Article
Plant Sciences
Yuzhen Zhou, Olena Kishchenko, Anton Stepanenko, Guimin Chen, Wei Wang, Jie Zhou, Chaozhi Pan, Nikolai Borisjuk
Summary: Duckweed plants play important roles in aquatic ecosystems by rapidly accumulating biomass and potentially remedying water pollution. A study on six duckweed species showed their preference for ammonium over nitrate and the molecular mechanisms behind nitrogen assimilation. These findings could contribute to the improvement of bioremediation and nitrogen use efficiency.
Article
Plant Sciences
Mario Giordano, Charles A. Goodman, Fengying Huang, John A. Raven, Zuoxi Ruan
Summary: In most algae, NO3- assimilation is inhibited by NH4+, but in a marine non-diazotrophic cyanobacterium, NO3- assimilation is only sensitive to NH4+ when N does not limit growth. The genetic organization and expression of NAR genes in this cyanobacterium was studied, revealing that its nitrate reductase exhibits biphasic kinetics. NH4+ insensitivity may be associated with the binding of regulator NtcA to NAR gene promoters stimulated by high 2-oxoglutarate concentrations. NH4+ sensitivity in energy-limited cells is consistent with the lower energy cost of NH4+ utilization.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Article
Plant Sciences
Catello Di Martino, Valentina Torino, Pasqualino Minotti, Laura Pietrantonio, Carmine Del Grosso, Davide Palmieri, Giuseppe Palumbo, Thomas W. Crawford, Simona Carfagna
Summary: The aim of this study was to investigate the effect of pathogenic and saprophytic endophytes on nitrogen assimilation in mycorrhized wheat plants cultivated in nutrient-deficient soils. The results showed that mycorrhized plants exhibited higher assimilative activity for nitrate and ammonium compared to the control plants. This activity was associated with increased levels of certain amino acids in the roots. Furthermore, the nutrient supply provided by the mycorrhizal fungi promoted plant growth and yield. Microbiological screening revealed the presence of various endophytic fungi in the roots.
Article
Plant Sciences
Mengyao Wang, Takahiro Hasegawa, Marcel Beier, Makoto Hayashi, Yoshihiro Ohmori, Kenji Yano, Shota Teramoto, Takehiro Kamiya, Toru Fujiwara
Summary: Nitrate is an important nutrient and signaling molecule in plants, and OsNLP4 plays a role in regulating nitrate assimilation and nitrogen use efficiency in rice. However, the nitrate sensing system and regulatory mechanisms of nitrate-related genes in rice remain unclear.
PLANT AND CELL PHYSIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Laura Matarredona, Monica Camacho, Vanesa Bautista, Maria-Jose Bonete, Julia Esclapez
Summary: The Archaea domain is composed of microorganisms with unique physiological properties and occupy diverse niches in nature. In this study, the lrp gene (HFX_RS01210) of the Lrp/AsnC transcriptional regulator family was investigated in Haloferax mediterranei, an extremely halophilic archaeon. The results suggest that Lrp is involved in stress responses, particularly under nitrogen-limiting conditions and the presence of cobalt, as indicated by the characterization of the lrp deletion mutant and the Lrp overexpressed strain.
Article
Plant Sciences
Lekshmy Sathee, Shailendra K. Jha, Ompal Singh Rajput, Dalveer Singh, Santosh Kumar, Arun Kumar
Summary: Reproductive stage salinity stress decreased membrane stability, relative water content, and osmotic potential of rice plants, affecting nitrate and ammonium assimilation. Compared to PS5, SD showed better yield stability and higher nitrogen metabolism enzyme activity.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Plant Sciences
Shambhu Krishan Lal, Sahil Mehta, Dhandapani Raju, V. Mohan Murali Achary, Ajay Kumar Venkatapuram, Shashank Kumar Yadav, Hemangini Parmar, Rakesh Pandey, Varakumar Panditi, Vijay Sheri, Anil Kumar Singh, Viswanathan Chinnusamy, Malireddy K. K. Reddy
Summary: Nitrogen is an essential macronutrient for crop productivity, but its low use efficiency leads to environmental degradation and higher input costs for farmers. This study developed a genetic strategy to improve nitrogen use efficiency in rice plants by enhancing the activity of glutamine synthetase (GS), resulting in enhanced growth and productivity. The increased nitrogen assimilation positively affected photosynthetic efficiency and C/N balance in the transgenic rice plants. However, insufficient C supply may reduce the positive effect of GS overexpression, suggesting the need for refined strategies to improve both N and C assimilation simultaneously.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Biochemistry & Molecular Biology
Julie Hodin, Christof Lind, Anne Marmagne, Christelle Espagne, Michele Wolfe Bianchi, Alexis De Angeli, Fadi Abou-Choucha, Mickael Bourge, Fabien Chardon, Sebastien Thomine, Sophie Filleur
Summary: The CLCa exchanger on the vacuole plays a critical role in plant metabolism and development. Mutant CLCaE203A not only affects water homeostasis and nitrate accumulation in plants but also enhances nitrogen uptake and use efficiency.
