source-to-sink carbon allocation and nitrogen-use efficiency, consequently increasing harvest index and rice yield at low nitrogen fertilization levels. Precise modulation of loop extrusion thus enables new breeding strategies to reduce nitrogen fertilizer use in high-yield cereal crops.
研究领域:
植物分子生物学
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作物遗传育种
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表观遗传学
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植物生理学
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农业可持续发展
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氮代谢
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基因组结构与功能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WASTE MANAGEMENT
·
2023
·
IF 8.1
Lin Zhu,Caihong Huang,Wei Li,Weixia Wu,Zhurui Tang,Yu Tian,Beidou Xi
Nitrogen loss from compost is a serious concern, causing severe environmental pollution. The NH 4 + -N content reflects the release of NH 3 . However, the nitrogen conversion pathway that has the greatest impact on NH 4 + -N content is still unclear. This study attempted to explore the key pathways, core functional microorganisms, and mechanisms involved in the transformation of ammonia nitrogen during composting. KEGG (Kyoto Encyclopedia of Genes and Genomes) metabolic pathways revealed that ammonia assimilation was dominated by the glutamate dehydrogenase (GDH) pathway (53.4%), which is crucial for nitrogen preservation. The combined analysis of KEGG, NR species annotation, and co-occurrence network identified 20 easy-to-regulate obligate core nitrogen-transforming functional microorganisms, including 18 ammonia-assimilating bacteria. Furthermore, the effects of environmental parameters on the obligate core functional microorganisms were investigated. The present study results provided a theoretical basis for the utilization of ten ammonia-assimilating bacteria, such as Paenibacillus , Erysipelatoclostridium, and Defluviimonas to improve the quality of compost.
研究领域:
环境科学
·
微生物学
·
堆肥技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）