Article
Biochemistry & Molecular Biology
Guan-Bao Tao, Bi-Wei Tan, Zheng-Jun Li
Summary: The moderately halophilic bacterium Salinivibrio sp. TGB10 has shown promising potential for producing PHBV with various polymer compositions, demonstrating favorable tolerance to propionate and the ability to synthesize PHBV when provided with different carbon sources.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Electrochemistry
Erin M. Gaffney, Ashwini Dantanarayana, Olja Simoska, Shelley D. Minteer
Summary: Microbial electrochemical technologies have attracted interest in the electrochemical community due to their potential applications in wastewater treatment, biosensing, biosynthesis, and bioenergy. Recent studies have focused on elucidating the electron transfer strategies of electroactive microorganisms, particularly extremophilic bacteria for their suitability in microbial electrochemical technologies. A recent study isolated a strain of Salinivibrio sp. EAGSL from the Great Salt Lake, Utah, for its anodic respiration capabilities. Electroanalytical techniques and genomic methods were employed to investigate the electroactive mechanisms and other metabolisms of Salinivibrio sp. EAGSL.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Genetics & Heredity
Clifton P. Bueno de Mesquita, Jinglie Zhou, Susanna Theroux, Susannah G. Tringe
Summary: Aerobic bacteria that degrade methylphosphonates and produce methane have been found to play a crucial role in marine carbon and phosphorus cycles. In this study, two newly discovered species of the Marivita genus were identified from metagenomes of former industrial salterns with high salinity levels. These bacteria were found to be significantly more abundant in the salterns compared to nearby reference and restored wetlands.
Article
Microbiology
Ana Duran-Viseras, Cristina Sanchez-Porro, Antonio Ventosa
Summary: Metagenomic studies in hypersaline soils from South-west Spain revealed a high proportion of genomic sequences not related to previously cultivated taxa, potentially haloarchaea. Culturomics approach was used to isolate four new haloarchaeal strains related to Halomicroarcula genus, which were determined to be three new species. Comparative genomic analysis showed these haloarchaea have unique osmoregulatory mechanisms for adaptive growth in high salt environments.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Chunqi Jiang, Sayaka Mino, Tomoo Sawabe
Summary: The Halioticoli clade of Vibrionaceae is ecologically and evolutionarily significant, with genomic sizes and gene family analyses revealing the characteristics and evolutionary processes of these species.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Polymer Science
Monic Andrew, Gurunathan Jayaraman
Summary: The study investigates the structure and biocompatibility of EPS produced by Virgibacillus dokdonensis VITP14, showing its porous web-like structure, anionic nature, and potential application in synthesizing biomaterials.
Review
Microbiology
Thomas P. Thompson, Brendan F. Gilmore
Summary: Microbial natural products in extreme environments have the potential to produce novel antibiotics, and advanced techniques in isolation and genomic mining have improved the efficiency of antibiotic discovery. This review provides an overview of antimicrobial compounds produced by halophiles from all three domains of life, highlighting the importance of understudied halophiles. The review also discusses upcoming technologies, such as enhanced isolation and metagenomic screening, as tools for overcoming barriers to antimicrobial drug discovery.
CRITICAL REVIEWS IN MICROBIOLOGY
(2023)
Article
Microbiology
Ya-Lin Yin, Fang-Ling Li, Lei Wang
Summary: A bacterium named G5-11(T) was isolated from saline soil in Yingkou, Liaoning, China. It is a Gram-negative, moderately halotolerant, facultatively aerobic, and motile bacterium. Phenotypic, chemotaxonomic, and phylogenetic analyses showed that strain G5-11(T) represents a novel species of the genus Halomonas, named Halomonas salinarum.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Surendraraj Alagarsamy, Sabeena Farvin K. Habeebullah, Faiza Al-Yamani
Summary: Sabkhas in Kuwait are unique hypersaline marine environments with high bacterial diversity. These bacteria show high salt tolerance, antimicrobial activity, and potential for producing bioactive compounds. Their extreme growth conditions make them promising candidates for future bioprospecting studies.
INTERNATIONAL MICROBIOLOGY
(2021)
Article
Microbiology
Lea Nosalova, Maria Piknova, Katarina Bonova, Peter Pristas
Summary: The sulfur cycle plays a significant role in the evolution of life, with some microorganisms able to survive in extreme environments by oxidizing reduced sulfur compounds for energy. In a former salt mine in Solivar, Slovakia, a high diversity of cultivable bacteria, including both heterotrophic and autotrophic sulfur oxidizers, was observed. These findings demonstrate the presence of novel and diverse extremophilic sulfur-oxidizing bacteria in the spatially isolated hypersaline deep subsurface habitat of Solivar.
