Alphaproteobacteria: A class in the phylum PROTEOBACTERIA comprised mostly of two major phenotypes: purple non-sulfur bacteria and aerobic bacteriochlorophyll-containing bacteria.RNA, Ribosomal, 16S: Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.Rhodobacteraceae: A family in the order Rhodobacterales, class ALPHAPROTEOBACTERIA.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Seawater: The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.DNA, Ribosomal: DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.DNA, Bacterial: Deoxyribonucleic acid that makes up the genetic material of bacteria.Sequence Analysis, DNA: A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.Proteobacteria: A phylum of bacteria consisting of the purple bacteria and their relatives which form a branch of the eubacterial tree. This group of predominantly gram-negative bacteria is classified based on homology of equivalent nucleotide sequences of 16S ribosomal RNA or by hybridization of ribosomal RNA or DNA with 16S and 23S ribosomal RNA.Bacteria: One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.Rhodospirillaceae: A family of phototrophic bacteria, in the order Rhodospirillales, isolated from stagnant water and mud.Gammaproteobacteria: A group of the proteobacteria comprised of facultatively anaerobic and fermentative gram-negative bacteria.Rhodospirillales: An order of photosynthetic bacteria representing a physiological community of predominantly aquatic bacteria.Genes, rRNA: Genes, found in both prokaryotes and eukaryotes, which are transcribed to produce the RNA which is incorporated into RIBOSOMES. Prokaryotic rRNA genes are usually found in OPERONS dispersed throughout the GENOME, whereas eukaryotic rRNA genes are clustered, multicistronic transcriptional units.Beijerinckiaceae: A family of aerobic gram-negative rods that are nitrogen fixers. They are highly viscous, and appear as a semitransparent slime in giant colonies.Bacteriochlorophyll A: A specific bacteriochlorophyll that is similar in structure to chlorophyll a.Acetobacteraceae: A family of gram-negative aerobic bacteria consisting of ellipsoidal to rod-shaped cells that occur singly, in pairs, or in chains.Base Composition: The relative amounts of the PURINES and PYRIMIDINES in a nucleic acid.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Paracoccus: Gram-negative non-motile bacteria found in soil or brines.Roseobacter: A genus of obligately aerobic marine phototrophic and chemoorganotrophic bacteria, in the family RHODOBACTERACEAE.Biota: The spectrum of different living organisms inhabiting a particular region, habitat, or biotope.Betaproteobacteria: A class in the phylum PROTEOBACTERIA comprised of chemoheterotrophs and chemoautotrophs which derive nutrients from decomposition of organic material.Heterotrophic Processes: The processes by which organisms utilize organic substances as their nutrient sources. Contrasts with AUTOTROPHIC PROCESSES which make use of simple inorganic substances as the nutrient supply source. Heterotrophs can be either chemoheterotrophs (or chemoorganotrophs) which also require organic substances such as glucose for their primary metabolic energy requirements, or photoheterotrophs (or photoorganotrophs) which derive their primary energy requirements from light. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; heterotrophy; chemotrophy; or PHOTOTROPHY) to utilize different sources to meet their nutrients and energy requirements.Geologic Sediments: A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from the weathering of rock and is carried by, suspended in, or dropped by air, water, or ice. It refers also to a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface, such as sand, gravel, silt, mud, fill, or loess. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1689)Aquatic Organisms: Organisms that live in water.Mediterranean SeaBiodiversity: The variety of all native living organisms and their various forms and interrelationships.Soil Microbiology: The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms.Rickettsiaceae: A family of small, gram-negative organisms, often parasitic in humans and other animals, causing diseases that may be transmitted by invertebrate vectors.Cluster Analysis: A set of statistical methods used to group variables or observations into strongly inter-related subgroups. In epidemiology, it may be used to analyze a closely grouped series of events or cases of disease or other health-related phenomenon with well-defined distribution patterns in relation to time or place or both.Water Microbiology: The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms.Ochrobactrum: A genus of the family BRUCELLACEAE comprising obligately aerobic gram-negative rods with parallel sides and rounded ends.Rhodovulum: A genus of facultatively or obligately anaerobic marine phototrophic bacteria, in the family RHODOBACTERACEAE.Fatty Acids: Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)Bacterial Typing Techniques: Procedures for identifying types and strains of bacteria. The most frequently employed typing systems are BACTERIOPHAGE TYPING and SEROTYPING as well as bacteriocin typing and biotyping.Wetlands: Environments or habitats at the interface between truly terrestrial ecosystems and truly aquatic systems making them different from each yet highly dependent on both. Adaptations to low soil oxygen characterize many wetland species.Hyphomicrobium: A genus of rod-shaped, oval, or bean-shaped bacteria found in soil and fresh water. Polar prosthecae are present and cells reproduce by budding at the tips of the prosthecae. Cells of this genus are aerobic and grow best with one-carbon compounds. (From Bergey's Manual of Determinative Bacteriology, 9th ed)Bacteroidetes: A phylum of bacteria comprised of three classes: Bacteroides, Flavobacteria, and Sphingobacteria.Sewage: Refuse liquid or waste matter carried off by sewers.Denaturing Gradient Gel Electrophoresis: Electrophoresis in which various denaturant gradients are used to induce nucleic acids to melt at various stages resulting in separation of molecules based on small sequence differences including SNPs. The denaturants used include heat, formamide, and urea.RNA, Bacterial: Ribonucleic acid in bacteria having regulatory and catalytic roles as well as involvement in protein synthesis.Aerobiosis: Life or metabolic reactions occurring in an environment containing oxygen.Gluconobacter: A genus of gram-negative, rod-shaped to ellipsoidal bacteria occurring singly or in pairs and found in flowers, soil, honey bees, fruits, cider, beer, wine, and vinegar. (From Bergey's