Article
Microbiology
Ze-Xi Jiao, Xue-Gong Li, Huan-Huan Zhang, Jun Xu, Shi-Jie Bai, Jie Dai, Jin Lin, Wei-Jia Zhang, Xiao- Qing Qi, Long- Fei Wu
Summary: A novel moderately thermophilic bacterium, strain 143-21T, was isolated from a deep-sea hydrothermal chimney sample. It belongs to the genus Crassaminicella and shows high similarity to Crassaminicella thermophila SY095T and Crassaminicella profunda Ra1766HT. The strain has a wide temperature, pH, and salinity tolerance and can utilize various carbon sources and amino acids for growth, producing acetate, H2, and CO2 as fermentation products. Based on its phylogenetic analysis and physiological characteristics, it is proposed as a new species named Crassaminicella indica sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Microbiology
Xue-Gong Li, Jin Lin, Shi-Jie Bai, Jie Dai, Ze-Xi Jiao, Hong-Zhi Tang, Xiao-Qing Qi, Wei-Jia Zhang, Min Liu, Jian-Sheng Xu, Long-Fei Wu
Summary: The novel bacterium strain SY095(T) is a moderately thermophilic, anaerobic, heterotrophic bacterium isolated from a hydrothermal vent chimney in the Southwest Indian Ridge. It can grow at high temperatures, low acidity, and high salinity, utilizing various substrates for fermentation and producing specific metabolites. Based on its 16S rRNA gene sequences, it may represent a new species within the genus Crassaminicella.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Environmental Sciences
J. Marticorena, M. Matabos, E. Ramirez-Llodra, C. Cathalot, A. Laes-Huon, R. Leroux, S. Hourdez, J. -P. Donval, J. Sarrazin
Summary: This study implemented a novel experimental approach to assess the recovery potential of vent communities along the slow-spreading northern Mid-Atlantic Ridge. Within 2 years after inducing a small-scale disturbance, most taxonomic richness had recovered, but there was only partial recovery of faunal densities and a major change in faunal composition. The results suggest a potential role of mobile predators in early-colonisation stages.
MARINE ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Environmental
Jingye Yao, Mengru Zhang, Fei Han, Zhe Liu, Yufei Han, Qian Li, Weizhi Zhou
Summary: This study discovered a bacterium, Pseudomonas sp. 4-2, which is naturally adapted to high temperature and high salinity environments and has good adsorption efficiency for Pb2+. The research also revealed the adsorption process and molecular structure characteristics of this bacterium.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Geology
Baoju Yang, Jihua Liu, Chuanshun Li, Aimei Zhu, Hongmin Wang, Jingjing Cui, Hui Zhang, Qiannan Hu, Xuefa Shi
Summary: This study presents mineralogical and geochemical analyses of unconsolidated submarine surface sediments collected from different hydrothermal fields along the southern Mid-Atlantic Ridge. The results show that the formation of mineral deposits in these fields varies with temperature. The geochemical data indicate that hydrothermal materials are the main source of non-biological components in the sediments. The hydrothermal fields in question may have undergone phase separation, resulting in the formation of different types of sulfide-rich sediments. In the northern segment, sediment particles from plume fall-out are the primary source, while in the southern segment, hydrothermal materials are mainly derived from collapsed chimneys and debris precipitated from hydrothermal fluids.
ORE GEOLOGY REVIEWS
(2022)
Article
Geochemistry & Geophysics
Dennis Sanchez-Mora, John Jamieson, Mathilde Cannat, Javier Escartin, Thibaut Barreyre
Summary: In this study, the Lucky Strike vent field on the Mid-Atlantic Ridge is investigated using bulk rock geochemistry and in situ sulfur isotope analysis. The results show that the hydrothermal deposits in the vent field contain elevated concentrations of elements enriched in mid-ocean ridge basalt. The sulfur isotope compositions of hydrothermal marcasite and chalcopyrite are similar to other sediment-free basalt-hosted seafloor hydrothermal sites, but there are differences in sulfur isotopes between different vent sites. Furthermore, the geochemistry of the hydrothermal deposits at Lucky Strike can be distinguished from other types of deposits using the Ba/Co ratio.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Agricultural Engineering
Zhijie Xie, Xianghui Meng, Hongxia Ding, Qin Cao, Yichao Chen, Xiaofeng Liu, Dong Li
Summary: The addition of rumen cellulolytic bacteria and activated carbon can enhance methane production during thermophilic digestion of cornstalk, with the best performance achieved when both are present simultaneously. This improvement is attributed to the synergistic effect of the enriched bacteria working together.
