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The Phylum Dictyoglomi

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Abstract

The phylum Dictyoglomi consists a single genus, Dictyoglomus, with two type strains and several related pure culture isolates. All isolates are thermophilic anaerobic Gram-type negative rods. A major distinguishing phenotypic feature is the formation of spherical bodies in late stationary phase of growth, the function of which is not understood. Most isolates are fermentative using a range of simple carbohydrates, but some isolates are able to grow on crystalline cellulose and chemolithotrophy using carbon monoxide as energy source has been reported for one pure culture. There have been relatively few applications for Dictyoglomus enzymes as a result of a number of factors. Although many of their kinetic properties are exceptional, they have had to be cloned and expressed in standard fermentation strains as hosts, and their low G:C content has required significant genetic manipulation to provide expression. Some of the main applications have required inexpensive enzymes in bulk (e.g., pulp bleaching in paper manufacture), and they have had to be regarded as a replacement for well-established enzymes currently used in the industry. The major applications have involved glycosyl hydrolases, but new uses in value-added products involving drug precursor transformations have been reported recently.

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Authors and Affiliations

  1. Department of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, NSW, 2109, Australia

    P. L. Bergquist

  2. Department of Molecular Medicine & Pathology, University of Auckland Medical School, Private Bag 92019, Auckland, 1142, New Zealand

    P. L. Bergquist

  3. Thermophile Research Unit, University of Waikato, Hamilton, New Zealand

    H. W. Morgan

Authors
  1. P. L. Bergquist
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  2. H. W. Morgan
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Correspondence to P. L. Bergquist .

Editor information

Editors and Affiliations

  1. Department of Molecular Microbiology and Biotechnology, Tel Aviv University, Tel Aviv, Israel

    Eugene Rosenberg

  2. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA

    Edward F. DeLong

  3. Center for Microbial Oceanography: Research and Education, University of Hawaii, Manoa, Honolulu, HI, USA

    Edward F. DeLong

  4. Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA, USA

    Stephen Lory

  5. Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany

    Erko Stackebrandt

  6. Laboratory of Microbiology, Institute of Biology, Center for Health Sciences, Federal University of Rio de Janeiro (UFRJ), Ilha do Fundão, Rio de Janeiro, Brazil

    Fabiano Thompson

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Bergquist, P.L., Morgan, H.W. (2014). The Phylum Dictyoglomi. In: Rosenberg, E., DeLong, E.F., Lory, S., Stackebrandt, E., Thompson, F. (eds) The Prokaryotes. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-38954-2_123

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