Manual of Determinative Bacteriology, 9th ed)Verrucomicrobia: A phylum of gram-negative bacteria containing seven class-level groups from a wide variety of environments. Most members are chemoheterotrophs.North SeaSphingomonadaceae: A family of gram-negative, asporogenous rods or ovoid cells, aerobic or facultative anaerobic chemoorganotrophs. They are commonly isolated from SOIL, activated sludge, or marine environments.Symbiosis: The relationship between two different species of organisms that are interdependent; each gains benefits from the other or a relationship between different species where both of the organisms in question benefit from the presence of the other.Ochrobactrum anthropi: A species of gram-negative, obligately aerobic rods. Motility occurs by peritrichous flagella. (From Bergey's Manual of Determinative Bacteriology, 9th ed)Quinones: Hydrocarbon rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.Plankton: Community of tiny aquatic PLANTS and ANIMALS, and photosynthetic BACTERIA, that are either free-floating or suspended in the water, with little or no power of locomotion. They are divided into PHYTOPLANKTON and ZOOPLANKTON.Genome, Bacterial: The genetic complement of a BACTERIA as represented in its DNA.Fresh Water: Water containing no significant amounts of salts, such as water from RIVERS and LAKES.Atlantic OceanMethylocystaceae: A family of gram-negative methanotrophs in the order Rhizobiales, distantly related to the nitrogen-fixing and phototrophic bacteria.Sphingomonas: A genus of gram-negative, aerobic, rod-shaped bacteria characterized by an outer membrane that contains glycosphingolipids but lacks lipopolysaccharide. They have the ability to degrade a broad range of substituted aromatic compounds.Gene Transfer, Horizontal: The naturally occurring transmission of genetic information between organisms, related or unrelated, circumventing parent-to-offspring transmission. Horizontal gene transfer may occur via a variety of naturally occurring processes such as GENETIC CONJUGATION; GENETIC TRANSDUCTION; and TRANSFECTION. It may result in a change of the recipient organism's genetic composition (TRANSFORMATION, GENETIC).Phototrophic Processes: Processes by which phototrophic organisms use sunlight as their primary energy source. Contrasts with chemotrophic processes which do not depend on light and function in deriving energy from exogenous chemical sources. Photoautotrophy (or photolithotrophy) is the ability to use sunlight as energy to fix inorganic nutrients to be used for other organic requirements. Photoautotrophs include all GREEN PLANTS; GREEN ALGAE; CYANOBACTERIA; and green and PURPLE SULFUR BACTERIA. Photoheterotrophs or photoorganotrophs require a supply of organic nutrients for their organic requirements but use sunlight as their primary energy source; examples include certain PURPLE NONSULFUR BACTERIA. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; HETEROTROPHY; chemotrophy; or phototrophy) to utilize different sources to meet their nutrients and energy requirements.Ecosystem: A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Archaea: One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.Pacific OceanOceans and Seas: A great expanse of continuous bodies of salt water which together cover more than 70 percent of the earth's surface. Seas may be partially or entirely enclosed by land, and are smaller than the five oceans (Atlantic, Pacific, Indian, Arctic, and Antarctic).Waste Disposal, Fluid: The discarding or destroying of liquid waste products or their transformation into something useful or innocuous.Locomotion: Movement or the ability to move from one place or another. It can refer to humans, vertebrate or invertebrate animals, and microorganisms.Bacterial Proteins: Proteins found in any species of bacterium.Pigments, Biological: Any normal or abnormal coloring matter in PLANTS; ANIMALS or micro-organisms.Water Purification: Any of several processes in which undesirable impurities in water are removed or neutralized; for example, chlorination, filtration, primary treatment, ion exchange, and distillation. It includes treatment of WASTE WATER to provide potable and hygienic water in a controlled or closed environment as well as provision of public drinking water supplies.Species Specificity: The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.Gene Expression Regulation, Bacterial: Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in bacteria.Actinobacteria: Class of BACTERIA with diverse morphological properties. Strains of Actinobacteria show greater than 80% 16S rDNA/rRNA sequence similarity among each other and also the presence of certain signature nucleotides. (Stackebrandt E. et al, Int. J. Syst. Bacteriol. (1997) 47:479-491)Porifera: The phylum of sponges which are sessile, suspension-feeding, multicellular animals that utilize flagellated cells called choanocytes to circulate water. Most are hermaphroditic. They are probably an early evolutionary side branch that gave rise to no other group of animals. Except for about 150 freshwater species, sponges are marine animals. They are a source of ALKALOIDS; STEROLS; and other complex molecules useful in medicine and biological research.Metagenomics: The genomic analysis of assemblages of organisms.Sinorhizobium meliloti: A species of gram-negative, aerobic bacteria that causes formation of root nodules on some, but not all, types of sweet clover, MEDICAGO SATIVA, and fenugreek.Metagenome: A collective genome representative of the many organisms, primarily microorganisms, existing in a community.Ubiquinone: A lipid-soluble benzoquinone which is involved in ELECTRON TRANSPORT in mitochondrial preparations. The compound occurs in the majority of aerobic organisms, from bacteria to higher plants and animals.Soil Pollutants: Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.Nucleic Acid Hybridization: Widely used technique which exploits the ability of complementary sequences in single-stranded DNAs or RNAs to pair with each other to form a double helix. Hybridization can take place between two complimentary DNA sequences, between a single-stranded DNA and a complementary RNA, or between two RNA sequences. The technique is used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands. (Kendrew, Encyclopedia of Molecular Biology, 1994, p503)Korea: Former kingdom, located on Korea Peninsula between Sea of Japan and Yellow Sea on east coast of Asia. In 1948, the kingdom ceased and two independent countries were formed, divided by the 38th parallel.In Situ Hybridization, Fluorescence: A type of IN SITU HYBRIDIZATION in which target sequences are stained with fluorescent dye so their location and size can be determined using fluorescence microscopy. This staining is sufficiently distinct that the hybridization signal can be seen both in metaphase spreads and in interphase nuclei.Microscopy, Electron, Transmission: Electron microscopy in which the ELECTRONS or their reaction products that pass down through the specimen are imaged below the plane of the specimen.Anaerobiosis: The complete absence, or (loosely) the paucity, of gaseous or dissolved elemental oxygen in a given place or environment. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)DNA Fingerprinting: A technique for identifying individuals of a species that is based on the uniqueness of their DNA sequence. Uniqueness is determined by identifying which combination of allelic variations occur in the individual at a statistically relevant number of different loci. In forensic studies, RESTRICTION FRAGMENT LENGTH POLYMORPHISM of multiple, highly polymorphic VNTR LOCI or MICROSATELLITE REPEAT loci are analyzed. The number of loci used for the profile depends on the ALLELE FREQUENCY in the population.Genes, Bacterial: The functional hereditary units of BACTERIA.Anthozoa: A class in the phylum CNIDARIA, comprised mostly of corals and anemones. All members occur only as polyps; the medusa stage is completely absent.Sequence Homology, Nucleic Acid: The sequential correspondence of nucleotides in one nucleic acid molecule with those of another nucleic acid molecule. Sequence homology is an indication of the genetic relatedness of different organisms and gene function.Flagella: A whiplike motility appendage present on the surface cells. Prokaryote flagella are composed of a protein called FLAGELLIN. Bacteria can have a single flagellum, a tuft at one pole, or multiple flagella covering the entire surface. In eukaryotes, flagella are threadlike protoplasmic extensions used to propel flagellates and sperm. Flagella have the same basic structure as CILIA but are longer in proportion to the cell bearing them and present in much smaller numbers. (From King & Stansfield, A Dictionary of Genetics, 4th ed)Nitrogen Fixation: The process in certain BACTERIA; FUNGI; and CYANOBACTERIA converting free atmospheric NITROGEN to biologically usable forms of nitrogen, such as AMMONIA; NITRATES; and amino compounds.Nitrates: Inorganic or organic salts and esters of nitric acid. These compounds contain the NO3- radical.Sodium Chloride: A ubiquitous sodium salt that is commonly used to season food.Carbon: A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.Biofilms: Encrustations, formed from microbes (bacteria, algae, fungi, plankton, or protozoa) embedding in extracellular polymers, that adhere to surfaces such as teeth (DENTAL DEPOSITS); PROSTHESES AND IMPLANTS; and catheters. Biofilms are prevented from forming by treating surfaces with DENTIFRICES; DISINFECTANTS; ANTI-INFECTIVE AGENTS; and antifouling agents.Oxidoreductases: The class of all enzymes catalyzing oxidoreduction reactions. The substrate that is oxidized is regarded as a hydrogen donor. The systematic name is based on donor:acceptor oxidoreductase. The recommended name will be dehydrogenase, wherever this is possible; as an alternative, reductase can be used. Oxidase is only used in cases where O2 is the acceptor. (Enzyme Nomenclature, 1992, p9)Phenotype: The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.China: A country spanning from central Asia to the Pacific Ocean.Plant Roots: The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990)Biological Evolution: The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics.Evolution, Molecular: The process of cumulative change at the level of DNA; RNA; and PROTEINS, over successive generations.
Phylogenetic analysis of Piscirickettsia salmonis by 16S, internal transcribed spacer (ITS) and 23S ribosomal DNA sequencing. (1/608)
Piscirickettsia salmonis, the etiologic agent of piscirickettsiosis, is a systemic disease of salmonid fish. Variations in virulence and mortality have been observed during epizootics at different geographical regions and in laboratory experiments with isolates from these different locations. This raises the possibility that biogeographical patterns of genetic variation might be a significant factor with this disease. To assess the genetic variability the 16S ribosomal DNA, the internal transcribed spacer (ITS) and the 23S ribosomal DNA of isolates from 3 different hosts and 3 geographic origins were amplified using the polymerase chain reaction (PCR). Results of this analysis confirm that P. salmonis is a member of the gamma subgroup of the Proteobacteria and show that the isolates form a tight monophyletic cluster with 16S rDNA similarities ranging from 99.7 to 98.5%. The ITS regions were 309 base pairs (bp), did not contain tRNA genes, and varied between isolates (95.2 to 99.7% similarity). Two-thirds of the 23S rRNA gene was sequenced from 5 of the isolates, yielding similarities ranging from 97.9 to 99.8%. Phylogenetic trees were constructed based on the 16S rDNA, ITS and 23S rDNA sequence data and compared. The trees were topologically similar, suggesting that the 3 types of molecules provided similar phylogenetic information. Five of the isolates are closely related (> 99.4% 16S rDNA similarity, 99.1% to 99.7% ITS and 99.3 to 99.8% 23S rDNA similarities). The sequence of one Chilean isolate, EM-90, was unique, with 16S rDNA similarities to the other isolates ranging from 98.5 to 98.9%, the ITS from 95.2 to 96.9% and the 23S rDNA from 97.6 to 98.5%. (+info)Transformation of sulfur compounds by an abundant lineage of marine bacteria in the alpha-subclass of the class Proteobacteria. (2/608)
