Article
Environmental Sciences
Alexander W. McCumber, Yeon Ji Kim, Omoanghe Samuel Isikhuemhen, Robert M. Tighe, Claudia K. Gunsch
Summary: Using a pig model, the study showed that airborne bacteria make up the largest portion of the lung microbiome. Bacteria from bronchial samples can be correctly identified by their farm of origin, while those from alveolar samples are indistinguishable.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Microbiology
Yousri Abdelhafiz, Jorge M. O. Fernandes, Claudio Donati, Massimo Pindo, Viswanath Kiron
Summary: In this study, the vertical transmission of microbes across generations in fishes was investigated using Nile tilapia. The analysis revealed that the core microbiome in the parents' buccal cavity and posterior intestine shapes the gut microbiome of the progeny. The identified core microbiome bacteria, Nocardioides, Propionibacterium, and Sphingomonas, play an essential role in the health and development of offspring in a similar way as in mammals.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xiangchun Zhang, Zhichao Zhang, Qingming Shu, Chao Xu, Qinqin Zheng, Zhao Guo, Chen Wang, Zhenxia Hao, Xin Liu, Guoqing Wang, Wangjun Yan, Hongping Chen, Chengyin Lu
Summary: CuCs is a novel antibacterial molecule with broad-spectrum and excellent antibacterial activity, able to disrupt bacterial wall structure, regulate GSH/GSSG ratio, induce reactive oxygen species production, and ultimately lead to bacterial death. In vivo studies in mice demonstrate that CuCs can significantly treat skin wound infections and sepsis caused by MRSA, with similar therapeutic efficacy as mupirocin ointment and vancomycin. Compared to silver and platinum clusters, CuCs show extremely low cytotoxicity to normal mammalian cells.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xin Fan, Yang Gao, Fan Yang, Jian Liang Low, Lei Wang, Beate Paulus, Yi Wang, Andrej Trampuz, Chong Cheng, Rainer Haag
Summary: A bionanocatalyst Au@CuBCats containing dual-enzyme mimetics is synthesized to control glucose concentration and bacteria in diabetic ulcers, which demonstrates excellent antibacterial therapeutic efficacy.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Ecology
Hu Cui, Lixia Wang, Jian Zhang
Summary: This study analyzed the bacterial and fungal structures in Cu/TCH-amended composting and found that Cu and TCH had a significant impact on fungi but not on bacteria. TOC and TN were identified as the primary controls on microbial diversity, with NH4+-N and NO3--N being more beneficial to fungi.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Microbiology
Candice Mazoyon, Stephane Firmin, Lamine Bensaddek, Audrey Pecourt, Amelie Chabot, Michel-Pierre Faucon, Vivien Sarazin, Frederic Dubois, Jerome Duclercq
Summary: The use of biological inputs is a promising approach to improve crop production and reduce chemical inputs. Understanding the chemical communication between bacteria and plants is crucial for optimizing this approach.
Article
Multidisciplinary Sciences
Vanessa Grenier, Emmanuel Gonzalez, Nicholas J. B. Brereton, Frederic E. Pitre
Summary: Decomposing organic waste can contribute to greenhouse gas emissions. Composting can reduce these emissions and produce sustainable fertilizer. However, we still have limited understanding of the microbial communities involved in composting and their role in the process.
Article
Environmental Sciences
Dongdong Song, Siqi Zhu, Lizhao Chen, Ting Zhang, Li Zhang
Summary: In this study, the genome of an As-resistant bacterium strain S. maltophilia was sequenced and its arsenic metabolism strategy was investigated. The bacterium transformed As(V) to organic arsenicals, reduced As accumulation, and synthesized less toxic AsB. The heterologous expression of specific genes increased resistance in E. coli. This study also revealed the potential synthetic pathway of AsB in bacteria, improving our understanding of As toxicology in microorganisms.
ENVIRONMENTAL POLLUTION
(2022)
Article
Microbiology
Jicao Dao, Yuanjun Xing, Chunyi Chen, Mianhe Chen, Ziting Wang
Summary: This study investigated the effects of different levels of drought stress on the rhizosphere microbial communities of sugarcane. The results showed that mild drought stress induced the recruitment of specific bacterial communities in the sugarcane rhizosphere to resist drought. The interactions between root tip number, total root length, and drought-resistant bacterial strains improved sugarcane survival under drought. These findings provide a theoretical basis for the rhizosphere microbiome to enhance drought resistance in sugarcane under different levels of drought stress.
MICROBIOLOGY SPECTRUM
(2023)
Article
Microbiology
Jicao Dao, Yuanjun Xing, Chunyi Chen, Mianhe Chen, Ziting Wang
Summary: Sugarcane is highly sensitive to changes in moisture, and increased drought severely restricts its growth and productivity. Plant growth-promoting microorganisms play an essential role in reducing the adverse effects of environmental stresses, especially drought. However, our knowledge about the dynamics of rhizosphere microbial community structure in sugarcane under varying degrees of drought stress is limited.
