129,371 results match your criteria genus

Pseudomonas lalucatii sp. nov. isolated from Vallgornera, a karstic cave in Mallorca, Western Mediterranean.

Syst Appl Microbiol 2021 Apr 21;44(3):126205. Epub 2021 Apr 21.

Microbiologia, Departament de Biologia, Edifici Guillem Colom, Universitat de les, Illes Balears, Campus UIB, 07122 Palma de Mallorca, Spain; Institut Mediterrani d'Estudis Avançats (IMEDEA, CSIC-UIB), Campus UIB, 07122 Palma de Mallorca, Spain. Electronic address:

Caves are extreme underground environments colonized by oligotrophic bacterial communities that influence mineral transformations. The identification at the species level is important and this study aims to the taxonomic characterisation of four bacterial strains previously isolated from rock surfaces and water samples from a karstic cave located on Mallorca (Spain) that were assigned to the genus Pseudomonas according to 16S rRNA nucleotide sequence analysis. Sequence analysis of the RNA polymerase sigma factor gene (rpoD) allocated these strains to the P. Read More

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Molecular phylogeny, classification, biogeography and diversification patterns of a diverse group of moths (Geometridae: Boarmiini).

Mol Phylogenet Evol 2021 May 11:107198. Epub 2021 May 11.

Department of Biology, Lund University, Sweden. Electronic address:

Understanding how and why some groups have become more species-rich than others, and how past biogeography may have shaped their current distribution, are questions that evolutionary biologists have long attempted to answer. We investigated diversification patterns and historical biogeography of a hyperdiverse lineage of Lepidoptera, the geometrid moths, by studying its most species-rich tribe Boarmiini, which comprises ca. 200 genera and ca. Read More

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De novo transcriptome assembly of the green alga Ankistrodesmus falcatus.

PLoS One 2021 14;16(5):e0251668. Epub 2021 May 14.

Department of Biological Sciences, University of South Carolina, Columbia, SC, United States of America.

Ankistrodesmus falcatus is a globally distributed freshwater chlorophyte that is a candidate for biofuel production, is used to study the effects of toxins on aquatic communities, and is used as food in zooplankton research. Each of these research fields is transitioning to genomic tools. We created a reference transcriptome for of A. Read More

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Structural features and phylogenetic implications of Cicadellidae subfamily and two new mitogenomes leafhoppers.

PLoS One 2021 14;16(5):e0251207. Epub 2021 May 14.

School of Karst Science, Guizhou Normal University/State Key Laboratory Cultivation Base for Guizhou Karst Mountain Ecology Environment of China, Guiyang, China.

Complete mitochondrial genome sequences facilitate species identification and analyses of phylogenetic relationships. However, the available data are limited to the diverse and widespread insect family Cicadellidae. This study analyzes and summarizes the complete mitochondrial genome structure characteristics of 11 leafhopper subfamilies and two newly sequenced Typhlocybinae species, Empoascanara wengangensis and E. Read More

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HyRAD-X exome capture museomics unravels giant ground beetle evolution.

Genome Biol Evol 2021 May 14. Epub 2021 May 14.

Natural History Museum of Geneva, CP 6434, CH-1211 Geneva 6, Switzerland.

Advances in phylogenomics contribute towards resolving long-standing evolutionary questions. Notwithstanding, genetic diversity contained within more than a billion biological specimens deposited in natural history museums remains recalcitrant to analysis owing to challenges posed by its intrinsically degraded nature. Yet that tantalizing resource could be critical in overcoming taxon sampling constraints hindering our ability to address major evolutionary questions. Read More

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Storage Behavior and Cryopreservation of Citrus cavaleriei, an Endangered, Cold-resistant Species of Northeast India with Exceptionally Large Seeds.

Cryo Letters 2020 Sep-Oct;41(5):281-290

Royal Botanic Gardens, Kew, Wakehurst, Ardingly, West Sussex RH17 6TN, UK.

Background: Ichang Papeda (Citrus cavaleriei H.Lév. ex Cavalerie) is a wild and endangered species of NE India that requires urgent preservation of its genetic resources. Read More

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Characterization of Iturin V, a Novel Antimicrobial Lipopeptide from a Potential Probiotic Strain Lactobacillus sp. M31.

