Genome Sequence of the Fleming Strain of Micrococcus Luteus, A
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Kaistella Soli Sp. Nov., Isolated from Oil-Contaminated Soil
A001 Kaistella soli sp. nov., Isolated from Oil-contaminated Soil Dhiraj Kumar Chaudhary1, Ram Hari Dahal2, Dong-Uk Kim3, and Yongseok Hong1* 1Department of Environmental Engineering, Korea University Sejong Campus, 2Department of Microbiology, School of Medicine, Kyungpook National University, 3Department of Biological Science, College of Science and Engineering, Sangji University A light yellow-colored, rod-shaped bacterial strain DKR-2T was isolated from oil-contaminated experimental soil. The strain was Gram-stain-negative, catalase and oxidase positive, and grew at temperature 10–35°C, at pH 6.0– 9.0, and at 0–1.5% (w/v) NaCl concentration. The phylogenetic analysis and 16S rRNA gene sequence analysis suggested that the strain DKR-2T was affiliated to the genus Kaistella, with the closest species being Kaistella haifensis H38T (97.6% sequence similarity). The chemotaxonomic profiles revealed the presence of phosphatidylethanolamine as the principal polar lipids;iso-C15:0, antiso-C15:0, and summed feature 9 (iso-C17:1 9c and/or C16:0 10-methyl) as the main fatty acids; and menaquinone-6 as a major menaquinone. The DNA G + C content was 39.5%. In addition, the average nucleotide identity (ANIu) and in silico DNA–DNA hybridization (dDDH) relatedness values between strain DKR-2T and phylogenically closest members were below the threshold values for species delineation. The polyphasic taxonomic features illustrated in this study clearly implied that strain DKR-2T represents a novel species in the genus Kaistella, for which the name Kaistella soli sp. nov. is proposed with the type strain DKR-2T (= KACC 22070T = NBRC 114725T). [This study was supported by Creative Challenge Research Foundation Support Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF- 2020R1I1A1A01071920).] A002 Chitinibacter bivalviorum sp. -
Microbiota of Human Precolostrum and Its Potential Role As a Source Of
www.nature.com/scientificreports OPEN Microbiota of human precolostrum and its potential role as a source of bacteria to the infant mouth Received: 24 October 2018 Lorena Ruiz1,2, Rodrigo Bacigalupe3, Cristina García-Carral2,4, Alba Boix-Amoros3, Accepted: 2 April 2019 Héctor Argüello5, Camilla Beatriz Silva2,6, Maria de los Angeles Checa7, Alex Mira3 & Published: xx xx xxxx Juan M. Rodríguez 2 Human milk represents a source of bacteria for the initial establishment of the oral (and gut) microbiomes in the breastfed infant, however, the origin of bacteria in human milk remains largely unknown. While some evidence points towards a possible endogenous enteromammary route, other authors have suggested that bacteria in human milk are contaminants from the skin or the breastfed infant mouth. In this work 16S rRNA sequencing and bacterial culturing and isolation was performed to analyze the microbiota on maternal precolostrum samples, collected from pregnant women before delivery, and on oral samples collected from the corresponding infants. The structure of both ecosystems demonstrated a high proportion of taxa consistently shared among ecosystems, Streptococcus spp. and Staphylococcus spp. being the most abundant. Whole genome sequencing on those isolates that, belonging to the same species, were isolated from both the maternal and infant samples in the same mother-infant pair, evidenced that in 8 out of 10 pairs both isolates were >99.9% identical at nucleotide level. The presence of typical oral bacteria in precolostrum before contact with the newborn indicates that they are not a contamination from the infant, and suggests that at least some oral bacteria reach the infant’s mouth through breastfeeding. -
Laboratory Exercises in Microbiology: Discovering the Unseen World Through Hands-On Investigation