Members of a group of marine bacteria that is numerically important in coastal seawater and sediments were characterized with respect to their ability to transform organic and inorganic sulfur compounds. Fifteen strains representing the Roseobacter group (a phylogenetic cluster of marine bacteria in the alpha-subclass of the class Proteobacteria) were isolated from seawater, primarily from the southeastern United States. Although more than one-half of the isolates were obtained without any selection for sulfur metabolism, all of the isolates were able to degrade the sulfur-containing osmolyte dimethyl sulfoniopropionate (DMSP) with production of dimethyl sulfide (DMS). Five isolates also degraded DMSP with production of methanethiol, indicating that both cleavage and demethylation pathways for DMSP occurred in the same organism, which is unusual. Five isolates were able to reduce dimethyl sulfoxide to DMS, and several isolates also degraded DMS and methanethiol. Sulfite oxygenase activity and methanesulfonic acid oxygenase activity were also present in some of the isolates. The ability to incorporate the reduced sulfur in DMSP and methanethiol into cellular material was studied with one of the isolates. A group-specific 16S rRNA probe indicated that the relative abundance of uncultured bacteria in the Roseobacter group increased in seawater enriched with DMSP or DMS. Because this group typically accounts for >10% of the 16S ribosomal DNA pool in coastal seawater and sediments of the southern United States, clues about its potential biogeochemical role are of particular interest. Studies of culturable representatives suggested that the group could mediate a number of steps in the cycling of both organic and inorganic forms of sulfur in marine environments. (+info)Purification and characterization of the soluble methane monooxygenase of the type II methanotrophic bacterium Methylocystis sp. strain WI 14. (3/608)
Methane monooxygenase (MMO) catalyzes the oxidation of methane to methanol as the first step of methane degradation. A soluble NAD(P)H-dependent methane monooxygenase (sMMO) from the type II methanotrophic bacterium WI 14 was purified to homogeneity. Sequencing of the 16S rDNA and comparison with that of other known methanotrophic bacteria confirmed that strain WI 14 is very close to the genus Methylocystis. The sMMO is expressed only during growth under copper limitation (<0.1 microM) and with ammonium or nitrate ions as the nitrogen source. The enzyme exhibits a low substrate specificity and is able to oxidize several alkanes and alkenes, cyclic hydrocarbons, aromatics, and halogenic aromatics. It has three components, hydroxylase, reductase and protein B, which is involved in enzyme regulation and increases sMMO activity about 10-fold. The relative molecular masses of the native components were estimated to be 229, 41, and 18 kDa, respectively. The hydroxylase contains three subunits with relative molecular masses of 57, 43, and 23 kDa, which are present in stoichiometric amounts, suggesting that the native protein has an alpha(2)beta(2)gamma(2) structure. We detected 3.6 mol of iron per mol of hydroxylase by atomic absorption spectrometry. sMMO is strongly inhibited by Hg(2+) ions (with a total loss of enzyme activity at 0.01 mM Hg(2+)) and Cu(2+), Zn(2+), and Ni(2+) ions (95, 80, and 40% loss of activity at 1 mM ions). The complete sMMO gene sequence has been determined. sMMO genes from strain WI 14 are clustered on the chromosome and show a high degree of homology (at both the nucleotide and amino acid levels) to the corresponding genes from Methylosinus trichosporium OB3b, Methylocystis sp. strain M, and Methylococcus capsulatus (Bath). (+info)Poly(aspartic acid) degradation by a Sphingomonas sp. isolated from freshwater. (4/608)
A poly(aspartic acid) degrading bacterium (strain KT-1 [JCM10459]) was isolated from river water and identified as a member of the genus Sphingomonas. The isolate degraded only poly(aspartic acid)s of low molecular masses (<5 kDa), while the cell extract hydrolyzed high-molecular-mass poly(aspartic acid)s of 5 to 150 kDa to yield aspartic acid monomer. (+info)Characterization of a separate small domain derived from the 5' end of 23S rRNA of an alpha-proteobacterium. (5/608)
We demonstrate the presence of a separate processed domain derived from the 5' end of 23S rRNA in ribosomes of Rhodopseudomonas palustris, a member of the alpha-++proteobacteria. Previous sequencing studies predicted intervening sequences (IVS) at homologous positions within the 23S rRNA genes of several alpha-proteobacteria, including R.palustris, and we find a processed 23S rRNA 5' domain in unfractionated RNA from several species. 5.8S rRNA from eukaryotic cytoplasmic large subunit ribosomes and the bacterial processed 23S rRNA 5' domain share homology, possess similar structures and are both derived by processing of large precursors. However, the internal transcribed spacer regions or IVSs separating them from the main large subunit rRNAs are evolutionarily unrelated. Consistent with the difference in sequence, we find that the site and mechanism of IVS processing also differs. Rhodopseudomonas palustris IVS-containing RNA precursors are cleaved in vitro by Escherichia coli RNase III or a similar activity present in R.palustris extracts at a processing site distinct from that found in eukaryotic systems and this results in only partial processing of the IVS. Surprisingly, in a reaction unlike characterized cases of eubacterial IVS processing, an RNA segment larger than the corresponding DNA insertion is removed which contains conserved sequences. These sequences, by analogy, serve to link the 23S rRNA 5' rRNA domains or 5.8S rRNAs to the main portion of other prokaryotic 23S rRNAs or to eukaryotic 28S rRNAs, respectively. (+info)Bartonella vinsonii subsp. berkhoffii and related members of the alpha subdivision of the Proteobacteria in dogs with cardiac arrhythmias, endocarditis, or myocarditis. (6/608)
Cardiac arrhythmias, endocarditis, or myocarditis was identified in 12 dogs, of which 11 were seroreactive to Bartonella vinsonii subspecies berkhoffii antigens. Historical abnormalities were highly variable but frequently included substantial weight loss, syncope, collapse, or sudden death. Fever was an infrequently detected abnormality. Cardiac disease was diagnosed following an illness of short duration in most dogs, but a protracted illness of at least 6 months' duration was reported for four dogs. Valvular endocarditis was diagnosed echocardiographically or histologically in eight dogs, two of which also had moderate to severe multifocal myocarditis. Four dogs lacking definitive evidence of endocarditis were included because of seroreactivity to B. vinsonii antigens and uncharacterized heart murmurs and/or arrhythmias. Alpha proteobacteria were not isolated from the blood by either conventional or lysis centrifugation blood culture techniques. Using PCR amplification and DNA sequencing of a portion of the 16S rRNA gene, B. vinsonii was identified in the blood or heart valves of three dogs. DNA sequence alignment of PCR amplicons derived from blood or tissue samples from seven dogs clustered among members of the alpha subdivision of the Proteobacteria and suggested the possibility of involvement of one or more alpha proteobacteria; however, because of the limited quantity of sequence, the genus could not be identified. Serologic or molecular evidence of coinfection with tick-transmitted pathogens, including Ehrlichia canis, Babesia canis, Babesia gibsonii, or spotted fever group rickettsiae, was obtained for seven dogs. We conclude that B. vinsonii subsp. berkhoffii and closely related species of alpha proteobacteria are an important, previously unrecognized cause of arrhythmias, endocarditis, myocarditis, syncope, and sudden death in dogs. (+info)Oxidation of methyl halides by the facultative methylotroph strain IMB-1. (7/608)
