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      Genome Sequence of Hafnia alvei bta3_1, a Bacterium with Antimicrobial Properties Isolated from Honey Bee Gut

      brief-report
      a , b ,
      Genome Announcements
      American Society for Microbiology

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          Abstract

          Hafnia alvei bta3_1, a strain with antibacterial properties, was isolated from honey bee gut and cultured under aerobic and anaerobic conditions. To explore the potential genetic bases of its antibacterial and possible pathogenic properties, the complete genome of this organism was sequenced and analyzed.

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          Most cited references4

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          ProtTest: selection of best-fit models of protein evolution.

          Using an appropriate model of amino acid replacement is very important for the study of protein evolution and phylogenetic inference. We have built a tool for the selection of the best-fit model of evolution, among a set of candidate models, for a given protein sequence alignment. ProtTest is available under the GNU license from http://darwin.uvigo.es
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            The genus Hafnia: from soup to nuts.

            The genus Hafnia, a member of the family Enterobacteriaceae, consists of gram-negative bacteria that are occasionally implicated in both intestinal and extraintestinal infections in humans. Despite the fact that the genus currently contains only a single species (H. alvei), more extensive phylogenetic depth (two or more species) is apparent based upon DNA relatedness and 16S rRNA gene sequencing studies. Hafnia causes a variety of systemic infections, including septicemia and pneumonia; however, its role as a gastrointestinal pathogen is controversial. Many of the data supporting a role for hafniae as enteric pathogens were incorrectly attributed to this genus rather than to the actual pathogen, Escherichia albertii. There are numerous gaps in our understanding of this genus, including ecologic habitats and population genetics, disease-producing role in animals, phenetic and genetic methods useful in distinguishing genomospecies within the H. alvei complex, and bona fide pathogenicity factors.
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              Influence of environmental conditions on biofilm formation by Hafnia alvei strains.

              Hafnia alvei is considered an opportunistic pathogen of animal and humans, affecting a wide range of homeothermic and poikilothermic hosts with different body temperatures. In this work, H. alvei strains isolated from different sources were studied with regard to their capacity to form biofilms under different environmental conditions. Strain, growth phase, temperature and culture media dependent changes of biofilm formation were semiquantitatively monitored using a microtiter plate method. Our study shows that all strains used could form biofilms in vitro, and that biofilm formation increases dramatically during growth at 25 degrees C but not at 37 degrees C, and decreases at both temperatures in presence of glucose. At 16 degrees C only one strain isolated from a lizard was able to form a dense biofilm showing that the ability to form biofilms in this species is regulated by environmental factors and is also strain specific.
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                Author and article information

                Journal
                Genome Announc
                Genome Announc
                ga
                ga
                GA
                Genome Announcements
                American Society for Microbiology (1752 N St., N.W., Washington, DC )
                2169-8287
                9 June 2016
                May-Jun 2016
                : 4
                : 3
                : e00439-16
                Affiliations
                [a ]College of Life Science, Fujian Normal University, Fuzhou, Fujian, China
                [b ]Department of Integrative Biology, University of Texas, Austin, Texas, USA
                Author notes
                Address correspondence to Nancy A. Moran, nancy.moran@ 123456austin.utexas.edu .
                Article
                genomeA00439-16
                10.1128/genomeA.00439-16
                4901215
                27284146
                4bb7e417-dd74-4577-be60-ccec04478b4a
                Copyright © 2016 Tian and Moran.

                This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

                History
                : 26 April 2016
                : 28 April 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 13, Pages: 2, Words: 1113
                Categories
                Prokaryotes
                Custom metadata
                May/June 2016

                Genetics
                Genetics

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