Computer Assisted Classification and Identification of Actinomycetes
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Accuprobe Mycobacterium Avium Complex Culture
non-hybridized and hybridized probe. The labeled DNA:RNA hybrids are measured in a Hologic luminometer. A positive result is a luminometer reading equal to or greater than the cut-off. A value below this cut-off is AccuProbe® a negative result. REAGENTS Note: For information on any hazard and precautionary statements that MYCOBACTERIUM AVIUM may be associated with reagents, refer to the Safety Data Sheet Library at www.hologic.com/sds. COMPLEX CULTURE Reagents for the ACCUPROBE MYCOBACTERIUM AVIUM COMPLEX IDENTIFICATION TEST CULTURE IDENTIFICATION TEST are provided in three separate reagent kits: INTENDED USE The ACCUPROBE MYCOBACTERIUM AVIUM COMPLEX CULTURE ACCUPROBE MYCOBACTERIUM AVIUM COMPLEX PROBE KIT IDENTIFICATION TEST is a rapid DNA probe test which utilizes the Probe Reagent. (4 x 5 tubes) technique of nucleic acid hybridization for the identification of Mycobacterium avium complex Mycobacterium avium complex (M. avium complex) isolated from culture. Lysing Reagent. (1 x 20 tubes) Glass beads and buffer SUMMARY AND EXPLANATION OF THE TEST Infections caused by members of the M. avium complex are the most ACCUPROBE CULTURE IDENTIFICATION REAGENT KIT common mycobacterial infections associated with AIDS and other Reagent 1 (Lysis Reagent). 1 x 10 mL immunocompromised patients (7,15). The incidence of M. avium buffered solution containing 0.04% sodium azide complex as a clinically significant pathogen in cases of chronic pulmonary disease is also increasing (8,17). Recently, several Reagent 2 (Hybridization Buffer). 1 x 10 mL laboratories have reported that the frequency of isolating M. avium buffered solution complex is equivalent to or greater than the frequency of isolating M. -
Infection at the Wildlife-Livestock-Human Interface: Three Systems
Infection at the Wildlife- livestock-human interface: three systems Thesis submitted in accordance with the requirements of the University of Liverpool for the degree of Doctor in Philosophy by Elsa Sandoval Barron 12/4/2017 Abstract Zoonoses involve interactions between at least three species: the pathogen and two hosts, one of which is human and the other a non-human (vertebrate) animal. More than 60% of human infectious diseases are zoonotic, and many have a wildlife host. Urbanisation and human population growth have increased the demand for food and land resources, which have increased interaction between humans, domestic animals and wildlife and thus the potential for cross-species transmission of infections. Most studies of such systems take place in tropical and developing countries where population change and biodiversity makes the emergence of high profile infections (eg Ebola and SARS) more likely. This study, however, focuses on four well known infections within the UK: bovine tuberculosis, water-borne cryptosporidiosis and giardiasis, and campylobacteriosis. The aim of this study was to investigate, using four infectious diseases of economic and public health importance in the UK as study systems, the role of wildlife in the epidemiology of multihost, zoonotic infections. Bovine tuberculosis (bTB) is an important zoonosis in many parts of the world, but human infection is rare in the UK owing to a policy of ‘test and cull’ in cattle and pasteurisation of milk. However, there has been an epidemic of bTB in British cattle in recent decades, the control of which is complicated by infection in badgers (Meles meles) and controversy over the control of wildlife infection. -
Responses to Ecopollutants and Pathogenization Risks of Saprotrophic Rhodococcus Species
