Article
Biotechnology & Applied Microbiology
Shoichiro Kameoka, Daisuke Motooka, Satoshi Watanabe, Ryuichi Kubo, Nicolas Jung, Yuki Midorikawa, Natsuko O. Shinozaki, Yu Sawai, Aya K. Takeda, Shota Nakamura
Summary: The study compared 192 Japanese volunteers' fecal 16S analysis data using modified V1-V2 and standard V3-V4 primers. Results showed that the bacterial composition derived from the V34 region might differ from the actual abundance, suggesting that the modified V12 primer set is more desirable for analyzing the Japanese gut microbiota.
Article
Biotechnology & Applied Microbiology
Christine Drengenes, Tomas M. L. Eagan, Ingvild Haaland, Harald G. Wiker, Rune Nielsen
Summary: This study found that the number of PCR steps can affect the final description of bacterial communities, especially for samples with low bacterial load. Although differences in relative abundance of specific bacterial genera were observed across different setups, the removal of contaminants did not resolve differences in results between sequencing setups. Further research is needed to understand how variations in PCR setups and reagents may contribute to observed protocol bias.
Article
Optics
D. Jacquemart, O. M. Lyulin, A. M. Solodov, T. M. Petrova, A. . A. . Solodov
Summary: The Q-branch of the v1 + v3 + 3v4 cold band of 12C2H2 at 8330 cm-1 has been observed and a line list for this isolated and strong Q-branch has been obtained through analysis. This work completes a significant update of acetylene data in the AP = 13 spectral region (8200 and 8900 cm-1) in the 2020 edition of spectroscopic databases (HITRAN and GEISA).
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2022)
Article
Agriculture, Dairy & Animal Science
Limin Wei, Weiying Zhou, Zhaojing Zhu
Summary: This study compares the changes in the gut microbiota of wild boars and domestic pigs and finds significant differences between the two groups, indicating that the gut microbiota has changed during the evolution process. This provides some data references for the evolution of gut microbiota.
Article
Engineering, Environmental
Maria Prieto-Espinoza, Sylvain Weill, Benjamin Belfort, Emilie E. L. Muller, Jeremy Masbou, Francois Lehmann, Stephane Vuilleumier, Gwenael Imfeld
Summary: The study investigated the impact of water table fluctuations on DCM biodegradation in aquifers, showing that fluctuations enhanced DCM degradation and were associated with bacterial taxa involved in anaerobic DCM degradation.
Article
Microbiology
Taobing Yu, Lang Cheng, Qi Liu, Shasha Wang, Yuan Zhou, Hongbin Zhong, Meifang Tang, Hai Nian, Tengxiang Lian
Summary: Waterlogging significantly affects the bacterial community structure of soybean rhizosphere and increases the relative abundance of certain microorganisms related to nitrogen and phosphorus cycling. LoopSeq sequencing offers improved accuracy and lower sequencing prices, enabling accurate species-level and strain identification. This study provides insights into the role of enriched microorganisms in assisting soybeans to resist waterlogging stress and compares different sequencing methods.
MICROBIOLOGY SPECTRUM
(2022)
Article
Agronomy
Zhaobin Xia, Xinuo Lai, Xing Zhao, Lu Wang, A. Gayuebumo, Xiangyu Yin, Zhihua Ren, Chaoxi Chen
Summary: This study evaluated the effects of three antibiotics on Nicandra physalodes and its rhizobacterial community. The results showed that the antibiotics influenced the growth behavior, biomass, soil enzyme activity, and bacterial diversity of Nicandra physalodes. This research provides a scientific basis for the rational use of antibiotics in animal husbandry and veterinary science.
Article
Optics
Ayan Kumar Pal, Naveen Kumar, R. J. Kshirsagar
Summary: Acetylene is studied using external-cavity diode laser absorption spectroscopy to measure self-broadening coefficients and line intensities. The measurements were compared to a database, showing slight differences. The study provides important molecular parameters for modeling planetary atmospheres.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Environmental Sciences
Min Zhou, Fu-Tao Fang, Cong Zeng, Li-Hong Zhang, Cheng-Xu Zhou, Zhuo-Yi Zhu
Summary: This study reveals the community competition among microorganisms in response to carbon degradation, with a small proportion of winning microbes contributing significantly. Network analysis further confirms the oppressive relation between winners and other microorganisms, suggesting a survival strategy of uniting losers and centrists.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
M. Chhimwal, R. K. Srivastava, A. Mudgal, S. Khan
Summary: Oxidation pond, as a traditional method of wastewater treatment, utilizes microbial diversity to degrade organic pollutants. This study used 16S V3-V4 rRNA analysis to reveal the microbial taxonomy in the oxidation pond, and found that bacteria dominated the microbial community. Species that contributed to nitrate and phosphate reduction, antibiotic resistance bacteria, and a potentially harmful pathogen were also identified. Overall, the oxidation pond system is a cost-effective approach for wastewater treatment in areas with available land.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Yan Ji, Bing Hu, Youzhen Wang, Guifang Dong, Chi Zhang, Denghang Yu
Summary: The study found that glycerol tributyrin (TB) can regulate the intestinal microbial community and promote hepatic lipid metabolism in grass carp. TB can alleviate fatty liver in grass carp by increasing the relative abundance of short-chain fatty acids in the intestine. Additionally, TB inhibits the production of secondary bile acids, slowing down fat synthesis and alleviating the accumulation of liver lipids in grass carp.