BIORESOURCE TECHNOLOGY
(2021)
Article
Microbiology
Mustafa Yuecel, Serhat Sevgen, Nadine Le Bris
Summary: The study reveals the presence of different sizes of iron particles in the Mid-Atlantic Ridge hydrothermal system, where the nanoparticulate/colloidal phase changes with sample temperature and the distribution of iron particles of different sizes varies in the plume. The results support previous observations of dissolved iron in MAR vent plumes, suggesting that this recalcitrant iron pool contributes to maintaining high hydrothermal iron fluxes to the deep ocean. Unexpected findings in sample collection could have implications for further research.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Geochemistry & Geophysics
Dennis Sanchez-Mora, John Jamieson, Mathilde Cannat, Javier Escartin, Thibaut Barreyre
Summary: In this study, we determined the age (>6,600 years) and mass (about 1.3 Mt) of metal-rich deposits formed at the Lucky Strike cluster of high-temperature seafloor hot springs located on the Mid-Atlantic Ridge. We also calculated the average rate of formation (194 t/yr) of these deposits. Our findings show that the Lucky Strike vent field is younger than other vent fields along the Mid-Atlantic Ridge, but has similar formation rates, which are high compared to other geological processes producing metal-rich deposits.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Environmental Sciences
Jozee Sarrazin, Cecile Cathalot, Agathe Laes, Julien Marticorena, Loic N. Michel, Marjolaine Matabos
Summary: This study describes the ecology of new types of assemblage dominated by gastropods found in several active sulfide edifices along the northern Mid-Atlantic Ridge. The composition, abundance, diversity, and trophic niche of these assemblages were assessed and compared, revealing different characteristics in different vent fields. These gastropods may play an important ecological role in the MAR vent communities.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Microbiology
Chris Maltman, Steven B. Kuzyk, John A. Kyndt, George Lengyel, Vladimir Yurkov
Summary: A Gram-stain-negative, rod-shaped bacterium, ER-Te-42B-LightT, was isolated from the tissue of a tube worm collected near a deep-sea hydrothermal vent. This bacterium exhibited the ability to perform anaerobic respiration using various electron acceptors and showed genetic divergence from its closest phylogenetic neighbors at the species level. It was identified as a new species of the genus Shewanella, named Shewanella metallivivens.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Review
Environmental Sciences
Teresa Radziejewska, Magdalena Blazewicz, Maria Wlodarska-Kowalczuk, Piotr Jozwiak, Krzysztof Pabis, Jan Marcin Weslawski
Summary: In February 2018, the Government of Poland and the International Seabed Authority signed a 15-year contract for exploration of polymetallic sulfide deposits. The exploration will focus on benthic communities in the contract area, with special attention given to potential knowledge gaps and the unique Lost City hydrothermal field. Significant efforts will be needed to address these gaps during exploration surveys.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Srishti Kashyap, Masroque Musa, Kaylee A. Neat, Deborah A. Leopo, James F. Holden
Summary: The deep-sea thermophilic bacterium Ax17(T) was isolated from hydrothermal fluid at Axial Seamount, exhibiting obligate anaerobic and autotrophic growth characteristics. It showed unique phenotypic and genotypic features, suggesting it represents a novel genus and species named Desulfovulcanus ferrireducens.