City University of New York (CUNY) CUNY Academic Works Open Educational Resources Queensborough Community College 2016 Laboratory Exercises in Microbiology: Discovering the Unseen World Through Hands-On Investigation Joan Petersen CUNY Queensborough Community College Susan McLaughlin CUNY Queensborough Community College How does access to this work benefit ou?y Let us know! More information about this work at: https://academicworks.cuny.edu/qb_oers/16 Discover additional works at: https://academicworks.cuny.edu This work is made publicly available by the City University of New York (CUNY). Contact: [email protected] Laboratory Exercises in Microbiology: Discovering the Unseen World through Hands-On Investigation By Dr. Susan McLaughlin & Dr. Joan Petersen Queensborough Community College Laboratory Exercises in Microbiology: Discovering the Unseen World through Hands-On Investigation Table of Contents Preface………………………………………………………………………………………i Acknowledgments…………………………………………………………………………..ii Microbiology Lab Safety Instructions…………………………………………………...... iii Lab 1. Introduction to Microscopy and Diversity of Cell Types……………………......... 1 Lab 2. Introduction to Aseptic Techniques and Growth Media………………………...... 19 Lab 3. Preparation of Bacterial Smears and Introduction to Staining…………………...... 37 Lab 4. Acid fast and Endospore Staining……………………………………………......... 49 Lab 5. Metabolic Activities of Bacteria…………………………………………….…....... 59 Lab 6. Dichotomous Keys……………………………………………………………......... 77 Lab 7. The Effect of Physical Factors on Microbial Growth……………………………... 85 Lab 8. Chemical Control of Microbial Growth—Disinfectants and Antibiotics…………. 99 Lab 9. The Microbiology of Milk and Food………………………………………………. 111 Lab 10. The Eukaryotes………………………………………………………………........ 123 Lab 11. Clinical Microbiology I; Anaerobic pathogens; Vectors of Infectious Disease….. 141 Lab 12. Clinical Microbiology II—Immunology and the Biolog System………………… 153 Lab 13. Putting it all Together: Case Studies in Microbiology…………………………… 163 Appendix I. -
Micrococcus Luteus (Schroeter 1872) Cohn 1872, and Desig- Nation of the Neotype Strain M
INTERNATIONAL JOURNAL of SYSTEMATIC BACTERIOLOGY Vol. 22, No. 4 October 1972, p. 218-223 Printed in U.S.A. Copyright 0 1972 International Association of Microbiological Societies Taxonomic Status of Micrococcus luteus (Schroeter 1872) Cohn 1872, and Desig- nation of the Neotype Strain M. KOCUR, ZDENA PkCOVA, and T. MARTINEC Czechoslovak Collection of Microorganisms, J. E. PurkynE University, Brno, Czechoslovakia An amended description of Micrococcus luteus (Schroeter 1872) Cohn 1872, at present a broad-based species characterized primarily on negative charact er- istics, is proposed on the basis of a taxonomic analysis of 30 strains. CCM 169 (= ATCC 4698) is designated a's the neotype strain of M. luteus. A large number of species of aerobic, diameter and arranged in tetrads and in catalase-positive, yellow-pigmented micrococci irregular clumps of tetrads. Strains CCM 248, have been described, but their incomplete 337, 1674, and 2494 formed packets and characterization has hindered their classifica- irregular clusters of packets. These strains also tion. Some of them are known as Micrococcus produced the largest cells (1.5 to 1.8 pm) of all luteus, M. flaws, M. lysodeikticus, Sarcina of those studied. None of the strains was motile lutea, and S. flava. At present only two of these or produced spores. are generally accepted: M. luteus and M. varians Cultural characteristics. Colonies of all of the (13, 21). strains were circular, convex, and smooth, with Although M. luteus is the type species of the either a glistening or a dull surface. Tetrad- and genus Micrococcus, it is not sufficiently de- packet-forming strains produced matted colo- fined. -
Kocuria (Micrococcus) and Cultivation Methods for Their Detection – Part 1
Kvasny Prum. 10 64 / 2018 (1) Brewing Microbiology – Kocuria (Micrococcus) and Cultivation Methods for their Detection – Part 1 DOI: 10.18832/kp201804 Brewing Microbiology – Kocuria (Micrococcus) and Cultivation Methods for their Detection – Part 1 Mikrobiologie pivovarské výroby – bakterie Kocuria (Micrococcus) a kultivační metody pro jejich detekci – 1. část Dagmar MATOULKOVÁ, Petra KUBIZNIAKOVÁ Mikrobiologické oddělení, Výzkumný ústav pivovarský a sladařský, a.s., / Department of Microbiology, Research Institute of Brewing and Malting, PLC, Lípová 15, 120 44 Prague, e-mail: [email protected], [email protected] Recenzovaný článek / Reviewed Paper Matoulková, D., Kubizniaková, P., 2018: Brewing microbiology – Kocuria (Micrococcus) and cultivation methods for their detection – Part 1. Kvasny Prum. 64(1): 10–13 Signifi cant brewery species of micrococcus were reclassifi ed to the genus Kocuria: Kocuria kristinae (previously Micrococcus kristinae) and Kocuria varians (previously Micrococcus varians). Bacteria of genus Kocuria belong to less risky microbial contaminants of beer and brewery plant. Species Kocuria kristinae may exceptionally cause beer spoilage. Signifi cant is their misplacement for pediococci. Here we present an overview of basic morphological and physiological properties of Kocuria (Micrococcus) species and describe their harmfulness in the brewing process. Matoulková, D., Kubizniaková, P., 2018: Mikrobiologie pivovarské výroby – bakterie Kocuria (Micrococcus) a kultivační metody pro jejich detekci – 1. část. Kvasny Prum. 64(1): 10–13 Pivovarsky významné druhy mikrokoků byly reklasifi kovány do rodu Kocuria: Kocuria kristinae (dříve Micrococcus kristinae) a Kocuria varians (dříve Micrococcus varians). Bakterie rodu Kocuria patří k méně rizikovým mikrobiálním kontaminacím piva a pivovarského pro- vozu. Výjimečně může být druh Kocuria kristinae původcem kažení piva. Význam těchto bakterií spočívá zejména v možnosti záměny s pediokoky. -
