Article
Engineering, Environmental
Li Wu, Zhirui An, Jie Zhou, Feiyang Chen, Bolin Liu, Lin Qi, Guoyu Yin, Hongpo Dong, Min Liu, Lijun Hou, Yanling Zheng
Summary: This study reveals the effects of acidification on nitrogen removal processes in estuarine and coastal waters. It shows that denitrification rates decrease while anammox process rates increase under acidified conditions. The study also finds that acidic conditions lead to increased nitrous oxide emissions and altered microbial communities in sediment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Wen-Bo Nie, Jie Ding, Guo-Jun Xie, Xin Tan, Yang Lu, Lai Peng, Bing-Feng Liu, De-Feng Xing, Zhiguo Yuan, Nanqi Ren
Summary: ANME archaea can mediate simultaneous sulfate- and nitrate-dependent anaerobic oxidation of methane, forming a crucial link between the carbon, nitrogen, and sulfur cycles in natural environments. They collaborate with sulfate-reducing bacteria to convert sulfate to sulfide and then sulfide-oxidizing autotrophic denitrifiers to oxidize sulfide back to sulfate, thereby alleviating sulfide accumulation. The unique nanonets formed by ANME-2d and SRB likely facilitate electron transfer, highlighting the complex interactions in methane oxidation processes.
Article
Plant Sciences
Jose Lopez-Bucio, Randy Ortiz-Castro, Viridiana Magana-Duenas, Elizabeth Garcia-Cardenas, Kiran Rubi Jimenez-Vazquez, Javier Raya-Gonzalez, Ramon Pelagio-Flores, Enrique Ibarra-Laclette, Luis Herrera-Estrella
Summary: Cross-kingdom communication with bacteria is crucial for plant growth and productivity. Disrupting the quorum-sensing system of P. aeruginosa through co-cultivation with Arabidopsis seedlings promotes growth and root branching, and induces gene expression for improved nitrate uptake and assimilation.
Review
Environmental Sciences
Xuan Wang, Guo-Jun Xie, Ning Tian, Cheng-Cheng Dang, Chen Cai, Jie Ding, Bing-Feng Liu, De-Feng Xing, Nan-Qi Ren, Qilin Wang
Summary: This review comprehensively analyzes the redox cycles of manganese in the environment, and discusses its importance in greenhouse gas mitigation, nutrient loading, microbial bioremediation, and global biogeochemical cycles. The oxidation and reduction of manganese occur cyclically and simultaneously in water, soil, and sediment environments, coupled with microorganisms, providing promising opportunities for the remediation of contaminated environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Marine
Lin Hao, Jiafang Huang
Summary: Land-use change significantly affects NOx- reduction processes in mangrove sediments, with aquaculture reclamation enhancing nitrogen loss and reducing nitrogen retention in sediments.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Yang Lu, Gayathri Natarajan, Thi Quynh Ngoc Nguyen, Sara Swa Thi, Krithika Arumugam, Thomas Seviour, Rohan B. H. Williams, Stefan Wuertz, Yingyu Law
Summary: Conventional nitrogen removal in wastewater treatment requires high oxygen and energy input. Anaerobic ammonium oxidation (anammox) is a more energy and cost-effective alternative, but further research is needed to better understand species diversity and physiology. Multiple anammox bacteria species coexist and occupy sub-niches in anammox reactors, and the dominant population can be reversibly shifted by changing nitrogen load. This has implications for wastewater process design.
SCIENTIFIC REPORTS
(2022)
Article
Agricultural Engineering
Xuejiao Qiao, Chenkun Fu, Yizhen Chen, Fang Fang, Yaoyu Zhang, Lingyun Ding, Kai Yang, Baozhu Pan, Nan Xu, Ke Yu, Huchun Tao, Lijuan Zhang
Summary: It was found that 20 μg/L of fluoroquinolones promoted the nitrogen removal performance of anammox microorganisms and removed 36-51% of the drugs. Metabolomics and genome-resolved metagenomic analysis revealed enhanced carbon fixation, purine and pyrimidine metabolism, protein generation, and transmembrane transport in anammox bacteria and symbiotic bacteria in response to 20 μg/L of fluoroquinolones. Consequently, hydrazine dehydrogenation, nitrite reduction, and ammonium assimilation were bolstered, improving the nitrogen removal efficiency of the anammox system.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jianhua Wu, Shuhui Cui, Qiliang Zhang, Li Zhang, Jinlong Zhuang, Feiyue Qian
Summary: This study used a modified ABR reactor to start up the combined anammox and SPD process for improved nitrogen removal. The findings showed that a stepwise decrease in hydraulic retention time promoted the anammox and endogenous denitrification reactions, and the input of PHBV hydrolysate facilitated heterotrophic denitrification and increased the complexity of microbial co-occurrence networks.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Agricultural Engineering
V. Kouba, Ch. Bachmannova, T. Podzimek, P. Lipovova, M. C. M. van Loosdrecht
Summary: This study reviewed the mechanisms of anaerobic ammonium oxidation (anammox) bacteria adaptation to low temperatures, which include synthesizing molecular chaperones and chemical chaperones, reducing biosynthesis, and preserving energy for core metabolism. The study proposed biomarkers to assess the extent of bacteria adaptation and predict the decomposition of biofilms/granules or slower growth.