Article
Microbiology
Akos Toth, Rozsa Mate, Jozsef Kutasi, Ildiko Bata-Vidacs, Erika Toth, Andras Tancsics, Gabor Kovacs, Istvan Nagy, Jozsef Kukolya
Summary: The novel gram-negative bacterial strain Ka43(T) was isolated from agricultural soil and classified as a new species in the genus Cellvibrio, named Cellvibrio polysaccharolyticus sp. nov., based on its unique phenotypic and genotypic characteristics.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Geochemistry & Geophysics
Alessio Sanfilippo, Vincent J. M. Salters, Sergey Y. Sokolov, Alexander A. Peyve, Andreas Stracke
Summary: The upper mantle is a mixture of refractory and recycled crustal domains, with the recycled portions dominating the composition of surface basalts. Hf isotope ratios may provide hints for melting of refractory source materials in basalts, allowing the identification of depleted mantle materials. Basalts from the Arctic Atlantic show high Hf isotope ratios, suggesting a highly depleted asthenospheric mantle source beneath this region.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Chemistry, Physical
Nataliya Chistyakova, Angelina Antonova, Ivan Elizarov, Pavel Fabritchnyi, Mikhail Afanasov, Mikhail Korolenko, Maria Gracheva, Diana Pchelina, Ilya Sergueev, Olaf Leupold, Rene Steinbruegge, Sergey Gavrilov, Ilya Kublanov, Vyacheslav Rusakov
Summary: The redox transformations of mixed-valence antimony oxide were studied using Mossbauer spectroscopy, nuclear forward scattering, and Raman spectroscopy, revealing a minor decrease in antimony(V) content with a concomitant increase in antimony(III) under the culture of a hyperthermophilic archaeon of the genus Pyrobaculum. The sensitivities of the methods for quantitatively assessing the Sb(III/V) ratio have been considered.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Biotechnology & Applied Microbiology
Alexander G. Elcheninov, Olga A. Podosokorskaya, Olga L. Kovaleva, Andrei A. Novikov, Stepan Toshchakov, Elizaveta A. Bonch-Osmolovskaya, Ilya Kublanov
Summary: A novel aerobic moderately thermophilic bacterium, strain 2918(T), was isolated from a terrestrial hot spring in Kamchatka, Russian Federation. It grows at temperatures between 25-60°C and pH 5.0-8.0, representing a distinct lineage within Planctomycetes named Thermogemmata gen. nov. Strain 2918(T) is the first species of this new genus, named Thermogemmata fonticola sp. nov.
SYSTEMATIC AND APPLIED MICROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Yury A. Denisenko, Olga G. Korotkova, Ivan N. Zorov, Alexandra M. Rozhkova, Margarita Semenova, Alexandr G. Elcheninov, Ilya Kublanov, Arkady P. Sinitsyn
Summary: Heterologous endo-xanthanase (EX) was obtained from Thermogutta terrifontis strain using a fungal expression system with a high molecular weight and activity towards various polysaccharides. The enzyme showed optimal activity at 55 degrees C and pH 4.0, with 90% activity retained in the temperature range of 50-60 degrees C and pH range of 3-5.
BIOCHEMISTRY-MOSCOW
(2021)
Article
Microbiology
Dimitry Y. Sorokin, Tatjana Khijniak, Alicia P. Zakharycheva, Alexander G. Elcheninov, Richard L. Hahnke, Olga Boueva, Elena Ariskina, Boyke Bunk, Ilya Kublanov, Lyudmila Evtushenko
Summary: A new haloalkaliphilic hydrolytic actinobacterium, Natronoglycomyces albus gen. nov., sp. nov., with high alkalinity and salt tolerance, was discovered and classified within the family Glycomycetaceae. This strain contains multiple glycosidase-encoding genes and has a cell wall characteristic of peptidoglycan type A1 gamma'. The genome analysis revealed a chromosome of 3.94 Mbp encoding 3285 proteins, leading to the proposal of a new genus and species.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
A. I. Karaseva, A. G. Elcheninov, A. A. Perevalova, K. S. Zayulina, T. V. Kochetkova, I. V. Kublanov
Summary: This study reported the isolation of a pure culture of a strictly anaerobic archaeon, strain 3639Fd, capable of growth on various lipids at high temperature, and identified it as Fervidicoccus fontis, the first crenarchaeon able to obtain energy by hydrolysis of lipid substrates.
Article
Biotechnology & Applied Microbiology
Kseniya S. Zayulina, Alexander G. Elcheninov, Stepan Toshchakov, Tatiana Kochetkova, Andrei A. Novikov, Jenny M. Blamey, Ilya Kublanov
Summary: The novel hyperthermophilic crenarchaeon strain 3507LT(T) was isolated from a terrestrial hot spring in Chile. It grows optimally at 85 degrees C and pH 6.0-6.7, requiring the presence of culture broth filtrate of another hyperthermophilic archaeon as well as yeast extract for growth. The strain is an anaerobic chemoorganoheterotroph, fermenting various sugars as its main metabolic pathway.
SYSTEMATIC AND APPLIED MICROBIOLOGY
(2021)
Review
Microbiology
T. Kochetkova, O. A. Podosokorskaya, A. G. Elcheninov, I. Kublanov
Summary: This review highlights key findings from studies on the diversity of thermophilic prokaryotes in hot springs within the Russian Federation. It summarizes research conducted over several decades on microbial communities in various regions, discussing their taxonomy, energy processes, carbon cycling, and uncultivated lineages in thermal environments.