FISH PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Ophthalmology
Spandita Pal, Gorati Vani, Sisinthy Shivaji, Pragnya Rao Donthineni, Sayan Basu, Kotakonda Arunasri
Summary: In this study, a less invasive approach of tear collection was used to establish the bacterial microbiome in healthy eyes. The results showed that tear microbiome is comparable with conjunctival swab microbiome, but differs in the abundance of the bacterial genera.
EXPERIMENTAL EYE RESEARCH
(2022)
Article
Microbiology
Bartosz Czech, Joanna Szyda, Kai Wang, Hanpeng Luo, Yachun Wang
Summary: This study analyzed the microbiome composition in Chinese Holstein cows and identified bacteria associated with heat stress. These bacteria can serve as biomarkers for further microbiological studies and provide insights into the effects of heat stress on cows.
Article
Microbiology
Vishnu Raja Vijayakumar, Karthikeyan Saravanan, Maharaja Somasundaram, Rajkumar Jayaraj, Panneerselvam Annamalai, Thajuddin Nooruddin, Dhanasekaran Dharumadurai
Summary: A lichen is a composite organism formed of algae or cyanobacteria that live in a symbiotic relationship with fungus. This study analyzed the microbial composition of lichen samples from different habitats and found distinct differences in their profiles. The results suggest that the bacterial population associated with corticolous lichen is influenced by geographic locations and growth environments.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Ecology
Alexi C. Besser, Philip J. Manlick, Christina M. Blevins, Cristina D. Takacs-Vesbach, Seth D. Newsome
Summary: Herbivores often lack sufficient protein, but this study found that gut microbes play a vital role in maintaining the protein balance of wild animals, providing essential amino acids for their hosts. Using isotope analysis, researchers discovered that herbivorous rodents obtain a significant portion (around 40%-50%) of their essential amino acids from gut microbes, while omnivores and insectivores primarily rely on plant-based energy sources but still receive about 20% of essential amino acids from their gut microbes. These findings demonstrate the importance of gut microbes in host protein metabolism in wild animals.
Article
Environmental Sciences
Katharina Lehmann, Robert Lehmann, Kai Uwe Totsche
Summary: The study highlights the importance of considering the dynamics of the total mobile inventory, including particulates >0.45 pm, in understanding carbon and elemental fluxes as well as nutrient cycles and subsurface ecosystem functioning. Seasonal and episodic dynamics of the total mobile inventory in undisturbed soil are influenced by atmospheric forcing, with episodic events like snow melts and rainstorms significantly contributing to the export of inorganic/organic matter beyond the subsoil-regolith boundary.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Andreas Fritzsche, Julian Bosch, Michael Sander, Christian Schroder, James M. Byrne, Thomas Ritschel, Prachi Joshi, Markus Maisch, Rainer U. Meckenstock, Andreas Kappler, Kai U. Totsche
Summary: In redoximorphic soils, microbial reduction of iron (III) minerals is significantly influenced by organic matter, which can either decelerate or accelerate the reduction rate. The organic matter released by microbial activity under anaerobic conditions (efOM) plays a key role in affecting the electron uptake and crystallinity of iron (III) minerals. The presence of efOM, whether adsorbed or coprecipitated, leads to distinct effects on microbial reduction of iron (III) minerals by affecting the surface passivation and altering the mineral structure.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Tom Guhra, Thomas Ritschel, Kai Uwe Totsche
Summary: A comprehensive modeling study on the evolution of an aggregated three-dimensional structure due to diffusion, surface interactions, and gravity revealed three mechanisms of aggregation and showed how the balance of different interactions determines the rate of aggregation. The 3D visualization tool allowed tracking of subtle interplay of mechanisms and dynamic hierarchical self-assembly of aggregates.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Soil Science
Simon Zech, Thomas Ritschel, Nadja Ray, Kai Uwe Totsche, Alexander Prechtel
Summary: Microaggregates, as hot spots of microbial activity, pose challenges in direct observation due to their small scale. Mathematical models combining organic matter transport mechanisms and turnover processes can help understand soil microbial dynamics at these scales. This study showed that the heterogeneous distribution of substrate and bacteria in microaggregates impacts overall biodegradation kinetics and CO2 output, with smaller microaggregate scales having a more significant impact.