BIORESOURCE TECHNOLOGY
(2022)
Article
Microbiology
Paula Dalcin Martins, Maider J. Echeveste Medrano, Arslan Arshad, Julia M. Kurth, Heleen T. Ouboter, Huub J. M. op den Camp, Mike S. M. Jetten, Cornelia U. Welte
Summary: Microbial communities play a crucial role in carbon, sulfur, and nitrogen cycling in coastal ecosystems. However, little is known about how these communities respond to changes in substrate availability and exposure to toxic compounds. In this study, metagenomics and metatranscriptomics were used to investigate the structure and transcriptional responses of microbial communities in a controlled bioreactor system mimicking coastal sediment conditions. The results showed that some microbial species were more resilient to experimental conditions than others, and certain community functions, such as methane and sulfur oxidation, remained stable despite shifts in community structure. Further studies are needed to understand how coastal ecosystems respond to future disturbances.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Chenyang Ma, Wei Zeng, Haohao Miao, Shuangshuang Li, Yongzhen Peng
Summary: This study finds that the addition of zeolite powder enhances the competition between anammox bacteria and nitrite in the SPDA process, resulting in improved nitrogen removal. Zeolite powder enrichment promotes various metabolic pathways and improves particle characteristics, leading to enhanced nitrogen removal efficiency. The high ammonia concentration enriched by zeolite powder also positively affects anammox activity.
ENVIRONMENTAL RESEARCH
(2023)
Article
Microbiology
Samuel J. Bryson, Kristopher A. Hunt, David A. Stahl, Mari-Karoliina H. Winkler
Summary: This study investigated the differences in microbial community structure and nitrogen transforming functions under one-stage and two-stage reactor configurations. It was found that oxygen availability and gradient in one-stage systems provided a larger niche space for heterotrophic populations compared to the homogeneous anoxic environment in two-stage systems, impacting the competition for carbon substrates between denitrifying and DNRA heterotrophs.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Mohammad Monirul Islam Chowdhury, George Nakhla
Summary: The study aimed to develop sustainable anammox gel beads using sodium alginate mixed with different support materials. Through detailed characterization and comparison, SA-SS beads showed superior durability and reactor performance.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Wei Wang, Bangjing Ding, Youyou Hu, Hui Zhang, Yanqing He, Yuecheng She, Zhengkui Li
Summary: This study proved the coexistence of Feammox and NDFO in natural enrichment, forming nitrogen and iron cycles. Sodium acetate and 9,10-anthraquinone-2,6-disulfonate (AQDS) were found to promote the reaction. 16S rRNA sequencing revealed Pseudomonas, Rhodanobacter, Acinetobacter and Thermomonas as dominant genera in the enrichment cultures.