Washed cell suspensions of the facultative methylotroph strain IMB-1 grown on methyl bromide (MeBr) were able to consume methyl chloride (MeCl) and methyl iodide (MeI) as well as MeBr. Consumption of >100 microM MeBr by cells grown on glucose, acetate, or monomethylamine required induction. Induction was inhibited by chloramphenicol. However, cells had a constitutive ability to consume low concentrations (<20 nM) of MeBr. Glucose-grown cells were able to readily oxidize [(14)C]formaldehyde to (14)CO(2) but had only a small capacity for oxidation of [(14)C]methanol. Preincubation of cells with MeBr did not affect either activity, but MeBr-induced cells had a greater capacity for [(14)C]MeBr oxidation than did cells without preincubation. Consumption of MeBr was inhibited by MeI, and MeCl consumption was inhibited by MeBr. No inhibition of MeBr consumption occurred with methyl fluoride, propyl iodide, dibromomethane, dichloromethane, or difluoromethane, and in addition cells did not oxidize any of these compounds. Cells displayed Michaelis-Menten kinetics for the various methyl halides, with apparent K(s) values of 190, 280, and 6,100 nM for MeBr, MeI, and MeCl, respectively. These results suggest the presence of a single oxidation enzyme system specific for methyl halides (other than methyl fluoride) which runs through formaldehyde to CO(2). The ease of induction of methyl halide oxidation in strain IMB-1 should facilitate its mass culture for the purpose of reducing MeBr emissions to the atmosphere from fumigated soils. (+info)Characterization and identification of numerically abundant culturable bacteria from the anoxic bulk soil of rice paddy microcosms. (8/608)
Most-probable-number (liquid serial dilution culture) counts were obtained for polysaccharolytic and saccharolytic fermenting bacteria in the anoxic bulk soil of flooded microcosms containing rice plants. The highest viable counts (up to 2.5 x 10(8) cells per g [dry weight] of soil) were obtained by using xylan, pectin, or a mixture of seven mono- and disaccharides as the growth substrate. The total cell count for the soil, as determined by using 4', 6-diamidino-2-phenylindole staining, was 4.8 x 10(8) cells per g (dry weight) of soil. The nine strains isolated from the terminal positive tubes in counting experiments which yielded culturable populations that were equivalent to about 5% or more of the total microscopic count population belonged to the division Verrucomicrobia, the Cytophaga-Flavobacterium-Bacteroides division, clostridial cluster XIVa, clostridial cluster IX, Bacillus spp., and the class Actinobacteria. Isolates originating from the terminal positive tubes of liquid dilution series can be expected to be representatives of species whose populations in the soil are large. None of the isolates had 16S rRNA gene sequences identical to 16S rRNA gene sequences of previously described species for which data are available. Eight of the nine strains isolated fermented sugars to acetate and propionate (and some also fermented sugars to succinate). The closest relatives of these strains (except for the two strains of actinobacteria) were as-yet-uncultivated bacteria detected in the same soil sample by cloning PCR-amplified 16S rRNA genes (U. Hengstmann, K.-J. Chin, P. H. Janssen, and W. Liesack, Appl. Environ. Microbiol. 65:5050-5058, 1999). Twelve other isolates, which originated from most-probable-number counting series indicating that the culturable populations were smaller, were less closely related to cloned 16S rRNA genes. (+info)Alphaproteobacteria in China". Asian Pacific Journal of Tropical Medicine. 4 (3): 248. doi:10.1016/S1995-7645(11)60079-5. PMID ...
Some Alphaproteobacteria can grow at very low levels of nutrients and have unusual morphology such as stalks and buds. Others ... Garrity GM, Bell JA, Lilburn T (2005). "Class I. Alphaproteobacteria class. nov.". In Brenner DJ, Krieg NR, Staley JT, Garrity ... Alphaproteobacteria: Brucella, Rhizobium, Agrobacterium, Caulobacter, Rickettsia, Wolbachia, etc. Betaproteobacteria: ...
nov.) in the Alphaproteobacteria". International Journal of Systematic and Evolutionary Microbiology. 55 (Pt 5): 2033-2037. doi ...
Alphaproteobacteria Order: Rhizobiales Family: Bartonellaceae. Gieszczykiewicz 1939. Genus: Bartonella. Strong et al. 1915 ...
The Pelagibacterales are an order in the Alphaproteobacteria composed of free-living bacteria that make up roughly one in three ... Subgroup V, which includes alphaproteobacterium HIMB59, basal to the remainder. The above results in a cladogram of the ... "The SAR11 group of alpha-proteobacteria is not related to the origin of mitochondria". PLOS ONE. 7 (1): e30520. Bibcode ... "New rRNA gene-based phylogenies of the Alphaproteobacteria provide perspective on major groups, mitochondrial ancestry and ...
Alpha Proteobacteria Order: Rhizobiales Family: Rhizobiaceae Genus: Agrobacterium Type species Agrobacterium tumefaciens. ( ...
... is a family of Alphaproteobacteria. They are gram-negative and aerobic. The bacteria of this family derive ...
4-46, a species of alphaproteobacteria. The motif is presumed to function as a non-coding RNA. Weinberg Z, Wang JX, Bogue J, et ...
nov., two members of the class Alphaproteobacteria". International Journal of Systematic and Evolutionary Microbiology. 61 (11 ...
Rodríguez-Ezpeleta N, Embley TM (2012). "The SAR11 group of alpha-proteobacteria is not related to the origin of mitochondria ... Williams KP, Sobral BW, Dickerman AW (2007). "A robust species tree for the alphaproteobacteria". J. Bacteriol. 189 (13): 4578- ... The Rickettsiales, also called rickettsias, are an order of small Alphaproteobacteria that are endosymbionts of eukaryotic ... 2015). "Single-cell genomics of a rare environmental alphaproteobacterium provides unique insights into Rickettsiaceae ...
... are a family of the Alphaproteobacteria. An important feature is the presence of sphingolipids in the outer ...
"The origin of mitochondrial cristae from alphaproteobacteria". Molecular Biology and Evolution: msw298. doi:10.1093/molbev/ ...
Mohammed JP, Mattner J (July 2009). "Autoimmune Disease Triggered by Infection with Alphaproteobacteria". Expert Review of ...