Probiotics Antimicrob Proteins 2021 May 13. Epub 2021 May 13.

CSIR-Institute of Microbial Technology, Chandigarh, India.

Members of lactic acid bacteria group are known to produce various antimicrobial substances. Cyclic lipopeptides are one such potent class of amphipathic natural biosurfactants that exhibit bactericidal and immunomodulatory properties. In this study, we aimed to investigate antimicrobial and immunomodulatory activities of a lipopeptide secreted by a LAB isolate strain M31 identified as a member of the genus Lactobacillus. Read More

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Anaerococcus faecalis sp. nov., Isolated from Swine Faeces.

Curr Microbiol 2021 May 13. Epub 2021 May 13.

Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.

An obligate anaerobic, Gram-stain-positive, non-spore forming, non-motile, catalase and oxidase-negative, coccoid-shaped bacterium designated AGMB00486 was isolated from swine faeces. The optimal growth of the isolate occurred at pH 8.0 and 37 ℃. Read More

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Gut Microbiota Mediates the Preventive Effects of Dietary Capsaicin Against Depression-Like Behavior Induced by Lipopolysaccharide in Mice.

Front Cell Infect Microbiol 2021 27;11:627608. Epub 2021 Apr 27.

Department of Pharmacognosy, School of Pharmacy, China Medical University, Shenyang, China.

Capsaicin (CAP) is an active ingredient in chili pepper that is frequently consumed. It exerts various pharmacological activities, and also has potential effects on mental illness. However, its mechanism of antidepressant effects is still unclear. Read More

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Evidence of integumentary scale diversity in the late Jurassic Sauropod sp. from the Mother's Day Quarry, Montana.

PeerJ 2021 29;9:e11202. Epub 2021 Apr 29.

Bighorn Basin Paleontological Institute, Red Lodge, Montana, United States.

The life appearance of dinosaurs is a hotly debated topic in the world of paleontology, especially when it comes to dinosaur integument. In the case of sauropods, however, the topic is harder to properly discuss due to the limited amount of fossilized skin impressions that have been discovered. Thus far, the fossil record of sauropod integument fossils include titanosaur embryos from Patagonia, possible keratinous diplodocid dorsal spines, track ways with foot impressions, and other isolated skin impressions found in association with sauropod body fossils. Read More

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A new phylogenetic hypothesis of Tanystropheidae (Diapsida, Archosauromorpha) and other "protorosaurs", and its implications for the early evolution of stem archosaurs.

PeerJ 2021 3;9:e11143. Epub 2021 May 3.

University of Zurich, Palaeontological Institute and Museum, Zurich, Switzerland.

The historical clade "Protorosauria" represents an important group of archosauromorph reptiles that had a wide geographic distribution between the Late Permian and Late Triassic. "Protorosaurs" are characterized by their long necks, which are epitomized in the genus and in . Recent phylogenetic analyses have indicated that "Protorosauria" is a polyphyletic clade, but the exact relationships of the various "protorosaur" taxa within the archosauromorph lineage is currently uncertain. Read More

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PhyloPrimer: a taxon-specific oligonucleotide design platform.

PeerJ 2021 29;9:e11120. Epub 2021 Apr 29.

School of Biological Sciences, University of Bristol, Bristol, UK.

Many environmental and biomedical biomonitoring and detection studies aim to explore the presence of specific organisms or gene functionalities in microbiome samples. In such cases, when the study hypotheses can be answered with the exploration of a small number of genes, a targeted PCR-approach is appropriate. However, due to the complexity of environmental microbial communities, the design of specific primers is challenging and can lead to non-specific results. Read More

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Mitogenomics of five leafhoppers (Hemiptera: Cicadellidae: Coelidiinae) and their phylogenetic implications.

PeerJ 2021 27;9:e11086. Epub 2021 Apr 27.

Institute of Entomology, Guizhou University, Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guiyang, Guizhou Provincial, China.