Article
Agricultural Engineering
Linqin Tang, Chengyuan Su, Cuiping Fan, Ruting Li, Yuchen Wang, Shu Gao, Menglin Chen
Summary: The effects of PFOA on the nitrogen removal performance, microbial community, and functional genes in an ABR were investigated. The results showed that increasing PFOA concentration decreased the removal efficiencies of NH4+-N and NO2--N, as well as the relative abundance of specific microbial species and the expression of anammox genes in the sludge.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Olga M. Zygadlowska, Jessica Venetz, Robin Klomp, Wytze K. Lenstra, Niels A. G. M. van Helmond, Thomas Rockmann, Anna J. Wallenius, Paula Dalcin Martins, Annelies J. Veraart, Mike S. M. Jetten, Caroline P. Slomp
Summary: This study investigates the production and fate of methane (CH4) in the sediments of Lake Grevelingen, the Netherlands. The results show that under oxygenated conditions, methane is partially removed through oxidation, while under anoxic conditions, it accumulates in the bottom waters. The study also suggests a potential role of metal oxides in methane removal.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Heleen T. Ouboter, Arslan Arshad, Stefanie Berger, Jesus Gerardo Saucedo Sanchez, Huub J. M. op den Camp, Mike S. M. Jetten, Cornelia U. Welte, Julia M. Kurth
Summary: This study describes the biochemical properties of ACS and ACD enzymes from ANME-2 archaea, adding to our knowledge of these enzymes. It also validates the in situ activity of ACS in ANME-2d, demonstrating the conversion of acetate into methane.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Microbiology
Carolina Suarez, Thomas Hackl, Britt-Marie Wilen, Frank Persson, Per Hagelia, Mike S. M. Jetten, Paula Dalcin Martins
Summary: This study investigated the concrete biodeterioration in the Oslofjord subsea road tunnel and found bacterial genomes related to nitrogen and metal cycling in biofilm samples, which might contribute to the deterioration of concrete.
FEMS MICROBIOLOGY LETTERS
(2023)
Article
Ecology
Xiaomin Wang, Shanyun Wang, Yuanhe Yang, Hanqin Tian, Mike S. M. Jetten, Changchun Song, Guibing Zhu
Summary: Since the start of the Anthropocene, northern seasonally frozen peatlands have been warming rapidly, resulting in increased nitrogen mineralization and substantial emissions of nitrous oxide (N2O) during the thawing periods in spring. Heterotrophic bacterial and fungal denitrification were identified as the main sources of N2O in frozen peatland profiles. Thawing significantly stimulates the expression of genes encoding N2O-producing protein complexes, leading to high N2O emissions during the spring thawing period.
Article
Engineering, Environmental
Ping Han, Ana B. Rios-Miguel, Xiufeng Tang, Yaochun Yu, Li-Jun Zhou, Lijun Hou, Min Liu, Dongyao Sun, Mike S. M. Jetten, Cornelia U. Welte, Yujie Men, Sebastian Lucker
Summary: This study investigated the metabolic capacity of comammox Nitrospira inopinata and Nitrospira kreftii to transform benzimidazole fungicides. The comammox bacteria were found to actively transform all the tested fungicides, except for thiabendazole. The identified transformation products suggested hydroxylation, S-oxidation, and glycosylation as the major biotransformation pathways.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Multidisciplinary Sciences
Rob A. Schmitz, Stijn H. Peeters, Sepehr S. Mohammadi, Tom Berben, Timo van Erven, Carmen A. Iosif, Theo van Alen, Wouter Versantvoort, Mike S. M. Jetten, Huub J. M. op den Camp, Arjan Pol
Summary: Aerobic methanotrophic bacteria can survive in sulfide-rich environments, despite the inhibitory effects of hydrogen sulfide (H2S) on methane oxidation and aerobic respiration. This is due to the upregulation of a sulfide-insensitive terminal oxidase, allowing the microorganism to oxidize both methane and H2S simultaneously.
NATURE COMMUNICATIONS
(2023)
Article
Microbiology
Carmen Hogendoorn, Arjan Pol, Rob de Graaf, Paul B. White, Rob Mesman, Peter M. van Galen, Theo A. van Alen, Geert Cremers, Robert S. Jansen, Mike S. M. Jetten, Huub J. M. Op den Camp
Summary: The production of organic molecules can be achieved by synthesizing them from CO2 and a cheap energy source, instead of relying on fossil fuels. Volcanic and geothermal areas, which have abundant CO2 and reduced inorganic gases, provide habitats where novel chemolithoautotrophic microorganisms for organic compound synthesis can be discovered. A thermoacidophilic, autotrophic H-2-oxidizing microorganism called Candidatus Hydrogenisulfobacillus filiaventi R50 was found to fix CO2 and produce more than 0.54 mol of organic carbon per mole of fixed CO2. This discovery opens up possibilities for the sustainable production of important biomolecules using chemolithoautotrophic microorganisms.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Physiology
Wouter Mes, Philippe Kersten, Roel M. Maas, Ep H. Eding, Mike S. M. Jetten, Henk Siepel, Sebastian Lucker, Marnix Gorissen, Maartje A. H. J. Van Kessel
Summary: Accumulation of ammonia is a challenge in intensive aquaculture, and feeding strategy and dietary protein content can impact fish growth and nitrogen metabolism. Nitrogen cycle bacteria in the gills convert ammonia to N-2 and potentially explain the unaccounted nitrogen in the balance.