Article
Chemistry, Applied
Jing Yu, Kuan Lu, Jiwei Zi, Xihong Yang, Zuoxing Zheng, Wancui Xie
Summary: This study investigated the impact of using halophilic bacteria as starters on the sensory and flavor characteristics of rapidly fermented shrimp paste. The results showed that the starter-inoculated samples had higher texture, appearance, and overall quality scores, with an increase in volatile compounds contributing to a more intense flavor. While some flavor substances were lower in the starter-inoculated samples compared to the traditional sample, the use of starters significantly reduced fermentation time and partially mimicked the traditional flavor profile.
Article
Environmental Sciences
Houda Baati, Moez Bahloul, Ridha Amdouni, Chafai Azri
Summary: This study focused on the behavior of moderately halophilic Bacteria towards selected heavy metals in Sfax solar saltern brines, showing significant contamination due to industrial particulate fallouts. The multivariate statistical analysis revealed factors influencing Bacteria growth, with different effects of pH, temperature and NaCl concentrations on growth rate. The bacterial strains were highly resistant to Pb and Cd, with varying response to Zn and Cu, indicating Cu as the most toxic among the four heavy metals.
GEOMICROBIOLOGY JOURNAL
(2022)
Article
Gastroenterology & Hepatology
Seung Woo Ahn, Se Hee Lee, Hong-Seok Son, Seong Woon Roh, Yoon-E Choi
Summary: A novel species of Lentibacillus, strain CBA3610, was isolated from a human fecal sample. The complete genome sequence revealed the presence of antibiotic resistance genes and pathogenic genes, making it a potential candidate species in the genus Lentibacillus. Further genomic analyses may help understand the relationship between halophilic bacteria and human gut microbiota.
Article
Ecology
Osiel Silva Goncalves, Mateus Ferreira Santana
Summary: This study aimed to isolate and characterize slow-growing bacteria from Brazilian Cerrado soil. A total of 92 isolates were obtained, mostly consisting of slow-growing bacteria, with the ability to thrive in low-water conditions and promote plant growth. 16S rRNA sequencing analysis revealed that these slow-growing strains were genetically similar to known bacterial species but also belonged to a novel group of species. Genomic analysis showed their potential in biogeochemical cycles, carbohydrate metabolism, protein encoding for plant growth promotion, and biosynthetic potential for secondary metabolites. Overall, our findings reveal the untapped potential of slow-growing bacteria in tropical savanna soils.
Article
Microbiology
Qiulong Yan, Siyi Zhang, Shenghui Li, Guangyang Wang, Aiqin Zhang, Taiyang Jin, Yue Zhang, Qingbo Lv, Manchun Xiao, Yuanyuan Sun, Xiang Li, Song Cui, Rui Li, Xiaochi Ma, Chao Wang, Xiangge Tian, Xiaohui Duan, Yi Xin, Xianhai Mao, Yufang Ma
Summary: This study isolated and genomically characterized bacterial strains from human bile, revealing the presence of unique functional genes in bile strains compared to gut isolates. The bile isolates also harbored various antibiotic resistance genes and demonstrated capabilities for bile salt deconjugation or biotransformation.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Ana Duran-Viseras, Adrian-Stefan Andrei, Blanca Vera-Gargallo, Rohit Ghai, Cristina Sanchez-Porro, Antonio Ventosa
Summary: The study isolated two new species of haloarchaea using a culturomics-based approach in hypersaline environments, revealing their unique lifestyles and worldwide distribution. This research is significant for advancing our understanding of microbial diversity and ecological functions.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Microbiology
Ninfa Ramirez-Duran, Rafael R. de la Haba, Blanca Vera-Gargallo, Cristina Sanchez-Porro, Scarlett Alonso-Carmona, Horacio Sandoval-Trujillo, Antonio Ventosa
Summary: In this study, a comparative genomic analysis of the actinobacterial genus Saccharomonospora was conducted, revealing a high degree of novelty and diversity of biosynthetic gene clusters (BGCs) in members of this genus. The study supports a recent speciation event between Saccharomonospora halophila and Saccharomonospora iraqiensis.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Can Akpolat, Ana Beatriz Fernandez, Pinar Caglayan, Baris Calli, Meral Birbir, Antonio Ventosa
Summary: The study analyzed 30 brine samples from various salt lakes and salterns in Turkey, finding that archaea dominated these habitats while bacteria were present in lower amounts. Various archaeal and bacterial genera were detected, with Haloquadratum and Halorhabdus being the most abundant genera found in all sampling sites.