pathogens Review Responses to Ecopollutants and Pathogenization Risks of Saprotrophic Rhodococcus Species Irina B. Ivshina 1,2,*, Maria S. Kuyukina 1,2 , Anastasiia V. Krivoruchko 1,2 and Elena A. Tyumina 1,2 1 Perm Federal Research Center UB RAS, Institute of Ecology and Genetics of Microorganisms UB RAS, 13 Golev Str., 614081 Perm, Russia; [email protected] (M.S.K.); [email protected] (A.V.K.); [email protected] (E.A.T.) 2 Department of Microbiology and Immunology, Perm State University, 15 Bukirev Str., 614990 Perm, Russia * Correspondence: [email protected]; Tel.: +7-342-280-8114 Abstract: Under conditions of increasing environmental pollution, true saprophytes are capable of changing their survival strategies and demonstrating certain pathogenicity factors. Actinobacteria of the genus Rhodococcus, typical soil and aquatic biotope inhabitants, are characterized by high ecological plasticity and a wide range of oxidized organic substrates, including hydrocarbons and their derivatives. Their cell adaptations, such as the ability of adhering and colonizing surfaces, a complex life cycle, formation of resting cells and capsule-like structures, diauxotrophy, and a rigid cell wall, developed against the negative effects of anthropogenic pollutants are discussed and the risks of possible pathogenization of free-living saprotrophic Rhodococcus species are proposed. Due to universal adaptation features, Rhodococcus species are among the candidates, if further anthropogenic pressure increases, to move into the group of potentially pathogenic organisms with “unprofessional” parasitism, and to join an expanding list of infectious agents as facultative or occasional parasites. Citation: Ivshina, I.B.; Kuyukina, Keywords: actinobacteria; Rhodococcus; pathogenicity factors; adhesion; autoaggregation; colonization; M.S.; Krivoruchko, A.V.; Tyumina, defense against phagocytosis; adaptive strategies E.A. -
MYCOBACTERIA.Pdf
MYCOBACTERIA Mycobacteria are widespread organisms, typically living in and food sources. Tuberculosis and the leprosy organisms are obligate parasites and are not found as free-living members of the genus. Mycobacteria are aerobic and nonmotile bacteria (except for the species Mycobacterium marinum, which has been shown to be motile within macrophages) that are characteristically acid fast. Mycobacteria have an outer membrane. They do not have capsules, and most do not form endospores. The distinguishing characteristic of all Mycobacterium species is that the cell wall is thicker than in many other bacteria, which is hydrophobic, waxy, and rich in mycolic acids/mycolates. The cell wall consists of the hydrophobic mycolate layer and a peptidoglycan layer held together by a polysaccharide, arabinogalactan. The cell wall makes a substantial contribution to the hardiness of this genus. The biosynthetic pathways of cell wall components are potential targets for new drugs for tuberculosis. Fig. 1 Mycobacterial cell wall: 1-outer lipids, 2-mycolic acid, 3-polysaccharides (arabinogalactan), 4-peptidoglycan, 5-plasma membrane, 6-lipoarabinomannan (LAM), 7- phosphatidylinositol mannoside, 8-cell wall skeleton. NONTUBERCULOUS MYCOBACTERIA – RUNYON CLASSIFICATION Runyon classification is a system of identifying mycobacteria on the basis of pigmentation and growth condition of the organisms. The Runyon classification of nontuberculous mycobacteria based on the rate of growth, production of yellow pigment and whether this pigment was produced in the dark or only after exposure to light. It was introduced by Ernest Runyon in 1959 (Fig. 111). On these bases, the nontuberculous mycobacteria are divided into four groups: Photochromogens (Group I) - produce nonpigmented colonies when grown in the dark and pigmented colonies only after exposure to light and reincubation (1M. -
Streptococcus Pneumoniae Capsular Polysaccharide Is Linked to Peptidoglycan Via a Direct Glycosidic Bond to Β-D-N-Acetylglucosamine
Streptococcus pneumoniae capsular polysaccharide is linked to peptidoglycan via a direct glycosidic bond to β-D-N-acetylglucosamine Thomas R. Larsona and Janet Yothera,1 aDepartment of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294-2170 Edited by Emil C. Gotschlich, The Rockefeller University, New York, NY, and approved April 14, 2017 (received for review December 20, 2016) For many bacteria, including those important in pathogenesis, (Und-P). In S. pneumoniae serotype 2 CPS, Glcp-1-P is trans- expression of a surface-localized capsular polysaccharide (CPS) can ferred from UDP-Glcp (11), and this is followed by addition of be critical for survival in host environments. In Gram-positive the remaining sugars (12, 13) to form the complete repeat unit bacteria, CPS linkage is to either the cytoplasmic membrane or the (Fig. 1). Und-P-P-oligosaccharide repeat units are translocated