MICROBIOLOGY SPECTRUM
(2023)
Article
Forestry
Fei Yu, Zhen Li, Junfeng Liang, Houben Zhao
Summary: Extreme weather events can cause canopy disturbance and litter deposition, which have an impact on the community composition of soil CO2-fixing bacteria. Canopy trimming and litterfall inputs facilitate forest restoration, which lasts for 4-5 years after canopy damage. Rainfall and pH are significantly correlated with the communities of soil CO2-fixing bacteria.
Article
Environmental Sciences
Liqing Kou, Tinglin Huang, Haihan Zhang, Gang Wen, Nan Li, Chenxu Wang, Linchao Lu
Summary: Three mix-cultured aerobic denitrifiers were screened from a source water reservoir, showing high denitrification efficiency at low temperature. Nitrogen balance analysis and Biolog results indicated their potential application in improving source water quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Ecology
Pamela Gonzalez-Davila, Markus Schwalbe, Arpit Danewalia, Boushra Dalile, Kristin Verbeke, Sushil K. Mahata, Sahar El Aidy
Summary: The gut epithelium secretes antimicrobial peptides to control the action of gut microbes, and the microbes have evolved antimicrobial resistance mechanisms. This study found that the antimicrobial peptide CST can affect the diversity and composition of the gut microbiota, and it is related to the production of short-chain fatty acids by the microbiota. In addition, the study also found that a certain bacterium can degrade CST, and the gene abundance is higher in patients with Crohn's disease.
Article
Multidisciplinary Sciences
Andrii Repula, Eldho Abraham, Vladyslav Cherpak, Ivan I. Smalyukh
Summary: The orientational order of building blocks is a defining property of liquid crystals, which also exists in various biological systems. However, the physical mechanisms behind the orientational order in biological systems have often been overlooked. This study reveals how biological activity leads to orientational ordering in fluid and gel analogs of soft matter systems, and shows the evolution of these ordered structures during biological-activity-driven, disorder-order transformations. The findings have implications for both technological applications and fundamental science.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Fisheries
Kentaro Imaizumi, Wanlapha Molex, Chakrit Jitnavee, Sataporn Direkbusarakom, Hidehiro Kondo, Ikuo Hirono
Summary: This study analyzed the bacterial and eukaryotic microbiota in shrimp aquaculture ponds. The results showed that the bacterial communities in the water were distributed uniformly and relatively stable, while the eukaryotic plankton in the water changed dynamically. The bacterial compositions in the digestive tracts of shrimp differed between ponds and locations.
Article
Microbiology
Carolina F. Cubillos, Adrian Paredes, Carolina Yanez, Jenifer Palme, Esteban Severino, Drina Vejar, Mario Grageda, Cristina Dorador
FRONTIERS IN MICROBIOLOGY
(2019)
Editorial Material
Environmental Sciences
Alexander Neaman, Patricio Valenzuela, Jaime Tapia-Gatica, Ivan Selles, Alexey A. Novoselov, Elvira A. Dovletyarova, Carolina Yanez, Yurii A. Krutyakov, Jason W. Stuckey
ENVIRONMENTAL RESEARCH
(2020)
Article
Microbiology
Oriana Flores, Julio Retamales, Mauricio Nunez, Marcela Leon, Paula Salinas, Ximena Besoain, Carolina Yanez, Roberto Bastias
Article
Environmental Sciences
Tatiana A. Dubrovina, Artem A. Losev, Mikhail M. Karpukhin, Evgenii L. Vorobeichik, Elvira A. Dovletyarova, Vasyl A. Brykov, Ramilla A. Brykova, Rosanna Ginocchio, Carolina Yanez, Alexander Neaman
Summary: The study found that adding gypsum to copper smelter polluted soils did not alleviate metal phytotoxicity and even increased the soluble metal concentrations in the soil, enhancing metal uptake by plants. The calcium ions in gypsum did not immobilize metals in the soil, leading to increased metal uptake by plants.
Article
Soil Science
A. Neaman, C. Yanez
Summary: This article summarizes a 10-year study of soil phytoremediation in an anthropogenically contaminated area near a copper smelter in central Chile. It highlights the effectiveness of soil amendments in promoting plant growth and establishing a stable ecosystem. The study also points out the limitation of phytoextraction method due to the absence of copper hyperaccumulator plants in Chile.
EURASIAN SOIL SCIENCE
(2021)
Article
Microbiology
Humberto Aponte, Tania Galindo-Castaneda, Carolina Yanez, Martin Hartmann, Claudia Rojas
Summary: This study investigated the effects of forest fires on soil microbial communities in Mediterranean forests of central Chile. It found that forest fires increased microbial catabolic activity and shaped the structure of soil prokaryote communities. These findings are important for evaluating ecosystem recovery and restoration strategies in fire-prone ecosystems.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Geochemistry & Geophysics
Elvira A. Dovletyarova, Olga S. Fareeva, Alexander P. Zhikharev, Ramilla A. Brykova, Evgenii L. Vorobeichik, Marina V. Slukovskaya, Martina Vitkova, Vojtech Ettler, Carolina Yanez, Alexander Neaman
Summary: The potential use of zero-valent iron (ZVI) nanoparticles for the remediation of metal contaminated soils has been widely studied, but doubts remain about their superiority compared to ZVI microparticles or natural iron oxides. This study found that under the experimental setup, ZVI nanoparticles did not prove to be superior in immobilizing metals in contaminated soil.