It is a basal group in the Alphaproteobacteria. Bazylinski, D. A.; Williams, T. J.; Lefevre, C. T.; Berg, R. J.; Zhang, C. L.; ... Magnetococcus marinus is a species of Alphaproteobacteria that has the peculiar ability to form a structure called a ... Nov.) at the base of the Alphaproteobacteria". International Journal of Systematic and Evolutionary Microbiology. 63: 801. doi: ... "New rRNA gene-based phylogenies of the Alphaproteobacteria provide perspective on major groups, mitochondrial ancestry and ...
nov., a slightly thermophilic member of the Alphaproteobacteria". Systematic and applied microbiology. 33 (2): 60-6. doi: ... nov., a slightly thermophilic member of the Alphaproteobacteria". Systematic and applied microbiology. 33 (2): 60-6. doi: ...
The SAM-II riboswitch is a RNA element found predominantly in alpha-proteobacteria that binds S-adenosyl methionine (SAM). Its ... 2005). "Evidence for a second class of S-adenosylmethionine riboswitches and other regulatory RNA motifs in alpha-proteobacteria ... Page for SAM riboswitch (alpha-proteobacteria) at Rfam. ... and other methionine and SAM biosynthesis genes in other alpha-proteobacteria ...
Moreover, groups of genes with homology to the RcGTA are present in the chromosomes of various types of alphaproteobacteria. ... Another known case of a GTA present in alphaproteobacteria is the Bartonella GTA (BaGTA). The Bartonellaceae do not contain ... Lang, AS and Beatty, JT (2007) "Importance of widespread gene transfer agent genes in alpha-proteobacteria." Trends in ... The GTA produced by the alphaproteobacterium Rhodobacter capsulatus, named R. capsulatus GTA (RcGTA), is currently the best ...
nov., a novel alpha-proteobacterium". The Journal of general and applied microbiology. 50 (5): 249-54. PMID 15747229. Lee, H.-W ...
nov., a novel alpha-proteobacterium". The Journal of general and applied microbiology. 50 (5): 249-54. PMID 15747229. Jjemba, ...
nov., an alphaproteobacterium from compost". International Journal of Systematic and Evolutionary Microbiology. 62 (Pt 12): ...
nov., an acetic acid bacterium in the alpha-Proteobacteria". J Gen Appl Microbiol. 50 (3): 159-67. doi:10.2323/jgam.50.159. ...
The Rhizobiales are an order of Gram-negative Alphaproteobacteria. The rhizobia, which fix nitrogen and are symbiotic with ... "Multiphyletic origins of methylotrophy in Alphaproteobacteria, exemplified by comparative genomics of Lake Washington isolates ...
nov., an acetic acid bacterium in the alpha-proteobacteria". Int J Syst Evol Microbiol. 51 (Pt 2): 559-63. doi:10.1099/00207713 ...
Lo N, Beninati T, Sacchi L, Bandi C (2006b). An alpha-proteobacterium invades the mitochondria of the tick Ixodes ricinus. In ... Beninati, T.; Lo, N.; Sacchi, L.; Genchi, C.; Noda, H.; Bandi, C. (2004). "A novel alpha-proteobacterium resides in the ... Rickettsiales), an ecologically widespread clade of intracellular alphaproteobacteria". Applied and Environmental Microbiology ... "New rRNA gene-based phylogenies of the Alphaproteobacteria provide perspective on major groups, mitochondrial ancestry and ...
nov., an alphaproteobacterium isolated from soil". International Journal of Systematic and Evolutionary Microbiology. 56 (Pt 10 ... nov., an alphaproteobacterium isolated from soil". International Journal of Systematic and Evolutionary Microbiology. 56 (Pt 10 ...
It showed that the beta-Proteobacteria accounted for between 26.4 and 71.5%, the alpha-Proteobacteria 2.3-10.6%, the gamma- ...
Alphaproteobacteria is a class of bacteria in the phylum Proteobacteria (See also bacterial taxonomy). Its members are highly ... "Alphaproteobacteria". List of Prokaryotic names with Standing in Nomenclature (LPSN). Archived from the original on 2013-01-27 ... The Alphaproteobacteria is a diverse taxon and comprises several phototrophic genera, several genera metabolising C1-compounds ... nov.) at the base of the Alphaproteobacteria. Int J Syst Evol Microbiol. doi:10.1099/ijs.0.038927-0 Gupta RS (2005). "Protein ...
Your basket is currently empty. i ,p>When browsing through different UniProt proteins, you can use the basket to save them, so that you can back to find or analyse them later.,p>,a href=/help/basket target=_top>More...,/a>,/p> ...
"Genome Sequence of Strain IMCC14465, Isolated from the East Sea, Belonging to the PS1 Clade of Alphaproteobacteria.". Yang S.J. ... This proteome is part of the alpha proteobacterium IMCC14465 pan proteome (fasta) ...
Members of the Cyanobacteria and Alphaproteobacteria were identified as potential keystone taxa, and exhibited numerous ... Members of the Cyanobacteria and Alphaproteobacteria were identified as potential keystone taxa, and exhibited numerous ... with significantly higher levels of Cyanobacteria and Alphaproteobacteria in potentially-active hypoliths. Several phyla known ... with significantly higher levels of Cyanobacteria and Alphaproteobacteria in potentially-active hypoliths. Several phyla known ...
... the genomes of 92 Alphaproteobacteria strains were analyzed with a fuzzy orthologs-species detection approach. This showed that ... Alphaproteobacteria show a great versatility in adapting to a broad range of environments and lifestyles, with the association ... Alphaproteobacteria show a great versatility in adapting to a broad range of environments and lifestyles, with the association ... Plant-Bacteria Association and Symbiosis: Are There Common Genomic Traits in Alphaproteobacteria?. Francesco Pini †. ...
Histidine kinase derived PhyT-type regulators are found also in other alphaproteobacteria, implying that the identified ... in alphaproteobacteria represents an essential feature for survival in stressful, constantly changing habitats. A variety of ...
A deeper survey of Alphaproteobacteria by 16S rRNA gene amplicon sequencing reveals a high diversity with Acidocella, ... A deeper survey of Alphaproteobacteria by 16S rRNA gene amplicon sequencing reveals a high diversity with Acidocella, ... Alphaproteobacteria were the main colonizers inside the hyaline cells of Sphagnum leaves. ... of Sphagnum-associated microbial communities were characterized by high diversity and abundance of Alphaproteobacteria but ...