cell wall. Despite the frequent occurrence and essentiality of these to the outer face of the cytoplasmic membrane by Wzx and po- polymers, the exact nature of the cell wall linkage has not been lymerized into high molecular weight (MW) polysaccharide by described in any bacterial species. Using the Streptococcus pneu- Wzy. Growth occurs at the reducing end, with single or multiple moniae serotype 2 CPS, which is synthesized by the widespread repeat units being transferred en bloc from Und-P-P to an ac- Wzy mechanism, we found that linkage occurs via the reducing ceptor Und-P-P-oligosaccharide repeat unit. Hydrolysis of the β N- end glucose of CPS and the -D- acetylglucosamine (GlcNAc) res- donor Und-P-P that remains after transfer yields Und-P, which is idues of peptidoglycan (PG). -
Actinomycesspp & Nocardiaspp
PLUMB’S THERAPEUTICS BRIEF h PATHOGEN PROFILE h PEER REVIEWED Actinomyces spp & Nocardia spp J. Scott Weese, DVM, DVSc, DACVIM University of Guelph Actinomyces spp and Nocardia spp are members of class Acti- Nocardia spp nobacteria, which can cause opportunistic infections in dogs, The Nocardia genus contains more than 30 saprophytic species cats, and other species. Both can cause pyogranulomatous or that are widely, if not ubiquitously, disseminated in the environ- suppurative disease that is often slowly progressing and chal- ment. Disease occurs following inoculation of the bacterium into lenging to diagnose; however, some differences in organism tissue or via inhalation. and characteristics exist (Table 1, next page). The incidence of h Nocardia spp are regionally variable, with higher rates of disease caused by either is undefined and likely low. infection in dry, dusty, and windy regions (eg, southwestern United States, parts of Australia). Actinomyces spp h Nocardiosis is classically divided into 3 clinical forms: Many different species are present, and taxonomy continues to pulmonary, disseminated (systemic), and cutaneous/ change; some species previously known as Actinomyces have subcutaneous.11-15 been reclassified in other genera, such as Arcanobacterium spp • Clinical presentations are as would be expected with pul- and Trueperella spp. Regardless, disease aspects remain monary, systemic, or cutaneous infections. Pulmonary or unchanged. Commonly found as part of the oral, GI, and genital cutaneous disease can progress to disseminated disease. microbiotas,1-3 Actinomyces spp and related genera are of lim- ited virulence unless inoculated into tissue (eg, via bites, foreign Diagnosis bodies, or trauma). Early diagnosis may be missed. -
Tales of Diversity: Genomic and Morphological Characteristics of Forty-Six Arthrobacter Phages
RESEARCH ARTICLE Tales of diversity: Genomic and morphological characteristics of forty-six Arthrobacter phages Karen K. Klyczek1☯, J. Alfred Bonilla1☯, Deborah Jacobs-Sera2☯, Tamarah L. Adair3, Patricia Afram4, Katherine G. Allen5, Megan L. Archambault1, Rahat M. Aziz6, Filippa G. Bagnasco3, Sarah L. Ball7, Natalie A. Barrett8, Robert C. Benjamin6, Christopher J. Blasi9, Katherine Borst10, Mary A. Braun10, Haley Broomell4, Conner B. Brown5, Zachary S. Brynell3, Ashley B. Bue1, Sydney O. Burke3, William Casazza10, Julia A. Cautela8, Kevin Chen10, Nitish S. Chimalakonda3, Dylan Chudoff4, Jade A. Connor3, Trevor S. Cross4, Kyra N. Curtis3, Jessica A. Dahlke1, Bethany M. Deaton3, Sarah J. Degroote1, Danielle M. DeNigris8, Katherine C. DeRuff9, Milan Dolan5, David Dunbar4, Marisa a1111111111 S. Egan8, Daniel R. Evans10, Abby K. Fahnestock3, Amal Farooq6, Garrett Finn1, a1111111111 Christopher R. Fratus3, Bobby L. Gaffney5, Rebecca A. Garlena2, Kelly E. Garrigan8, Bryan 3 5 2 4 a1111111111 C. Gibbon , Michael A. Goedde , Carlos A. Guerrero Bustamante , Melinda Harrison , 8 11 10 6 a1111111111 Megan C. Hartwell , Emily L. Heckman , Jennifer Huang , Lee E. Hughes , Kathryn 8 8 10 3 a1111111111 M. Hyduchak , Aswathi E. Jacob , Machika Kaku , Allen W. Karstens , Margaret A. Kenna11, Susheel Khetarpal10, Rodney A. King5, Amanda L. Kobokovich9, Hannah Kolev10, Sai A. Konde3, Elizabeth Kriese1, Morgan E. Lamey8, Carter N. Lantz3, Jonathan S. Lapin2, Temiloluwa O. Lawson1, In Young Lee2, Scott M. Lee3, Julia Y. Lee- Soety8, Emily M. Lehmann1, Shawn C. London8, A. Javier Lopez10, Kelly C. Lynch5, Catherine M. Mageeney11, Tetyana Martynyuk8, Kevin J. Mathew6, Travis N. Mavrich2, OPEN ACCESS Christopher M. McDaniel5, Hannah McDonald10, C. Joel McManus10, Jessica E. -