Similar morphological characteristics and limited molecular data of resulted in their unknown phylogenetic statuses and equivocal relationships. To further understand the genus , we sequenced and annotated five complete mitochondrial genomes (mitogenomes). Our results show that mitogenomes range from 15,205 bp to 15,993 bp in length and include 37 typical genes (13 protein-coding genes, 22 tRNAs, and 2 rRNAs) and a control region. Read More

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SW178 sp. nov., an intestinal bacterium of feral chicken.

PeerJ 2021 27;9:e11050. Epub 2021 Apr 27.

Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, United States.

A Gram-positive, coccobacillus, white raised and circular with an entire edge colony, and obligately anaerobic bacterium, strain SW178 was isolated from the cecum content of feral chickens in Brookings, South Dakota, USA. The most closely related strain based on 16S rRNA gene sequence analysis of strain SW178 was ATCC 27756 ( ATCC 27756) with 96.94% similarity. Read More

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Shifts in the Oral Microbiota During a Four-Week Commercial Saturation Dive to 200 Meters.

Front Physiol 2021 27;12:669355. Epub 2021 Apr 27.

Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, NTNU Norwegian University of Science and Technology, Trondheim, Norway.

During commercial saturation diving, divers live and work under hyperbaric and hyperoxic conditions. The myriads of bacteria that live in and on the human body must adjust to the resultant hyperbaric stress. In this study, we examined the shifts in bacterial content in the oral cavity of saturation divers, using a metagenomic approach to determine the diversity in the composition of bacterial phyla and genera in saliva from 23 male divers before, during, and immediately after 4 weeks of commercial heliox saturation diving to a working depth of circa 200 m. Read More

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Using past interglacial temperature maxima to explore transgressions in modern Maldivian coral and Amphistegina bleaching thresholds.

Sci Rep 2021 May 13;11(1):10267. Epub 2021 May 13.

Department of GeoSciences, University of Fribourg, Chemin du Musée 6, 1700, Fribourg, Switzerland.

Tropical corals and Amphistegina, an example genus of symbiont-bearing larger benthic foraminifera, are presently living close to their thermal bleaching thresholds. As such, these essential reef-building organisms are vulnerable to the future prospect of more frequent sea surface temperature (SST) extremes. Exploring the earth's paleo-climatic record, including interglacials warmer than present, may provide insights into future oceanographic conditions. Read More

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Metagenomic analysis reveals oropharyngeal microbiota alterations in patients with COVID-19.

Signal Transduct Target Ther 2021 May 13;6(1):191. Epub 2021 May 13.

School of Life Science and Technology, Harbin Institute of Technology, Harbin, China.

COVID-19 remains a serious emerging global health problem, and little is known about the role of oropharynx commensal microbes in infection susceptibility and severity. Here, we present the oropharyngeal microbiota characteristics identified by shotgun metagenomic sequencing analyses of oropharynx swab specimens from 31 COVID-19 patients, 29 influenza B patients, and 28 healthy controls. Our results revealed a distinct oropharyngeal microbiota composition in the COVID-19 patients, characterized by enrichment of opportunistic pathogens such as Veillonella and Megasphaera and depletion of Pseudopropionibacterium, Rothia, and Streptococcus. Read More

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Near-Complete Genome Sequences of Five Siciniviruses from North America.

Microbiol Resour Announc 2021 May 13;10(19). Epub 2021 May 13.

Exotic and Emerging Avian Viral Disease Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, ARS, USDA, Athens, Georgia, USA

Here, we report near-complete genome sequences of sicinivirus from U.S. poultry flocks in 2003 to 2005 and Mexico in 2019. Read More

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Combining transposon mutagenesis and reporter genes to identify novel regulators of the topA promoter in Streptomyces.

Microb Cell Fact 2021 May 13;20(1):99. Epub 2021 May 13.

Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland.

Background: Identifying the regulatory factors that control transcriptional activity is a major challenge of gene expression studies. Here, we describe the application of a novel approach for in vivo identification of regulatory proteins that may directly or indirectly control the transcription of a promoter of interest in Streptomyces.

