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      Whole-Genome Sequence of Lachnospiraceae Bacterium NBRC 112778, Isolated from a Mesophilic Methanogenic Bioreactor

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      Microbiology Resource Announcements
      American Society for Microbiology

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          Abstract

          Here, we report the draft genome sequence of Lachinospiraceae bacterium NBRC 112778. This anaerobic bacterium, isolated from a sweet potato-digesting mesophilic methanogenic bioreactor, represents a new genus related to the genus Anaerosporobacter. The 4.52-Mb circular genome harbored many genes involved in carbohydrate utilization, suggesting its adaptation to a saccharolytic environment.

          ABSTRACT

          Here, we report the draft genome sequence of Lachinospiraceae bacterium NBRC 112778. This anaerobic bacterium, isolated from a sweet potato-digesting mesophilic methanogenic bioreactor, represents a new genus related to the genus Anaerosporobacter. The 4.52-Mb circular genome harbored many genes involved in carbohydrate utilization, suggesting its adaptation to a saccharolytic environment.

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          Most cited references3

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          Isolation and characterization of a new Clostridium sp. that performs effective cellulosic waste digestion in a thermophilic methanogenic bioreactor.

          A methanogenic bioreactor that utilized wastepaper was developed and operated at 55 degrees C. Microbial community structure analysis showed the presence of a group of clostridia that specifically occurred during the period of high fermentation efficiency. To isolate the effective cellulose digester, the sludge that exhibited high fermentation efficiency was inoculated into a synthetic medium that contained cellulose powder as the sole carbon source and was successively cultivated. A comprehensive 16S rRNA gene sequencing study revealed that the enriched culture contained various clostridia that had diverse phylogenetic positions. The microorganisms were further enriched by successive cultivation with filter paper as the substrate, as well as the bait carrier. A resultant isolate, strain EBR45 (= Clostridium sp. strain NBRC101661), was a new member of the order Clostridiales phylogenetically and physiologically related to Clostridium thermocellum and Clostridium straminisolvens. Specific PCR-based monitoring demonstrated that strain EBR45 specifically occurred during the high fermentation efficiency period in the original methanogenic sludge. Strain EBR45 effectively digested office paper in its pure cultivation system with a synthetic medium.
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            543. Methods for the growth and enumeration of anaerobic spore-formers from cheese, with observations on the effect of nisin

            Severe losses are caused in some types of cheese by the growth of spore-forming anaerobes. The species most commonly involved is Clostridium butyricum and its variants, but other clostridia such as Cl. sporogenes (Bacillus putrificus of Dorner (1)) may also be concerned. Existing methods for the study of the properties of these organisms are inadequate, a fact on which Rosenberger(2) has commented. This work has been particularly concerned with devising a medium suitable for all clostridia, which is clear, simple to prepare, and which requires no special anaerobic precautions in its use.
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              Anaerosporobacter mobilis gen. nov., sp. nov., isolated from forest soil.

              A strictly anaerobic, Gram-positive, endospore-forming bacterium, strain HY-37-4(T), was isolated from a forest-soil sample collected in Jeju, Republic of Korea. The cells were motile rods with peritrichous flagella. Strain HY-37-4(T) fermented various carbohydrates and the end products from glucose were formate, acetate and H(2). The major cellular fatty acids were C(16 : 0), C(16 : 0) 3-OH and iso-C(17 : 1) I/anteiso B. The G+C content of the DNA was 41 mol%. A phylogenetic analysis based on 16S rRNA sequence data indicated that the forest isolate was most closely related to Clostridium herbivorans, Clostridium populeti, Clostridium polysaccharolyticum and Eubacterium xylanophilum, which belong to Clostridium cluster XIVa. However, the low levels of 16S rRNA gene sequence similarity (92.3-93.9 %) with respect to these taxa indicate that strain HY-37-4(T) represents a novel species. Several phenotypic characteristics readily allowed the isolate to be distinguished from other phylogenetically related taxa. On the basis of the polyphasic evidence, strain HY-37-4(T) represents a novel taxon, for which the name Anaerosporobacter mobilis gen. nov., sp. nov. is proposed. The type strain is HY-37-4(T) (=IMSNU 40011(T)=KCTC 5027(T)=DSM 15930(T)).
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                Author and article information

                Contributors
                Role: Editor
                Journal
                Microbiol Resour Announc
                Microbiol Resour Announc
                ga
                mra
                MRA
                Microbiology Resource Announcements
                American Society for Microbiology (1752 N St., N.W., Washington, DC )
                2576-098X
                February 2020
                20 February 2020
                : 9
                : 8
                : e01412-19
                Affiliations
                [a ]Life Science Research Center, College of Bioresource Sciences, Nihon University, Fujiawa, Kanagawa, Japan
                University of Southern California
                Author notes
                Address correspondence to Kenji Ueda, ueda.kenji@ 123456nihon-u.ac.jp .

                Citation Morimura K, Ueda K. 2020. Whole-genome sequence of Lachnospiraceae bacterium NBRC 112778, isolated from a mesophilic methanogenic bioreactor. Microbiol Resour Announc 9:e01412-19. https://doi.org/10.1128/MRA.01412-19.

                Article
                MRA01412-19
                10.1128/MRA.01412-19
                7033268
                32079631
                fbcaf801-0a5b-490e-a51c-13453c3a6d43
                Copyright © 2020 Morimura and Ueda.

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

                History
                : 24 November 2019
                : 28 January 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 6, Pages: 2, Words: 1092
                Categories
                Genome Sequences
                Custom metadata
                February 2020

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