Article
Microbiology
Ana Duran-Viseras, Cristina Sanchez-Porro, Antonio Ventosa
Summary: Metagenomic studies in hypersaline soils from South-west Spain revealed a high proportion of genomic sequences not related to previously cultivated taxa, potentially haloarchaea. Culturomics approach was used to isolate four new haloarchaeal strains related to Halomicroarcula genus, which were determined to be three new species. Comparative genomic analysis showed these haloarchaea have unique osmoregulatory mechanisms for adaptive growth in high salt environments.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Rafael R. de la Haba, Hiroaki Minegishi, Masahiro Kamekura, Yasuhiro Shimane, Antonio Ventosa
Summary: This study clarified the controversy related to the genera Natrinema and Haloterrigena by conducting a comparative genomic analysis of the type strains. The results indicated that certain species should be transferred to the genus Natrinema, while others should remain in the genus Haloterrigena. Synteny analysis and phenotypic features supported these proposals.
FRONTIERS IN MICROBIOLOGY
(2021)
Editorial Material
Microbiology
Rafael R. de la Haba, Andre Antunes, Brian P. Hedlund
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Cristina Galisteo, Rafael R. de la Haba, Cristina Sanchez-Porro, Antonio Ventosa
Summary: Hypersaline soils have been neglected until recently, but their halophilic prokaryotic population is more diverse than aquatic systems. The family Balneolaceae is abundant in these soils, but few members have been isolated and characterized. A novel strain 1BSP15-2V2(T) related to the genus Aliifodinibius was isolated from hypersaline soils in Southwest Spain. Comparative genomic analyses revealed that Aliifodinibius and Fodinibius belong to a single genus, and propose the reclassification of Aliifodinibius species into Fodinibius. The strain is described as Fodinibius salsisoli sp. nov., and genomic analysis suggests the presence of closely related uncultured representatives in these environments. The metabolism of Fodinibius includes biotin biosynthesis, which may have implications in providing this vitamin for other organisms.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
Giuliano Gattoni, Rafael R. de la Haba, Jesus Martin, Fernando Reyes, Cristina Sanchez-Porro, Antonia Feola, Candida Zuchegna, Shaday Guerrero-Flores, Mario Varcamonti, Ezio Ricca, Nelly Selem-Mojica, Antonio Ventosa, Paulina Corral
Summary: The low-abundance microbiota in the marine environment has the potential to produce new bioactive molecules with pharmaceutical applications. This study isolated a new marine bacterium, Leeuwenhoekiella parthenopeia sp. nov. Mr9(T), from the rare biosphere using seasonal and diel sampling approaches. The bacterium showed potential for synthesizing novel bioactive compounds, and its lipidome exhibited activity against prostatic and brain tumor cells. The study emphasizes the importance of ecological sampling strategies and the use of bacterial membrane constituents in developing novel therapeutics.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
Alicia Garcia-Roldan, Ana Duran-Viseras, Rafael R. de la Haba, Paulina Corral, Cristina Sanchez-Porro, Antonio Ventosa
Summary: The genus Natronomonas is classified within the family Haloarculaceae and includes six species of extremely halophilic and neutrophilic archaea. These species have been isolated from various saline environments and salt mines. A genomic study was conducted to determine the phylogenetic structure of Natronomonas and its taxonomic status. The results showed that the species of Natronomonas form a coherent cluster at the genus level. Additionally, a new species of Natronomonas, named Natronomonas aquatica sp. nov., was characterized and found to have a versatile nitrogen metabolism. Metagenomic analysis also revealed the widespread distribution of Natronomonas species in saline lakes, salterns, and saline soils.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
Cristina Galisteo, Rafael R. de la Haba, Cristina Sanchez-Porro, Antonio Ventosa
Summary: Hypersaline soils are a previously overlooked source of prokaryotic diversity. This study discovered two new taxa, Aquibacillus salsiterrae sp. nov. and Terrihalobacillus insolitus gen. nov., sp. nov., isolated from the heavy metal contaminated soils of the Odiel Saltmarshers Natural Area. Comparative genomic analyses revealed dissimilitude in metabolic traits and the presence of salt-out mechanisms in the new species. These findings contribute to a better understanding of the rare biosphere in hypersaline environments.
FRONTIERS IN MICROBIOLOGY
(2023)
Editorial Material
Microbiology
Cristina Sanchez-Porro
Article
Microbiology
Alicia Garcia-Roldan, Rafael R. de la Haba, Blanca Vera-Gargallo, Cristina Sanchez-Porro, Antonio Ventosa
Summary: Metagenomic sequences of prokaryotic microbiota from brine of a crystallizer pond in a saltern in Isla Cristina, southwest Spain, were obtained using Illumina. Haloarchaea and Salinibacter were the most abundant prokaryotes.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2023)