Nocardioides Zeicaulis Sp. Nov., an Endophyte Actinobacterium of Maize Peter Ka¨Mpfer,1 Stefanie P
International Journal of Systematic and Evolutionary Microbiology (2016), 66, 1869–1874 DOI 10.1099/ijsem.0.000959 Nocardioides zeicaulis sp. nov., an endophyte actinobacterium of maize Peter Ka¨mpfer,1 Stefanie P. Glaeser,1 John A. McInroy2 and Hans-Ju¨rgen Busse3 Correspondence 1Institut fu¨r Angewandte Mikrobiologie, Justus-Liebig-Universita¨t Giessen, D-35392 Giessen, Peter Ka¨mpfer Germany peter.kaempfer@ 2Entomology and Plant Pathology Dept., Auburn University, Alabama, AL 36849, USA umwelt.uni-giessen.de 3Abteilung fu¨r Klinische Mikrobiologie und Infektionsbiologie, Institut fu¨r Mikrobiologie, Veterina¨rmedizinische Universita¨t Wien, A-1210 Wien, Austria A Gram-stain-positive, aerobic organism was isolated as an endophyte from the stem tissue of healthy maize (Zea mays) and investigated in detail for its taxonomic position. On the basis of the 16S rRNA gene sequence analysis, strain JM-601T was shown to be most closely related to Nocardioides alpinus (98.3 %), and Nocardioides ganghwensis (98.0 %). The 16S rRNA gene sequence similarity to all other species of the genus Nocardioides was j98.0 %. The diagnostic diamino acid of the peptidoglycan was LL-diaminopimelic acid. The major T quinone of strain JM-601 was menaquinone MK-8(H4). The polar lipid profile revealed the major components diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, phosphatidylcholine and an unidentified phospholipid. The polyamine pattern contained predominantly spermine and moderate amounts of spermidine. In the fatty acid profile, iso-C16 : 0,C17 : 1v8c and 10-methyl C17 : 0 were present in major amounts. All these data support the allocation of the strain to the genus Nocardioides. The results of physiological and biochemical characterization allow in addition a phenotypic differentiation of strain JM-601T from N. -
Assessing Diversity and Biogeography of Aerobic
Assessing diversity and biogeography of aerobic anoxygenic phototrophic bacteria in surface waters of the Atlantic and Pacific Oceans using the Global Ocean Sampling expedition metagenomes Natalya Yutin, Marcelino Suzuki, Hanno Teeling, Marc Weber, J Venter, Douglas Rusch, Oded Béjà To cite this version: Natalya Yutin, Marcelino Suzuki, Hanno Teeling, Marc Weber, J Venter, et al.. Assessing diversity and biogeography of aerobic anoxygenic phototrophic bacteria in surface waters of the Atlantic and Pacific Oceans using the Global Ocean Sampling expedition metagenomes. Environmental Microbiology, Society for Applied Microbiology and Wiley-Blackwell, 2007, 9, pp.1464 - 1475. 10.1111/j.1462- 2920.2007.01265.x. hal-03012626 HAL Id: hal-03012626 https://hal.archives-ouvertes.fr/hal-03012626 Submitted on 18 Nov 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. emi_1265 Environmental Microbiology (2007) doi:10.1111/j.1462-2920.2007.01265.x Assessing diversity and biogeography of aerobic anoxygenic phototrophic bacteria in surface waters of the Atlantic and Pacific Oceans using the Global Ocean Sampling expedition metagenomes Natalya Yutin,1 Marcelino T. Suzuki,2* phs were detected using various techniques ranging Hanno Teeling,3 Marc Weber,3 J. -
Mapping the Diversity of Microbial Lignin Catabolism: Experiences from the Elignin Database
Applied Microbiology and Biotechnology (2019) 103:3979–4002 https://doi.org/10.1007/s00253-019-09692-4 MINI-REVIEW Mapping the diversity of microbial lignin catabolism: experiences from the eLignin database Daniel P. Brink1 & Krithika Ravi2 & Gunnar Lidén2 & Marie F Gorwa-Grauslund1 Received: 22 December 2018 /Revised: 6 February 2019 /Accepted: 9 February 2019 /Published online: 8 April 2019 # The Author(s) 2019 Abstract Lignin is a heterogeneous aromatic biopolymer and a major constituent of lignocellulosic biomass, such as wood and agricultural residues. Despite the high amount of aromatic carbon present, the severe recalcitrance of the lignin macromolecule makes it difficult to convert into value-added products. In nature, lignin and lignin-derived aromatic compounds are