Article
Soil Science
Xiaoyan Hu, Xingmeng Wang, Touqeer Abbas, Tao Fang, Danni Miao, Yongfu Li, Scott X. Chang, Yongchun Li
Summary: This study found that Moso bamboo and broadleaf tree species respond differently to NH4+/NO3- ratios, with bamboo preferring NH4+ while broadleaf trees prefer NO3-, which is reflected in plant biomass and soil microbial community differences. In addition, N addition with a high NH4+/NO3- ratio not only favored biomass production for bamboo but also suppressed soil nitrification, potentially facilitating bamboo invasion into broadleaf forests.
BIOLOGY AND FERTILITY OF SOILS
(2021)
Article
Biotechnology & Applied Microbiology
Deependra Singh Rajput, Trilok Singh Rathore, Shamim Akhtar Ansari, Mohammad Faisal, Abdulrahman A. A. Alatar, Eslam M. M. Abdel-Salam, Anwar Shahzad
Summary: This investigation provides insight into the physiological and biochemical changes during somatic embryogenesis (SE) in Bambusa nutans Wall. Glutamine synthetase activity can be a potential biochemical marker for SE, while peroxidase activity and isozyme expression indicate a disorderly oxidative stress scenario. The results suggest that SE is epigenetically regulated and involves different enzyme activities and isozyme expressions in embryogenic and non-embryogenic callus.
PLANT CELL TISSUE AND ORGAN CULTURE
(2023)
Article
Biochemistry & Molecular Biology
Veronica Rodriguez-Herrero, Arnau Peris, Monica Camacho, Vanesa Bautista, Julia Esclapez, Maria-Jose Bonete
Summary: The study uncovers a new metabolic pathway in halophilic archaea, expanding the understanding of alternative nitrogen source utilization in this domain.
Article
Plant Sciences
Daxia Wu, Ying Li, Yanan Cao, Ripeng Hu, Xu Wu, Wei Zhang, Wenqing Tao, Guohua Xu, Xiaochun Wang, Yali Zhang
Summary: Increasing GS activity in rice by overexpressing TaGS1 gene significantly enhances plant yield and nitrogen use efficiency, mainly through promoting root capacity, N accumulation and remobilization to grains.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Plant Sciences
Jiajian Cao, Xuelian Zheng, Dongling Xie, Hui Zhou, Shujun Shao, Jie Zhou
Summary: The ATG6-dependent autophagy pathway regulates nitrogen utilization in tomato plants under low-nitrogen conditions. It increases nitrogen content by controlling the expression of nitrogen transporter genes in roots and enhances nitrogen assimilation efficiency and protein production in leaves. Furthermore, ATG6-dependent autophagy increases plant carbon fixation and photosynthetic capacity.
HORTICULTURE RESEARCH
(2022)
Article
Environmental Sciences
Cheng-Zhi Li, Yu-Xi Feng, Xiao-Zhang Yu
Summary: The biosynthesis of amino acids in plants is influenced by different nitrogen sources. The effects of exogenous cyanide on the concentrations and profiles of amino acids in rice seedlings were studied under different nitrogen conditions. The targeted metabolomics analysis revealed that the highest accumulation of amino acids was observed in rice seedlings treated with cyanide and ammonium, regardless of the dosage of cyanide. The tissue-specific profiles of amino acids varied under different nitrogen fertilization conditions. The relative importance index was used to evaluate the importance of amino acids in cyanide-treated rice seedlings under different nitrogen conditions.
Article
Forestry
Jiayu Zhang, Guangzhen Qin, Zheng Zhai, Shichao Zhou, Luozhong Tang, Ye Tian
Summary: This study showed that increasing the species richness of understory vegetation in plantations can help alleviate nitrogen competition with crop trees and effectively coordinate nitrogen utilization, thereby promoting tree growth.
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)