Article
Microbiology
Thomas Klaus, Sabrina Ninck, Andreas Albersmeier, Tobias Busche, Daniel Wibberg, Jianbing Jiang, Alexander G. Elcheninov, Kseniya S. Zayulina, Farnusch Kaschani, Christopher Braesen, Herman S. Overkleeft, Joern Kalinowski, Ilya V. Kublanov, Markus Kaiser, Bettina Siebers
Summary: This study is the first to apply activity-based protein profiling (ABPP) in Archaea, identifying two novel proteins with xylanase activity in extremophilic organisms. This expands the applicability of ABPP for glycoside hydrolase identification in hyperthermophiles.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Dimitry Y. Sorokin, Alexander G. Elcheninov, Tatiana Khijniak, Alicia P. Zaharycheva, Olga Boueva, Elena Ariskina, Boyke Bunk, Cathrin Sproer, Lyudmila Evtushenko, Ilya Kublanov, Richard L. Hahnke
Summary: A new species, Natronosporangium hydrolitycum, was identified from hydrolytic bacteria in saline alkaline soils in southwestern Siberia. It exhibits obligate alkaliphilic and moderate halophilic characteristics, utilizing various sugars as growth substrates.
SYSTEMATIC AND APPLIED MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Dimitry Y. Sorokin, Alexander G. Elcheninov, Tatjana Khizhniak, Michel Koenen, Nicole J. Bale, Jaap S. Sinninghe Damste, Ilya V. Kublanov
Summary: This study isolated and classified several alkaliphilic haloaloarchaea from hypersaline soda lakes in southwestern Siberia. These archaea can grow using various starch-like substrates and exhibit moderate alkaliphilic and low Mg-demanding properties.
SYSTEMATIC AND APPLIED MICROBIOLOGY
(2022)
Article
Microbiology
Evgenii N. Frolov, Anastasiia I. Maltseva, Alexander G. Elcheninov, Ilya V. Kublanov
Summary: The genome of Pyrobaculum sp. strain 3827-6, a facultative autotrophic hyperthermophilic archaeon isolated from a Kamchatka hot spring, was sequenced and analyzed. Genome analysis predicted the presence of the dicarboxylate/4-hydroxybutyrate cycle and a [NiFe]-hydrogenase, as well as the tricarboxylic acid cycle, indicating the potential for both autotrophic and heterotrophic growth of this strain.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2023)
Article
Microbiology
Olga A. Podosokorskaya, Alexandra A. Klyukina, Tatiana V. Panova, Vladimir A. Rodin, Maria I. Zvereva, Adolf S. Tulenkov, Alexander V. Lebedinsky, Ilya V. Kublanov, Alexander G. Elcheninov
Summary: The genome of the aerobic thermophilic bacterium Thermomicrobium sp. strain 4228-Ro, isolated from a hot spring in Kamchatka, was sequenced and analyzed. The findings revealed the pathway by which the bacterium utilizes sugars aerobically, which was supported by growth experiments.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2023)
Article
Microbiology
Alexander G. Elcheninov, Kseniya S. Zayulina, Polina A. Shcherbakova, Mariia K. Kremneva, Liliya A. Gavirova, Andrey I. Shestakov, Ilya V. Kublanov
Summary: A draft genome sequence of Lactococcus lactis strain 12-16-PSH, which was isolated from prostokvasha, is reported. The genome assembly of strain 12-16-PSH contained 63 contigs, with a total length of 2,468,647 bp. A total of 2,421 protein-coding genes were predicted, among which 6 encoded bacteriocins while 15 encoded glycosyl transferases, presumably involved in exopolysaccharide biosynthesis.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2023)
Meeting Abstract
Biochemistry & Molecular Biology
E. Bonch-Osmolovskaya, E. Frolov, A. Slobodkin, T. Kochetkova, A. Lebedinsky, I. Kublanov
Article
Multidisciplinary Sciences
Aleksei A. Korzhenkov, Alina V. Tepliuk, Konstantin V. Sidoruk, Konstantin E. Voyushin, Maksim V. Patrushev, Ilya V. Kublanov, Stepan V. Toshchakov
Summary: A dataset of four draft genome sequences of Bifidobacterium strains is presented, highlighting high completeness and low contamination levels. Genetic determinants of probiotic capabilities were identified, expanding knowledge on genomic diversity of probiotic strains of Bifidobacterium genus. The dataset is available in NCBI and Mendeley Data repository.