APPLIED GEOCHEMISTRY
(2022)
Article
Environmental Sciences
Carolina Yanez, Jose Verdejo, Hector Moya, Pamela Donoso, Constanza Rojas, Elvira A. Dovletyarova, Olga A. Shapoval, Yurii A. Krutyakov, Alexander Neaman
Summary: Metal contamination of soil is a serious environmental problem worldwide. Studies attempting to infer metal ecotoxicity from soil microbial responses often yield inconsistent and difficult to interpret data. This research on copper-contaminated soils in Chile found that soil microbial responses were mainly influenced by soil physicochemical properties rather than metal concentrations in the soil. Therefore, microbial response cannot be relied upon as an indicator of metal toxicity in copper-contaminated soils.
Article
Environmental Sciences
Patricia Aguila-Torres, Mauricio Gonzalez, Jonathan E. Maldonado, Richard Miranda, Liqing Zhang, Roxana Gonzalez-Stegmaier, Luis Antonio Rojas, Alexis Gaete
Summary: The presence of microplastics in oceans and coastlines has increased during recent years due to human activities. In this study, bacterial communities attached to microplastics collected from three coastal environments in the South Pacific were analyzed. The study identified different types of microplastics and dominant bacterial phyla, and found differences in bacterial communities on microplastics compared to surrounding seawater.
ENVIRONMENTAL POLLUTION
(2022)
Article
Geochemistry & Geophysics
Alexey A. Novoselov, Mark E. Hodson, Jaime Tapia-Gatica, Elvira A. Dovletyarova, Carolina Yanez, Alexander Neaman
Summary: This study investigated the relationship between trace element concentrations in soils and the lithology of their parent rocks in four river basins in central Chile, revealing significant correlations between different rock types and soil element concentrations.
APPLIED GEOCHEMISTRY
(2022)
Article
Environmental Sciences
Elvira A. Dovletyarova, Alexander P. Zhikharev, Dmitry G. Polyakov, Mikhail M. Karpukhin, Igor S. Buzin, Carolina Yanez, Alexander Neaman
Summary: Ecotoxicological studies on soil metal toxicity often rely on artificially contaminated soils. One difficulty is the presence of multiple metals, making it difficult to distinguish the toxic effects of a particular metal. A site in Russia with monometallic pollution from copper mining was studied, and it was found that high copper content did not affect plant growth in the soil.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Review
Environmental Sciences
Javier Santa-Cruz, Brett Robinson, Yurii A. Krutyakov, Olga A. Shapoval, Patricia Penaloza, Carolina Yanez, Alexander Neaman
Summary: Phytoextraction has been proposed as a low-cost method for remediating contaminated soil, but it may not be feasible if national regulations are based on total metal concentrations. Assessing phytoextraction requires determining the dynamic rate of metal removal from soil, and it has been found that the decrease in soluble metal fraction in soil is often higher than what can be accounted for by plant uptake. Therefore, a stricter approach is needed to ensure accurate evaluation of bioavailable contaminant stripping, and regulations must differentiate between the bioavailable fraction and total metal concentration in soil.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Soil Science
A. Neaman, C. Yanez
Summary: This paper summarizes the findings of the authors' research on copper phytotoxicity in soils contaminated by copper mining industry in the Valparaiso region of central Chile. The study found that among the various elements contaminating the soils, copper was the most important factor limiting plant growth, with no statistically significant effect from other elements. The concentration of copper in the 0.1 M KNO3 extract was identified as the best indicator of phytotoxicity. The total copper content, pH, and dissolved organic carbon concentration were found to be the most important variables in predicting copper concentration and copper ion activity in the extract.
EURASIAN SOIL SCIENCE
(2022)
Article
Soil Science
A. Neaman, C. Yanez
Summary: Soil fauna, especially the earthworm Eisenia fetida L., can be used as a bioindicator organism to assess soil quality. This study demonstrates the potential use of earthworms for ecological assessment of soils contaminated with metals and metalloids, specifically copper and arsenic. The short-term bioassay showed that earthworms avoided soil with increasing copper content, while long-term experiments revealed that arsenic had a greater impact on earthworm reproduction.
EURASIAN SOIL SCIENCE
(2023)
Article
Soil Science
Alexander Neaman, Christian Stange, Sarah Zabel, Tatiana M. Minkina, Carolina Yanez, Elliot Burnham, Siegmar Otto
Summary: Through a study of undergraduate students in introductory soil science course, it was found that theoretical soil knowledge and students' attitude toward soil can be improved through classroom education alone without the need for laboratory or fieldwork components. Future research is needed to develop questionnaires to better assess the impact of hands-on soil knowledge on student learning.
REVISTA BRASILEIRA DE CIENCIA DO SOLO
(2021)