Bloat in Young Calves
CALF REARING < FOCUS I ECG OF THE MONTH Bloat in young calves Cases of bloat in calves, including a condition found in both dairy and beef herds, have increased in recent years in both the UK and Ireland and around the world. Dr Jessica Cooke BSc PhD, Volac, Hertfordshire, UK, discusses how bloat can affect the abomasum WHAT IS ABOMASAL BLOAT? considerable time. The osmolality of whole milk has been Abomasal bloat is caused primarily by the excess shown to increase from 265-533mOsm/L, with increasing fermentation of high-energy, gastrointestinal contents in total solids from 13.5-20.4%, respectively; but this increase the abomasum (from milk, milk replacer, or high-energy up to 500mOsm/L, did not affect the passage rate, nutrient oral electrolyte solution), along with the presence of digestibility or faecal score (Azevedo et al, 2016). Reference fermentative enzymes (produced by bacteria), resulting in values for osmolality are not well established, but it has the production of an excess quantity of gas, which cannot been recommended that fluids with an osmolality of more be evacuated from the abomasum (Burgstaller et al, than 600mOsm/L should be offered with caution, and 2017). This process is exacerbated by anything that slows they should never be provided when water is not available down the rate of abomasal emptying, since it will give the (McGuirk 2003). The osmolality of some milk replacers bacteria already present in the stomach additional time mixed at 13% (150g powder plus 1L of water) has recently for fermentation of carbohydrates. The exact aetiology been estimated at around 310-330mOsm/L (Wittek et al, is unknown but it involves both bacteria that produce a 2016). -
Breast Milk Microbiota: a Review of the Factors That Influence Composition
Published in "Journal of Infection 81(1): 17–47, 2020" which should be cited to refer to this work. ✩ Breast milk microbiota: A review of the factors that influence composition ∗ Petra Zimmermann a,b,c,d, , Nigel Curtis b,c,d a Department of Paediatrics, Fribourg Hospital HFR and Faculty of Science and Medicine, University of Fribourg, Switzerland b Department of Paediatrics, The University of Melbourne, Parkville, Australia c Infectious Diseases Research Group, Murdoch Children’s Research Institute, Parkville, Australia d Infectious Diseases Unit, The Royal Children’s Hospital Melbourne, Parkville, Australia s u m m a r y Breastfeeding is associated with considerable health benefits for infants. Aside from essential nutrients, immune cells and bioactive components, breast milk also contains a diverse range of microbes, which are important for maintaining mammary and infant health. In this review, we summarise studies that have Keywords: investigated the composition of the breast milk microbiota and factors that might influence it. Microbiome We identified 44 studies investigating 3105 breast milk samples from 2655 women. Several studies Diversity reported that the bacterial diversity is higher in breast milk than infant or maternal faeces. The maxi- Delivery mum number of each bacterial taxonomic level detected per study was 58 phyla, 133 classes, 263 orders, Caesarean 596 families, 590 genera, 1300 species and 3563 operational taxonomic units. Furthermore, fungal, ar- GBS chaeal, eukaryotic and viral DNA was also detected. The most frequently found genera were Staphylococ- Antibiotics cus, Streptococcus Lactobacillus, Pseudomonas, Bifidobacterium, Corynebacterium, Enterococcus, Acinetobacter, BMI Rothia, Cutibacterium, Veillonella and Bacteroides. There was some evidence that gestational age, delivery Probiotics mode, biological sex, parity, intrapartum antibiotics, lactation stage, diet, BMI, composition of breast milk, Smoking Diet HIV infection, geographic location and collection/feeding method influence the composition of the breast milk microbiota. -
Micrococcus Luteus - Survival in Amber C.L