catabolized by a consortia of microbes specialized at breaking down the natural lignin and its constituents. In an attempt to bridge the gap between the fundamental knowledge on microbial lignin catabolism, and the recently emerging field of applied biotechnology for lignin biovalorization, we have developed the eLignin Microbial Database (www.elignindatabase.com), an openly available database that indexes data from the lignin bibliome, such as microorganisms, aromatic substrates, and metabolic pathways. In the present contribution, we introduce the eLignin database, use its dataset to map the reported ecological and biochemical diversity of the lignin microbial niches, and discuss the findings. Keywords Lignin . Database . Aromatic metabolism . Catabolic pathways -
Aestuariimicrobium Ganziense Sp. Nov., a New Gram-Positive Bacterium Isolated from Soil in the Ganzi Tibetan Autonomous Prefecture, China
Aestuariimicrobium ganziense sp. nov., a new Gram-positive bacterium isolated from soil in the Ganzi Tibetan Autonomous Prefecture, China Yu Geng Yunnan University Jiang-Yuan Zhao Yunnan University Hui-Ren Yuan Yunnan University Le-Le Li Yunnan University Meng-Liang Wen yunnan university Ming-Gang Li yunnan university Shu-Kun Tang ( [email protected] ) Yunnan Institute of Microbiology, Yunnan University https://orcid.org/0000-0001-9141-6244 Research Article Keywords: Aestuariimicrobium ganziense sp. nov., Chemotaxonomy, 16S rRNA sequence analysis Posted Date: February 11th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-215613/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Archives of Microbiology on March 12th, 2021. See the published version at https://doi.org/10.1007/s00203-021-02261-2. Page 1/11 Abstract A novel Gram-stain positive, oval shaped and non-agellated bacterium, designated YIM S02566T, was isolated from alpine soil in Shadui Towns, Ganzi County, Ganzi Tibetan Autonomous Prefecture, Sichuan Province, PR China. Growth occurred at 23–35°C (optimum, 30°C) in the presence of 0.5-4 % (w/v) NaCl (optimum, 1%) and at pH 7.0–8.0 (optimum, pH 7.0). The phylogenetic analysis based on 16S rRNA gene sequence revealed that strain YIM S02566T was most closely related to the genus Aestuariimicrobium, with Aestuariimicrobium kwangyangense R27T and Aestuariimicrobium soli D6T as its closest relative (sequence similarities were 96.3% and 95.4%, respectively). YIM S02566T contained LL-diaminopimelic acid in the cell wall. -
Exploring the Potential of Antibiotic Production from Rare Actinobacteria by Whole-Genome Sequencing and Guided MS/MS Analysis
fmicb-11-01540 July 27, 2020 Time: 14:51 # 1 ORIGINAL RESEARCH published: 15 July 2020 doi: 10.3389/fmicb.2020.01540 Exploring the Potential of Antibiotic Production From Rare Actinobacteria by Whole-Genome Sequencing and Guided MS/MS Analysis Dini Hu1,2, Chenghang Sun3, Tao Jin4, Guangyi Fan4, Kai Meng Mok2, Kai Li1* and Simon Ming-Yuen Lee5* 1 School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China, 2 Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, China, 3 Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 4 Beijing Genomics Institute, Shenzhen, China, 5 State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China Actinobacteria are well recognized for their production of structurally diverse bioactive Edited by: secondary metabolites, but the rare actinobacterial genera have been underexploited Sukhwan Yoon, for such potential. To search for new sources of active compounds, an experiment Korea Advanced Institute of Science combining genomic analysis and tandem mass spectrometry (MS/MS) screening and Technology, South Korea was designed to isolate and characterize actinobacterial strains from a mangrove Reviewed by: Hui Li, environment in Macau. Fourteen actinobacterial strains were isolated from the collected Jinan University, China samples. Partial 16S sequences indicated that they were from six genera, including Baogang Zhang, China University of Geosciences, Brevibacterium, Curtobacterium, Kineococcus, Micromonospora, Mycobacterium, and China Streptomyces. The isolate sp.01 showing 99.28% sequence similarity with a reference *Correspondence: rare actinobacterial species Micromonospora aurantiaca ATCC 27029T was selected for Kai Li whole genome sequencing.