Results: A method based on the combination of Tn5 minitransposon-driven random mutagenesis and lux reporter genes was applied for the first time for the Streptomyces genus. Read More

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Enhanced pollutant removal from rural non-point source wastewater using a two-stage multi-soil-layering system with blended carbon sources: Insights into functional genes, microbial community structure and metabolic function.

Chemosphere 2021 Jul 20;275:130007. Epub 2021 Feb 20.

Department of Environmental Science, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China. Electronic address:

A two-stage multi-soil-layering system with blended carbon sources (MSL-BCS) was constructed at pilot scale for treatment of rural non-point source wastewater. Results showed the MSL-BCS system had effective removal efficiencies with 64% of TN and 60% of TP, respectively. The addition of BCS could result in higher (1. Read More

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Detection of SARS-CoV-2 RNA in bivalve mollusks and marine sediments.

Sci Total Environ 2021 May 6;786:147534. Epub 2021 May 6.

Department of Microbiology and Parasitology, CIBUS-Facultade de Bioloxía & Institute CRETUS, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain. Electronic address:

The presence of SARS-CoV-2 in wastewater pose the question of whether this new pandemic virus could be released into watercourses and potentially continue to finally reach coastal waters. In this study, we employed two bivalve molluscan species from the genus Ruditapes as sentinel organisms to investigate the presence of SARS-CoV-2 signals in the marine coastal environment. Estuarine sediments from the natural clam banks were also analyzed. Read More

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Detailed structural characterization of cardiolipins from various biological sources using a complex analytical strategy comprising fractionation, hydrolysis and chiral chromatography.

J Chromatogr A 2021 Apr 26;1648:462185. Epub 2021 Apr 26.

Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic. Electronic address:

Cardiolipins (1,3-bis(sn-3'-phosphatidyl)-sn-glycerol) (CLs) are widespread in many organisms, from bacteria to higher green plants and mammals. CLs were observed in Gram-positive bacterium of the genus Kocuria, brewer's yeast Saccharomyces, the green alga Chlamydomonas, spinach and beef heart. A mixture of molecular species of CLs was obtained from total lipids by hydrophilic interaction liquid chromatography (HILIC), and these were further separated and identified by reversed phase LC/MS with negative tandem electrospray ionization. Read More

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Biogeographic origins of southern African Silene (Caryophyllaceae).

Mol Phylogenet Evol 2021 May 10:107199. Epub 2021 May 10.

Department of Biological and Environmental Sciences, University of Gothenburg, Carl Skottsbergs Gata 22 B, 413 19 Gothenburg, Sweden; Gothenburg Global Biodiversity Centre, Box 461, 405 30 Gothenburg, Sweden.

Silene (Caryophyllaceae) is distributed predominantly in the northern Hemisphere, where it is most diverse around the Mediterranean Basin. The genus is also well represented in North Africa, extending into tropical, sub-Saharan and southern Africa. Eight native species are recognized in southern Africa, taxonomically placed in two sections: Elisanthe and Silene s. Read More

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Phylogenomic approach reveals strong signatures of introgression in the rapid diversification of Neotropical true fruit flies (Anastrepha: Tephritidae).

Mol Phylogenet Evol 2021 May 10:107200. Epub 2021 May 10.

Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil.

New sequencing techniques have allowed us to explore the variation on thousands of genes and elucidate evolutionary relationships of lineages even in complex scenarios, such as when there is rapid diversification. That seems to be the case of species in the genus Anastrepha, which shows great species diversity that has been divided into 21 species groups, several of which show wide geographical distribution. The fraterculus group has several economically important species and it is also an outstanding model for speciation studies, since it includes several lineages that have diverged recently possibly in the presence of interspecific gene flow. Read More

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A combination of cecum microbiome and metabolome in CUMS depressed rats reveals the antidepressant mechanism of traditional Chinese medicines: a case study of Xiaoyaosan.

J Ethnopharmacol 2021 May 10:114167. Epub 2021 May 10.

Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, China; Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China. Electronic address:

Ethnopharmacological Relevance: Xiaoyaosan (XYS), a representative and classic prescription in traditional Chinese medicines (TCMs), has been used for thousands of years for treating depression. The anti-depression effect of XYS has been demonstrated both clinically and experimentally. However, it is still unclear that whether XYS could regulate the abnormalities of gut microbiota and metabolites of cecum induced by depression, and in which way. Read More

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Health beneficial and pharmacological properties of p-cymene.

Food Chem Toxicol 2021 May 10:112259. Epub 2021 May 10.

Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, and Genomic Center of Human Pathologies, Mohammed V University, Rabat, Morocco. Electronic address:

p-cymene also known as p-cymol or p-isopropyltoluene is an alkyl-substituted aromatic compound naturally occurring in essential oils (EOs) of various aromatic plants, including the genus of Artemisia, Protium, Origanum, and Thymus. It is related to the family of terpenes, especially monocyclic monoterpenes. p-cymene is also present in several food-based plants such as carrots, orange juice, grapefruit, tangerine, raspberries and several spices. Read More

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Comparative mitogenomes of three species in Moenkhausia: Rare irregular gene rearrangement within Characidae.

Int J Biol Macromol 2021 May 10. Epub 2021 May 10.

College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, People's Republic of China. Electronic address:

Generally, a teleostean group possesses only one type or a set of similar mitochondrial gene arrangements. However, a new type of gene arrangement has been identified in the mitochondrial genomes (mitogenomes) of Moenkhausia. Here, three newly sequenced complete mitogenomes of tetras (Characidae: Moenkhausia) are presented (M. Read More

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Two newly identified Haematococcus strains efficiently accumulated radioactive cesium over higher astaxanthin production.

Environ Res 2021 May 10:111301. Epub 2021 May 10.

Department of Biomedical Engineering, Sogang University, Baekbeom-ro 35, Mapo-gu, Seoul, Republic of Korea; Department of Mechanical Engineering, Sogang University, Baekbeom-ro 35, Mapo-gu, Seoul, Republic of Korea. Electronic address:

In this study, we investigated the morphological, genomic and bioaccumulation characteristics of two isolated Haematococcus strains (namely Goyang and Sogang), which were newly discovered in South Korea. Morphological analysis revealed that the isolated strains were unicellular and bi-flagellated green microalgae that formed thickened walls at the palmelloid or red-cyst phase. Phylogenetic analysis of 18S rRNA and rbcL gDNA sequences demonstrated that both strains were taxonomically related to the genus Haematococcus. Read More

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The bacterial diversity of sun-dried spanish mackerel in Dalian and application of Lactobacillus plantarum X23 as a bio-preservative.

J Food Prot 2021 May 13. Epub 2021 May 13.

Department of Food and Biological Engineering, Beijing Vocational College of Agriculture, Beijing 102442, P.R. China.

Sun-dried spanish mackerel is a common food in Dalian and made by adding salt and sun drying, which has special physical, chemical and microbiological properties. In this study, the physicochemical properties and microbial composition of the commercial available sun-dried spanish mackerel in Dalian were assessed, and some Lactobacillus strains were screened as bio-preservative for sun-dried spanish mackerel preparation. The results showed that the TVBN content in the traditional sun-dried spanish mackerel samples from Dalian was within 30 mg/100g, the histamine content was 7-17 mg/kg, and the dominant bacteria at the genus level were Lactobacillus , Psychrobacter and Ralstonia . Read More

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Description of sp. nov., a phytopathogenic actinobacterium isolated from barley seeds, causing leaf brown spot and decline.

Int J Syst Evol Microbiol 2021 May;71(5)

Canadian Food Inspection Agency (CFIA), Charlottetown Laboratory, Charlottetown, PE C1A 5T1, Canada.

is a Gram-stain-positive bacterium with eight subspecies, five of which have been redefined as different species on the basis of their genome sequence data. On the basis of the results of phylogenetic analysis of gene sequences, strains of members of the genus isolated from barley have been grouped in a separate clade from other species and subspecies of the genus . In this study, the biochemical, physiological, fatty acids and genetic characteristics of strains DM1 and DM3, which represented the barley isolates, were examined. Read More

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