Regulatable Vectors for Environmental Gene Expression in Alphaproteobacteria Adrian J. Tett, Steven J. Rudder, Alexandre ... Regulatable Vectors for Environmental Gene Expression in Alphaproteobacteria Adrian J. Tett, Steven J. Rudder, Alexandre ... Regulatable Vectors for Environmental Gene Expression in Alphaproteobacteria Adrian J. Tett, Steven J. Rudder, Alexandre ... Regulatable Vectors for Environmental Gene Expression in Alphaproteobacteria Message Subject (Your Name) has forwarded a page ...
... a Representative of the SAR116 Clade in the Alphaproteobacteria. Hyun-Myung Oh, Kae Kyoung Kwon, Ilnam Kang, Sung Gyun Kang, ... the first cultured representative of the SAR116 clade in the Alphaproteobacteria, is reported here. The genome contains genes ... a Representative of the SAR116 Clade in the Alphaproteobacteria ... a Representative of the SAR116 Clade in the Alphaproteobacteria ... a Representative of the SAR116 Clade in the Alphaproteobacteria ...
The genome sizes of the Alphaproteobacteria range between 1 Mb and 10 Mb. This group is also connected to the origin of the ... By placing the comparison in the context of the evolution of the Alphaproteobacteria, we found that none of the measures of ... Comparative and Phylogenomic Evidence that the Alphaproteobacterium HIMB59 is not a Member of the Oceanic SAR11 Clade. Viklund ... SAR11 is a globally abundant group of Alphaproteobacteria in the oceans that is taxonomically not well defined. It has been ...
2. Abundance and diveristy of Alphaproteobacteria in the Southern Ocean: the dark side of SAR11. Open this publication in new ... Alphaproteobacteria represented by lineages such as SAR11 and Roseobacter are ubiquitous and often dominant in marine ... bacterial community dynamics, Alphaproteobacteria, SAR11, LD12, Southern Ocean, lakes National Category Ecology Research ... Southern Ocean, Alphaproteobacteria, SAR11, Roseobacter, community composition, solar radiation National Category Ecology ...
However, Rhodospirillum rubrum came as close to mitochondria as any alpha-proteobacterium investigated. This prompted a search ... A genome phylogeny for mitochondria among alpha-proteobacteria and a predominantly eubacterial ancestry of yeast nuclear genes. ...
Genome Sequence of Fulvimarina pelagi HTCC2506T, a Mn(II)-Oxidizing Alphaproteobacterium Possessing an Aerobic Anoxygenic ... Genome Sequence of Fulvimarina pelagi HTCC2506T, a Mn(II)-Oxidizing Alphaproteobacterium Possessing an Aerobic Anoxygenic ... Genome Sequence of Fulvimarina pelagi HTCC2506T, a Mn(II)-Oxidizing Alphaproteobacterium Possessing an Aerobic Anoxygenic ... Genome Sequence of Fulvimarina pelagi HTCC2506T, a Mn(II)-Oxidizing Alphaproteobacterium Possessing an Aerobic Anoxygenic ...
nov., an endophyte from a pine tree of the class Alphaproteobacteria, emended description of Geminicoccus roseus, and proposal ... nov., an endophyte from a pine tree of the class Alphaproteobacteria, emended description of Geminicoccus roseus, and proposal ...
... which is extensively present within Alphaproteobacteria, and some secondary chromosomes of the Rhizobiales have the particular ... gene transfer and diverse functional constrains within a common replication-partitioning system in Alphaproteobacteria: the ...
... rRNA gene sequencing revealed that the novel strain affiliated to the family Hyphomonadaceae of the class Alphaproteobacteria ... nov., a new alphaproteobacterium isolated from the Pacific green alga Ulva fenestrata. *Olga I. Nedashkovskaya, Andrey D. ... nov., a new alphaproteobacterium isolated from the Pacific green alga Cladophora stimpsoni, and emended descriptions of the ... nov., a new alphaproteobacterium isolated from the Pacific green alga Cladophora stimpsoni, and emended descriptions of the ...
Strain LD81T has a unique phylogenetic position, not fitting any of the known families of the Alphaproteobacteria. The 16S rRNA ... due to its distant phylogenetic position from all other alphaproteobacteria, strain LD81T (=NCIMB 14374T =JCM 14845T) is ... A novel alphaproteobacterium, strain LD81T, was isolated from the marine macroalga Laminaria saccharina. The bacterium is ... gene sequence revealed a distant relationship to species of several orders of the Alphaproteobacteria, with less than 90 % ...
... an aerobic marine alphaproteobacterium, was isolated from Mediterranean seawater at Malvarrosa beach, Valencia, Spain. The ... nov., an aerobic alphaproteobacterium isolated from surface seawater * Teresa Lucena1, María J. Pujalte1, María A. Ruvira1, ... Strain MD5T, an aerobic marine alphaproteobacterium, was isolated from Mediterranean seawater at Malvarrosa beach, Valencia, ... nov., an aerobic alphaproteobacterium isolated from surface seawater. Int J Syst Evol Microbiol 62, 844 (2012); https://doi.org ...
... Click on an image to view larger version & data in a new window ... nov., a marine bacterium that forms a deep branch in the alpha-Proteobacteria. Int. J. Syst. Evol. Microbiol. 53:1031-1036. ... Genome evolution within the alpha Proteobacteria: why do some bacteria not possess plasmids and others exhibit more than one ... alpha Proteobacteria. Version 10 March 2006 (temporary). http://tolweb.org/alpha_Proteobacteria/2303/2006.03.10 in The Tree of ...
... the clade in which strains SY3-15T and SY3-13 located was separated from the clade of the other orders of Alphaproteobacteria ... methods showed that the strains constituted a deep and separated branch from other families of Alphaproteobacteria , and the ... nov., a novel alphaproteobacterium isolated from deep seawater. Int J Syst Evol Microbiol 2017;67:4024-4031 [CrossRef][PubMed] ... nov., a thermotolerant alphaproteobacterium isolated from a hot spring. Int J Syst Evol Microbiol 2014;64:2805-2811 [CrossRef][ ...
