Article
Microbiology
Chun-Zhi Jin, Long Jin, Min-Jiao Liu, Jong-Min Lee, Dong-Jin Park, Chang-Jin Kim
Summary: A polyphasic taxonomic study was conducted on an actinobacterial strain AN110305(T) isolated from soil in South Korea. The strain belongs to a novel genus and species named Solihabitans fulvus, and displays characteristics such as Gram-stain positivity, aerobic growth, non-motility, rod shape, and formation of pale-yellow colonies.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Peter Kuhnert, Isabelle Brodard, Sabine Bock, Andrew Hemphill, Hatice Akarsu, Andreas Engelhardt, Peter Kutzer
Summary: Seven bacterial strains isolated from bovine endocarditis were classified into a new genus within the family Neisseriaceae, distinct from established genera. Whole genome sequence analysis and MALDI-TOF MS spectra analysis were effective methods for identification.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Shuge Wu, Jingjing Wang, Jianing Wang, Xinran Du, Qi Ran, Qi Chen, Duohong Sheng, Yue-zhong Li
Summary: A halophilic and facultatively anaerobic bacterium, YR4-1(T), was isolated from a saline-alkali and sorghum-planting soil sample in Dongying, Shandong Province, China. This bacterium showed growth at a range of temperatures and NaCl concentrations, and possessed genes related to osmotic stress response and diverse metabolic pathways. Phylogenetic analysis revealed its similarity to Aliifodinibius species and its placement within the Balneolaceae family at the genus level.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Zhi-Liang Lin, Shuai Li, Qi-Chuang Wei, Wen-Hui Lian, Chun-Yan Lu, Lu Xu, Li-Nan Huang, Lei Dong, Wen-Jun Li
Summary: Strain SYSU D01096(T) isolated from a sandy soil sample in Gurbantunggut Desert, China, belongs to a novel genus and species within the family Acetobacteraceae, as indicated by phylogenetic and physiological analysis. Its unique characteristics and broad growth conditions set it apart from other known species.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Microbiology
Qing Liu, Lei -Lei Yang, Hong-Can Liu, Guo-Qing Zhang, Yu-Hua Xin
Summary: A novel Gram-stain-negative, rod-shaped, yellow bacterium, Glacieibacterium frigidum gen. nov., sp. nov., was isolated from the Laigu glacier on the Tibetan Plateau, exhibiting unique growth conditions and biological characteristics compared to known bacterial species.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Shan Jiang, Feng-Bai Lian, You-Yang Sun, Xiao-Kui Zhang, Zong- Jun Du
Summary: The bacterial strain F7430(T) isolated from coastal sediment in Weihai, PR China, was identified as a novel species within the family Halieaceae, named Sediminihaliea albiluteola gen. nov., sp. nov. The strain exhibited unique physiological and genetic characteristics, distinguishing it as a new species within this family.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Jaewoo Yoon
Summary: A novel bacterium, named T. halocola, was isolated from coastal seawater in Korea. It was characterized as a Gram-staining-negative, strictly aerobic, dark beige-colored, rod-shaped bacterium. Phylogenetic analysis showed that T. halocola belonged to the family Roseobacteraceae and had the closest sequence similarity to A. marinus NAP41.
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2023)
Article
Microbiology
Chunling Wang, Yingying Lv, Anzhang Li, Qing Yao, Honghui Zhu
Summary: A lemon-chiffon strain named Parachryseolinea silvisoli sp. nov. was isolated from a soil sample collected from Qinghai Virgin Forests, Qinghai Province, PR China. This strain belongs to the family Fulvivirgaceae and represents a new species in a new genus. Additionally, the reclassification of Chryseolinea flava as Pseudochryseolinea flava gen. nov., comb. nov. is proposed.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Soon Dong Lee, Sung-Min Kim, Hong Lim Yang, Yeong-Sik Byeon, In Seop Kim
Summary: A novel Gram stain-negative bacterial strain, named SY4-7(T), was isolated from the rhizosphere mudflat of a halophyte in South Korea. Through 16S rRNA gene sequencing and chemotaxonomic analysis, it was identified as a new species of a new genus in the family Stappiaceae, named Hongsoonwoonella zoysiae sp. nov.