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by DigitalCommons@CalPoly Micrococcus luteus - Survival in Amber C.L. Greenblatt , J. Baum , B.Y. Klein , S. Nachshon , V. Koltunov and R.J. Cano Abstract Introduction A growing body of evidence now supports the isolation of There is an accumulating body of data reporting the microorganisms from ancient materials. However, ques persistence of bacteria in what are considered extreme and tions about the stringency of extraction methods and the oligotrophic environments [15, 24, 37]. However, the genetic relatedness of isolated organisms to their closest mechanisms used by these bacteria to survive in such living relatives continue to challenge the authenticity of conditions are poorly understood. One extreme niche that these ancient life forms. Previous studies have success has consistently yielded such bacteria is amber, from fully isolated a number of spore-forming bacteria from which single isolates and assemblages of multiple bacterial organic and inorganic deposits of considerable age whose species have been characterized [3, 8, 10, 17]. Amber is the survival is explained by their ability to enter suspended fossilized remains of organic tree resins. As volatile terp animation for extended periods of time. However, de enoids in these resins evaporate and dissipate under nat spite a number of putative reports, the isolation of non ural forest conditions they leave the nonvolatile fractions spore-forming bacteria and an explanation for their to become fossilized through progressive oxidation and survival have remained enigmatic. Here we describe the polymerization. During the early stages of solidification isolation of non-spore-forming cocci from a 120-million microorganisms, and occasionally larger organisms such year-old block of amber, which by genetic, morphologi as insects [3], can become entrapped in the resins [31]. -
Effects of Obesity, Energy Restriction and Neutering on the Faecal Microbiota of Cats
Downloaded from British Journal of Nutrition (2017), 118, 513–524 doi:10.1017/S0007114517002379 © The Authors 2017 https://www.cambridge.org/core Effects of obesity, energy restriction and neutering on the faecal microbiota of cats Manuela M. Fischer1*, Alexandre M. Kessler2, Dorothy A. Kieffer3, Trina A. Knotts3, Kyoungmi Kim4, . IP address: Alfreda Wei3, Jon J. Ramsey3 and Andrea J. Fascetti3 1Department of Veterinary Medicine, Centro Universitário Ritter dos Reis – UniRitter, Porto Alegre, RS 91240-261, Brazil 170.106.202.126 2Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazil 3Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA 4Department of Public Health Sciences, School of Medicine, Division of Biostatistics, University of California, Davis, CA 95616, USA (Submitted 16 September 2016 – Final revision received 17 July 2017 – Accepted 9 August 2017 – First published online 29 September 2017) , on 02 Oct 2021 at 04:20:02 Abstract Surveys report that 25–57 % of cats are overweight or obese. The most evinced cause is neutering. Weight loss often fails; thus, new strategies are needed. Obesity has been associated with altered gut bacterial populations and increases in microbial dietary energy extraction, body weight and adiposity. This study aimed to determine whether alterations in intestinal bacteria were associated with obesity, energy restriction , subject to the Cambridge Core terms of use, available at and neutering by characterising faecal microbiota using 16S rRNA gene sequencing in eight lean intact, eight lean neutered and eight obese neutered cats before and after 6 weeks of energy restriction. -
Identification of 129 Micrococcaceae Strains Isolated from Food of Animal Origin C
Identification of 129 Micrococcaceae strains isolated from food of animal origin C. Delarras, C. Guichaoua and M.-P. Caprais Code words: Staphylococcus- nitrofurantoin- aurease- ID 32 STAPH Tab. 1: List of 26 biochemical tests in the ID 32 STAPH-system - numerical identification Reaction/ Test Reaction/ Test substrate substrate 129 strains of Micrococcaceae novobiocin (5 11g/ml), 13 to 44% Urease URE Cellobiose (F) GEL were isolated from food of animal were identified with negative dis Aginin dihydrolase ADH Acetoin (production) VP origin (minced meat, cakes with cordant tests using this mi Ornithin decarboxylase ODC Nitrat (reduction) NIT confectioner's custard) on Baird cromethod. 