Review
Soil Science
Tom Guhra, Katharina Stolze, Kai Uwe Totsche
Summary: Soil organisms play important roles as ecosystem engineers in promoting soil aggregation, enhancing soil quality, and nutrient cycling. The complex composition of biogenically excreted organic matter can either promote or inhibit aggregation, affecting aggregate formation, stability, and transport through various functional roles.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Editorial Material
Microbiology
Patricia Geesink, Thijs J. G. Ettema
NATURE MICROBIOLOGY
(2022)
Editorial Material
Multidisciplinary Sciences
Rocio Deanna, Bethann Garramon Merkle, Kwok Pan Chun, Deborah Navarro-Rosenblatt, Ivan Baxter, Nora Oleas, Alejandro Bortolus, Patricia Geesink, Luisa Diele-Viegas, Valeria Aschero, Maria Jose de Leone, Sonia Oliferuk, Rui Zuo, Andrea Cosacov, Mariana Grossi, Sandra Knapp, Alicia Lopez-Mendez, Elina Welchen, Pamela Ribone, Gabriela Auge
Summary: Mentor relationships are crucial for the retention, success, and well-being of women and underrepresented minority scientists in academia. A diverse network of mentors can support the achievement of long-term career goals, advancement, and retention of both mentors and mentees, thereby enhancing diversity, equity, and inclusion initiatives.
NATURE COMMUNICATIONS
(2022)
Article
Soil Science
Katharina Stolze, Andrew D. Barnes, Nico Eisenhauer, Kai U. Totsche
Summary: This study investigates the linkage between earthworms, roots, and soil properties with the number of biopores. It reveals complex relationships among roots, earthworms, biopores, and soil properties, with land-use intensity playing a significant role. The occurrence, frequency, and persistence of biopores are found to be influenced by these interdependencies.
Article
Microbiology
Patricia Geesink, Martin Taubert, Nico Jehmlich, Martin von Bergen, Kirsten Kuesel
Summary: This study investigated the effects of adding necromass to the microbial community in fractured bedrock groundwater. The results showed that a few primary degraders rapidly utilized the labeled necromass, followed by a concerted action of groundwater microorganisms, and eukaryotes assimilated necromass-derived carbon either directly or indirectly.
MICROBIOLOGY SPECTRUM
(2022)
Article
Engineering, Environmental
Christian Zerfass, Robert Lehmann, Nico Ueberschaar, Carlos Sanchez-Arcos, Kai Uwe Totsche, Georg Pohnert
Summary: Understanding the composition, transport and evolution of dissolved organic matter in groundwater is crucial for its protection and sustainable use. Groundwater metabolomics provides valuable insights into the response of groundwater ecosystems to external impacts and the effects of recharge dynamics.
Article
Environmental Sciences
Thomas Ritschel, Kai Uwe Totsche
Summary: Soil biogeochemistry is interconnected with the redox cycling of iron and manganese, where manganese oxides serve as electron acceptors and might be reduced by organic substances as electron donors. In this study, we investigated the impact of low-molecular-weight organic acids (LMWOA) on the transformation of birnessite. Our findings suggest that the reductive transformation of birnessite into more stable forms of manganese oxides is facilitated by the oxidation of LMWOA, which serves as electron donors. This process plays a critical role in controlling the abundance of LMWOA in natural systems.
Article
Agronomy
Tom Guhra, Arnold Wonneberger, Katharina Stolze, Thomas Ritschel, Kai Uwe Totsche
Summary: This study investigates the role of cutaneous earthworm mucus (CEM) in soil organic-mineral associations and aggregation. The results suggest that pH and concentration affect the adsorption of CEM to goethite. Furthermore, mucus-mineral associations contribute to soil structure and nutrient storage.
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
(2023)
Article
Environmental Sciences
Saqr Munassar, Guillaume Monteil, Marko Scholze, Ute Karstens, Christian Roedenbeck, Frank-Thomas Koch, Kai U. Totsche, Christoph Gerbig
Summary: This study analyzes the impact of atmospheric transport on estimating CO2 fluxes over Europe in 2018 using two atmospheric inversion systems. The main focus is to quantify the drivers of spread in CO2 estimates from atmospheric tracer inversions. The results show that differences in the mesoscale transport model contribute the most to the discrepancies in annual budget, followed by far-field contributions and the inversion systems. Varying the mesoscale transport leads to large discrepancies in spatial and temporal patterns, while changing the lateral boundary conditions result in more homogeneous impact. The choice of inversion system and prior error structure also have significant impacts on the CO2 estimates.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Soil Science
Martina Herrmann, Katharina Lehmann, Kai Uwe Totsche, Kirsten Kuesel
Summary: The translocation of soil microorganisms across the soil-regolith boundary through seepage plays a vital role in connecting surface and subsurface habitats. This study investigated the factors influencing this translocation and found that the taxonomic identity of bacteria and the seasonal infiltration regime were the main drivers. The results highlight the continuous export of substantial bacterial biomass from soils to subsurface environments and suggest that the introduction of bacterivorous or potential pathogenic taxa from soil to groundwater may be an important factor in groundwater food webs.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Environmental Sciences
Saqr Munassar, Christian Rodenbeck, Frank-Thomas Koch, Kai U. Totsche, Michal Galkowski, Sophia Walther, Christoph Gerbig
Summary: Three-hourly net ecosystem exchange (NEE) estimation and uncertainty assessment on the European continent at a spatial scale of 0.25 degrees revealed significant impact from the selection of atmospheric stations, with smaller contributions from biosphere and ocean ensembles. Unprecedented temperature increase and drought events in 2018 and 2019 led to reduced CO2 uptake and weaker sink of CO2 in Europe.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.