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Microbiology
Ting -Ting Wei, Xi-Bei Fan, Zhe- Xue Quan
Summary: A Gram- stain-negative bacterium named 960558T was isolated from sediment in the Mariana Trench. It has rod-shaped or irregular cells with a size of approximately 0.5-0.9x2.0-3.8 μm. The bacterium grows at temperatures between 4-37°C, pH 6-7, and in the presence of 1-5% NaCl. Phylogenetic analysis shows that it belongs to a novel genus and species within the family Rhodobacteraceae.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Microbiology
Chuang Han, Mengqi Jiang, Qiqi Shan, Ting Liu, Han Wang, Lifeng Guo, Wensheng Xiang, Junwei Zhao, Xiangjing Wang
Summary: A novel Gram-stain-positive, aerobic actinobacterium, designated Nucisporomicrobium flavum, was isolated from saline-alkali soil collected from Daqing City, Heilongjiang Province, PR China. Genetic and phenotypic analysis showed that this strain is distinct from known genera within the family Micromonosporaceae.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Ling-Zi Yin, Ze-Tao Liu, Jia-Ling Li, Pan-Deng Wang, Lei Dong, Li Duan, Xiao-Qing Luo, Bao-Zhu Fang, Wen-Jun Li
Summary: A novel actinobacterium strain SYSU M44304T was isolated from freshwater samples in the Pearl River Estuary. It showed unique biochemical and physiological characteristics, leading to its classification as a new genus and species in the family Dermatophilaceae, named Agilicoccus flavus gen. nov., sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Andree F. Maheux, Dominique K. Boudreau, Jehane Y. Abed, Eve Berube, Stephanie Brodeur, Kathryn A. Bernard, Ameena Hashimi, Eloise Ducrey, Emilie F. Guay, Frederic Raymond, Jacques Corbeil, Marc-Christian Domingo, Paul H. Roy, Maurice Boissinot, Elitza Tocheva, Rabeea F. Omar
Summary: A rod-shaped, motile anaerobic bacterium, designated CCRI-22567(T), was isolated from a vaginal sample of a woman diagnosed with bacterial vaginosis. Based on phylogenetic analysis, chemotaxonomy, and other phenotypic properties, strain CCRI-22567(T) represents a new genus and species within the family Peptostreptococcaceae, named Criibacterium bergeronii gen. nov., sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Li-Sha Tian, Gang-Qiang Jiang, Rui Li, Ping Ni, Chuan-En Li, Hong-Yan Zhang, Juan Wang, Xiao-Ping Zhang, Yun Wang, Shu-Kun Tang
Summary: The novel mycelium-forming actinomycete strain YIM-S01255(T) was isolated from a salt lake, showing optimal growth conditions in the presence of moderate salt concentration, neutral to slightly alkaline pH, and at a temperature of 37 degrees C. Phylogenetic analysis revealed that it forms a distinct clade within the family Pseudonocardiaceae, with high genetic divergence from other members. Its unique characteristics led to the proposal of a new genus and species, Qaidamihabitans albus gen. nov., sp. nov.
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Microbiology
Senlie Octaviana, Stefan Lorenczyk, Frederike Ackert, Linda Fenske, Joachim Wink
Summary: Four novel strains of bacteria were isolated and identified as four new species belonging to two new genera in the family Cytophagaceae. These strains exhibited distinct physiological characteristics and genomic differences.
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Gonzalo Neira, Eva Vergara, Diego Cortez, David S. Holmes
Summary: This study predicts genes and mechanisms involved in reactive oxygen species (ROS) mitigation in acidophilic archaea based on analysis of over 200 genomes. Acidophilic archaea often face multiple stress factors, and this research explores the phylogenomic distribution of these genes, differences with non-acidophilic archaea and acidophilic bacteria, and potential horizontal gene transfer events through comparative genomic analysis.
Article
Microbiology
Melissa K. Corbett, Liam Anstiss, April Gifford, Ross M. Graham, Elizabeth L. J. Watkin
Summary: This study found that Acidihalobacter aeolianus exhibits different adaptive properties in response to osmotic stress and toxic ions. High concentrations of chloride ions resulted in accumulation of ectoine, while the response to osmotic stress was mainly influenced by chloride toxicity.
Article
Microbiology
Katelyn Boase, Carolina Gonzalez, Eva Vergara, Gonzalo Neira, David Holmes, Elizabeth Watkin
Summary: Acidihalobacter is a genus of acidophilic, gram-negative bacteria that can oxidize pyrite minerals in the presence of elevated chloride ions. This study aims to expand our knowledge of the genetic repertoire of Acidihalobacter that allows it to cope with acidic stress. Potential acid tolerance mechanisms, including multiple potassium transporters, chloride/proton antiporters, and various enzyme systems, were found in Acidihalobacter genomes.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Diego Cortez, Gonzalo Neira, Carolina Gonzalez, Eva Vergara, David S. Holmes
Summary: The genome streamlining theory suggests that reduction of microbial genome size optimizes energy utilization in stressful environments. In this study, a comparative genomics investigation of acidophilic bacteria was performed to examine the correlation between genome size reduction and decreasing pH. The results indicate that genome streamlining in acidophilic bacteria is supported by gene loss and reduced gene sizes, independent of other genome size constraints.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Carolina Gonzalez-Rosales, Eva Vergara, Mark Dopson, Jorge H. Valdes, David S. Holmes
Summary: Extreme acidophiles, including Acidithiobacillia, thrive in environments rich in protons and dissolved heavy metals. Acidophilic genera evolved from an ancestral neutrophile and have specific genes and mechanisms for acid resistance, including preventing proton influx and neutralizing protons. The genomic structure of Acidithiobacillia has been shaped by the gain of certain genes involved in membrane stabilization and generation of an internal positive membrane potential. Acid resistance mechanisms were inherited vertically, but other mechanisms were obtained through horizontal gene transfer events.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Jose Bitencourt, Larissa Scholte, Renato Oliveira, Daniel Morais, Gisele Nunes, Ivan Nancucheo, Rafael Valadares, David S. Holmes, D. Barrie Johnson, Ronnie Alves, Guilherme Oliveira
Summary: We reported the draft genome sequence of a facultatively anaerobic, acidophilic bacterium strain Y002, which catalyzes the oxidation of iron and sulfur. Analysis of its genome revealed its ability to grow in extremely acidic geothermal environments.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2022)
Article
Microbiology
Benjamin Tuck, Elizabeth Watkin, Anthony Somers, Maria Forsyth, Laura L. Machuca
Summary: Biofilm formation is a global concern, and this research reveals that reducing the concentration of environmentally sustainable biocides and incorporating an eDNA degradation stage can significantly reduce the viability of mature biofilms, leading to biofilm dispersal and antimicrobial enhancement.