FRONTIERS IN PHYSIOLOGY
(2023)
Review
Environmental Sciences
Ana B. Rios-Miguel, Tamara J. H. M. van Bergen, Caterina Zillien, Ad M. J. Ragas, Rosalie van Zelm, Mike S. M. Jetten, A. Jan Hendriks, Cornelia U. Welte
Summary: Organic micropollutants (OMPs), including pharmaceuticals and pesticides, can persist in water at low concentrations and pose a threat to aquatic ecosystems and drinking water quality. The effectiveness of wastewater treatment plants (WWTPs) in removing OMPs varies due to factors such as low concentrations, stable chemical structures, and suboptimal conditions. This review discusses these factors, focusing on the adaptation of microorganisms to degrade OMPs. Recommendations are made to improve prediction models and optimize microbial treatment strategies for OMP removal.
Article
Microbiology
Jessica Venetz, Olga M. Zygadlowska, Wytze K. Lenstra, Niels A. G. M. van Helmond, Guylaine H. L. Nuijten, Anna J. Wallenius, Paula Dalcin Martins, Caroline P. Slomp, Mike S. M. Jetten, Annelies J. Veraart
Summary: This study explores the potential and drivers of microbial methane removal in a stratified coastal marine system. It reveals the presence of diverse methanotrophic communities with high genomic versatility and adaptability, which contribute to the functional resilience and efficiency of methane removal.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Geochemistry & Geophysics
Rachel Schwartz-Narbonne, Philippe Schaeffer, Sabine K. Lengger, Jerome Blewett, D. Martin Jones, Estelle Motsch, Andrew Crombie, Mike S. -M. Jetten, Deirdre Mikkelsen, Philippe Normand, Guylaine H. L. Nuijten, Richard D. Pancost, Darci Rush
Summary: Lipid biomarkers, such as BHT isomers, can be used to trace bacterially mediated nitrogen and carbon cycle processes affecting greenhouse gas emissions. The source of BHT-34R in freshwater environments can be determined by its 813C value, and the presence of BHT-34R with low 813C values can be used as a novel tool to trace anammox in freshwater environments.
ORGANIC GEOCHEMISTRY
(2023)
Article
Environmental Sciences
Wouter Mes, Sebastian Lucker, Mike S. M. Jetten, Henk Siepel, Marnix Gorissen, Maartje A. H. J. van Kessel
Summary: Recirculating aquaculture systems (RAS) are used to grow fish, with biofilters containing nitrogen-cycling microorganisms. This study compared the microbial communities of RAS water and biofilter with the gut and gill microbiomes of zebrafish and common carp. The location of sampling had a stronger effect on community composition than the fish species, with distinct differences observed between the fish-associated microbiomes and the RAS microbiomes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Meeting Abstract
Biophysics
Lea Dietrich, Tadeo Moreno Chicano, Naomi M. Almeida, Mohd Akram, Mike Jetten, Laura van Niftrik, Andreas Dietl, Boran Kartal, Thomas R. M. Barends, Kristian Parey
BIOPHYSICAL JOURNAL
(2023)
Article
Microbiology
Martyna Glodowska, Yinxiao Ma, Garrett Smith, Andreas Kappler, Mike Jetten, Cornelia U. Welte
Summary: The input of nitrate to the aquifer inhibits Fe(III) reduction and As mobilization preventing As groundwater contamination. However, the addition of N-DAMO enrichment cultures led to Fe(III) reduction and stimulated As and Mn release into the water. Our results suggest that input of N fertilizers to the aquifer decreases As mobility and that CH4 cannot serve as an electron donor for NO3- reduction.
FEMS MICROBIOLOGY ECOLOGY
(2023)
Article
Engineering, Environmental
Ana B. Rios-Miguel, Garrett J. Smith, Geert Cremers, Theo van Alen, Mike S. M. Jetten, Huub J. M. Op den Camp, Cornelia U. Welte
Summary: Pharmaceutical micropollutants pose environmental risks by entering water bodies worldwide. Paracetamol plays a unique role in microbial degradation, but the genes and enzymes involved are still unknown. Metagenomic analysis of a bioreactor revealed a diverse microbial community, including two Pseudomonas species, suggesting a complex pathway for paracetamol degradation.