Alphaproteobacteria. Alphaproteobacteria #REDIRECTmw:Help:Magic words#Other. This page is a soft redirect. colspan=2 style=" ... This page is a soft redirect. Alphaproteobacteria. Garrity et al. 2006 #REDIRECTmw:Help:Magic words#Other. This page is a soft ... Alphaproteobacteria is a class of bacteria in the phylum Proteobacteria (See also bacterial taxonomy).[3] Its members are ... The Class Alphaproteobacteria is divided into three subclasses Magnetococcidae, Rickettsidae and Caulobacteridae.[2] The basal ...
Alphaproteobacteria sp. (TSD-74) TSD-74 Organism Alphaproteobacteria sp. Strain Designations: RKSG073 ...
Identification and characterization of Alphaproteobacteria phages. Grant number: 0090/IP1/2015/73. Funded by: ... As a result of the project a database of Alphaproteobacteria phages will be also created. Within this database information ... The project assumes identification of functional, inducible bacteriophages within a pool of Alphaproteobacteria from the ... available collection, as well as in silico defining of prophages present in various genomes of Alphaproteobacteria. It will be ...
RNAseq analysis of alpha-proteobacterium Gluconobacter oxydans 621H. Kranz A, Busche T, Vogel A, Usadel B, Kalinowski J, Bott M ... Kranz, A., Busche, T., Vogel, A., Usadel, B., Kalinowski, J., Bott, M., and Polen, T. (2018). RNAseq analysis of alpha- ... Kranz, A., Busche, T., Vogel, A., Usadel, B., Kalinowski, J., Bott, M., Polen, T.: RNAseq analysis of alpha-proteobacterium ... Kranz, A., Busche, T., Vogel, A., Usadel, B., Kalinowski, J., Bott, M., & Polen, T. (2018). RNAseq analysis of alpha- ...
- The Prokaryotes - Alphaproteobacteria and Betaproteobacteria , 4th ed. (microbiologyresearch.org)
- [ 6 ] [ 9 ] Análises filoxenéticas e indeis conservados en gran cantidade doutras proteínas fornecen evidencias de que as Alphaproteobacteria se ramificaron antes ca moitos outros filos e clases de bacterias, agás as Betaproteobacteria e Gammaproteobacteria . (wikipedia.org)
- Wolbachia (Alphaproteobacteria, Rickettsiales) is an intraovarially transmitted symbiont of insects able to exert striking phenotypes, including reproductive manipulations and pathogen blocking. (brookes.ac.uk)
- Phylogenetic analysis of 16S rRNA gene sequences showed that this strain represented a distinct lineage within the Roseobacter clade of family Rhodobacteracea within Alphaproteobacteria. (ufz.de)
- Strain LD81 T has a relatively low DNA G+C content (51.1 mol%) and, due to its distant phylogenetic position from all other alphaproteobacteria, strain LD81 T (=NCIMB 14374 T =JCM 14845 T ) is considered as the type strain of a novel species within a new genus, for which the name Kiloniella laminariae gen. nov., sp. (microbiologyresearch.org)
- Strain DFL-11 T (= DSM 17067 = NCIMB 14079) is the type strain of Labrenzia alexandrii , a marine member of the Rhodobacteraceae ( Rhodobacterales , Alphaproteobacteria ) [ 1 ]. (standardsingenomics.org)
- Debido ás súas propiedades simbióticas, os investigadores usan frecuentemente as Alphaproteobacteria do xénero Agrobacterium nas técnicas de transferencia de xenes alleos a xenomas de plantas, e teñen tamén moitas outras aplicacións biotecnolóxicas. (wikipedia.org)
- The aim of the project is to determine and characterize a pool of lysogenic and lytic phages (and prophage sequences) of Alphaproteobacteria . (ddlemb.com)
- A wider sampling of alphaproteobacteria and improved techniques for analyzing DNA sequences seemed to suggest that our previous hypotheses about the origin of mitochondria were wrong. (physicsforums.com)
- 2005. The hierarchical system of the Alphaproteobacteria : description of Hyphomonadaceae fam. (tolweb.org)
- But a new analysis, published today (April 25) in Nature , suggests that mitochondria are at best distant cousins to known alphaproteobacteria lineages, and not descendents as previously thought. (physicsforums.com)
- The Class Alphaproteobacteria is divided into three subclasses Magnetococcidae , Rickettsidae and Caulobacteridae . (omicsgroup.org)
- nov., an endophyte from a pine tree of the class Alphaproteobacteria, emended description of Geminicoccus roseus, and proposal of Geminicoccaceae fam. (doe.gov)
- The potentially active and total hypolithic communities differed in their composition and diversity, with significantly higher levels of Cyanobacteria and Alphaproteobacteria in potentially active hypoliths. (frontiersin.org)
- Members of the Cyanobacteria and Alphaproteobacteria were identified as potential keystone taxa, and exhibited numerous positive co-occurrences with other microbes, suggesting that these groups might have important roles in maintaining network topological structure despite their low abundance. (frontiersin.org)
- Genomic blueprints of sponge-prokaryote symbiosis are shared by low abundant and cultivatable Alphaproteobacteria. (nature.com)
- 2018) Deep mitochondrial origin outside the sampled alphaproteobacteria. (physicsforums.com)
- The Alphaproteobacteria is a diverse taxon and comprises several phototrophic genera, several genera metabolising C1-compounds (e.g. (wikipedia.org)
- NifH libraries of Sphagnum -associated microbial communities were characterized by high diversity and abundance of Alphaproteobacteria but contained also diverse amplicons of other taxa, e.g. (frontiersin.org)
- nov., a marine bacterium forming a deep branch in the Alphaproteobacteria, and proposal of Minwuiaceae fam. (microbiologyresearch.org)
- Among them, 15 ORFs were homologues of genes in another siphovirus ΦJL001 that infects an uncharacterized marine sponge-associated alphaproteobacterium, JL001 [ 23 ] (Figure 1 , indicated by grey shadows). (biomedcentral.com)
- Similarity was confirmed for colonization patterns obtained by fluorescence in situ hybridization (FISH) coupled with confocal laser scanning microscopy (CLSM): Alphaproteobacteria were the main colonizers inside the hyaline cells of Sphagnum leaves. (frontiersin.org)