Article
Microbiology
Benjamin Tuck, Silvia J. Salgar-Chaparro, Elizabeth Watkin, Anthony Somers, Maria Forsyth, Laura L. Machuca
Summary: Multispecies biofilms in marine environment pose a threat to marine-based industries, and the efficacy of biocides used against these biofilms is compromised due to microbial chemical tolerance. However, the understanding of species and extracellular polymeric substances (EPS) composition in marine biofilms is limited, hindering the development of effective and environmentally friendly biocides. This study investigates the composition of EPS and population dynamics in marine biofilms developed on steel. Results show that extracellular DNA (eDNA) is a critical structural component of the biofilms, and the biofilms exhibit stable and well-defined communities with distinct EPS profiles.
Expression of Concern
Multidisciplinary Sciences
D. E. Almonacid
Review
Biochemistry & Molecular Biology
Josefa Nunez-Belmar, Mauricio Morales-Olavarria, Emiliano Vicencio, Rolando Vernal, Juan P. Cardenas, Cristian Cortez
Summary: This review discusses the use of different -omics technologies and techniques in studying the pathogenic potential of P. gingivalis and its interaction with the host.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Microbiology
D. Barrie Johnson, David S. Holmes, Eva Vergara, Roseanne Holanda, Eva Pakostova
Summary: Ten acidophilic bacteria strains, which form a monophyletic clade within Firmicutes, were isolated from different environments. Comparison of their complete genomes revealed two proposed genera (Sulfoacidibacillus and Ferroacidibacillus) and three proposed species (Sulfoacidibacillus ferrooxidans, Sulfoacidibacillus thermotolerans, and Ferroacidibacillus organovorans). These bacteria strains share physiological traits such as iron oxidation and reduction, as well as being obligately heterotrophic. Additionally, they exhibit different degrees of acid tolerance and temperature preferences. The importance of these findings is rated as 8 out of 10.
RESEARCH IN MICROBIOLOGY
(2023)
Review
Microbiology
Mark Dopson, Carolina Gonzalez-Rosales, David S. S. Holmes, Nadia Mykytczuk
Summary: This article summarizes the characteristics and importance of acidophilic psychrophiles in low temperature acidic environments, as well as their roles in biogeochemical cycling on Earth and biotechnological applications. It also highlights the synergistic and potentially antagonistic adaptations to low pH and temperature in these microorganisms.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Arya van Alin, Melissa K. Corbett, Homayoun Fathollahzadeh, M. Christian Tjiam, William D. A. Rickard, Xiao Sun, Andrew Putnis, Jacques Eksteen, Anna H. Kaksonen, Elizabeth Watkin
Summary: Microbial attachment and biofilm formation of Klebsiella aerogenes on monazite and xenotime minerals were investigated. The biofilm development process was observed and divided into three distinct stages. Higher coverage of biofilm was found on the high-grade monazite ore due to its rougher surface. Also, no selective attachment or colonization towards specific mineralogy or chemical composition was detected.
MICROBIAL BIOTECHNOLOGY
(2023)
Article
Microbiology
Arya Van Alin, Melissa K. Corbett, Homayoun Fathollahzadeh, M. Christian Tjiam, Andrew Putnis, Jacques Eksteen, Anna H. Kaksonen, Elizabeth Watkin
Summary: The adsorption behavior of micro-organisms during the initial attachment stage affects biofilm formation. Factors such as available attachment area and surface properties impact microbial attachment. This study investigated the initial attachment behavior of Klebsiella aerogenes on monazite and explored the role of extracellular DNA (eDNA). The ratio of planktonic and sessile subpopulations (P:S ratio), eDNA production, surface properties, particle size, available attachment area, and initial inoculation size were tested. The results showed that attachment occurred preferentially on larger particles, and decreasing the inoculation size or increasing the available area further promoted attachment. The presence of eDNA hindered bacterial attachment by creating repulsive interaction with bacteria.
Review
Materials Science, Multidisciplinary
B. Tuck, E. Watkin, A. Somers, L. L. Machuca
Summary: The formation of multi-species biofilms on marine infrastructure leads to significant economic losses and lacks effective and environmentally friendly treatment methods. Incomplete understanding of natural biofilm development remains a major limitation for biofilm control measures.
NPJ MATERIALS DEGRADATION
(2022)