44% produced no ac Esculin (hydrolysis) ESC B Galactosidase B GAL Glucose (F) GLU Arginin arylamidase ArgA Parker medium. etoin, 35 % had no urease and Fructose (F) FRU Alkaline phosphatase PAL 15 % no arginine dihydrolase. Maltose (F) MAL Pyrrolidonyl Arylamidase PyrA 120 were Staphylococcus and 9 Mannose (F) MNE Novobiocin (Resistance) NOVO Lactose (F) LAC Sucrose (F) SAC Micrococcus, according to the 10 48 Staphylococcus strains (40 %) Trehalose (F) TRE N-Acetyl Glucosamine (F) NAG 32 STAPH-System (1989). The re were identified as human coagula Mannitol (F) MAN Turanose (F) TUR sults were analyzed using a com se negative Staphylococcus spe Raffinose (F) RAF Arabinose (F) ARA Ribose (F) RIB B Glucoronidase B GUR puter program. cies (strains: 39; species: 9) or as animal species (strains: 4; spe (F) ~ Fermentation 60% of these 120 Staphylococcus cies: 1). 5 were Staphylococcus strains of animal origin were co sp S. epidermidis and S. warneri - similar colonies, but without reading of the biochemical tests agulase positive S. -
Final Screening Assessment of Micrococcus Luteus Strain ATCC 4698
Final Screening Assessment of Micrococcus luteus strain ATCC 4698 Environment and Climate Change Canada Health Canada February 2018 Cat. No.: En14-313/2018E-PDF ISBN 978-0-660-24725-0 Information contained in this publication or product may be reproduced, in part or in whole, and by any means, for personal or public non-commercial purposes, without charge or further permission, unless otherwise specified. You are asked to: • Exercise due diligence in ensuring the accuracy of the materials reproduced; • Indicate both the complete title of the materials reproduced, as well as the author organization; and • Indicate that the reproduction is a copy of an official work that is published by the Government of Canada and that the reproduction has not been produced in affiliation with or with the endorsement of the Government of Canada. Commercial reproduction and distribution is prohibited except with written permission from the author. For more information, please contact Environment and Climate Change Canada’s Inquiry Centre at 1-800-668-6767 (in Canada only) or 819-997-2800 or email to [email protected]. © Her Majesty the Queen in Right of Canada, represented by the Minister of the Environment and Climate Change, 2016. Aussi disponible en français ii Synopsis Pursuant to paragraph 74(b) of the Canadian Environmental Protection Act, 1999 (CEPA), the Minister of the Environment and the Minister of Health have conducted a screening assessment of Micrococcus luteus (M. luteus) strain ATCC 4698. M. luteus strain ATCC 4698 is a bacterial strain that shares characteristics with other strains of the species. M. -
Unusually High Prevalence of Asymptomatic Bacteriuria Among Male University Students on Redemption Camp, Ogun State, Nigeria
ORIGINAL ARTICLE AFRICAN JOURNAL OF CLINICAL AND EXPERIMENTAL MICROBIOLOGY JANUARY2013 ISBN 1595-689X VOL 14(1) 2013 AJCEM/21304 -http://www.ajol.info/journals/ajcem COPYRIGHT 2013 http://dx.doi.org/10.4314/ajcem.v14i1.5 AFR. J. CLN. EXPER. MICROBIOL 14(1): 19-22 UNUSUALLY HIGH PREVALENCE OF ASYMPTOMATIC BACTERIURIA AMONG MALE UNIVERSITY STUDENTS ON REDEMPTION CAMP, OGUN STATE, NIGERIA 1,3 Ayoade, F., 1Osho, A. 1Fayemi, S.O., 1Oyejide, N.E. & 1Ibikunle A.A. 1. Department of Biological Sciences, College of Natural Sciences, Redeemer’s University P.O. Box 812, Redemption Camp Post Office, KM 46, Lagos-Ibadan Expressway, Redemption Camp, Ogun State, Nigeria 2. Correspondence: Dr. Femi Ayoade E-mail: [email protected] ABSTRACT Differences are known to occur in prevalence rates in urinary tract infections (UTI) between men and women due to the difference between the urinary tracts of the sexes. Moreover, different organisms are known to infect and cause bacteriuria in men. When urine samples from 55 apparently healthy male students of Redeemer’s University were examined, nine bacteria species including Micrococcus luteus, Viellonella parvula, Micrococcus varians, Streptococcus downei, Streptococcus pneumonia, Bacillus subtilis, Streptococcus pyrogenes, Staphylococcus saprophyticus, and Enterococcus aquimarinus were isolated from the samples. The two most prevalent organisms reported in this study were Micrococcus luteus (40%) and Micrococcus varians (27.3%). The implication of the high prevalence rates (54.5%) of asymptomatic bacteriuria obtained in this population is discussed. Key words: Asymptomatic UTI, bacteriuria, Micrococcus luteus INTRODUCTION Asymptomatic bacteriuria is reportedly rare in young adult males accounting for typically approximately 5- Urinary tract infections (UTIs) are caused by the 6% wherever reported (8).