Seven thermophilic anaerobic bacteria which ferment xylan were isolated from natural geothermal features in the western United States. Typically, these strains were Gram-negative non-sporeforming rods with an unusual double-layered cell wall which resembled that observed in Thermobacteroides acetoethylicus. The strains differed from known thermophilic anaerobes in their ability to utilize a very wide variety of carbohydrates and in their ability to grow in a chemically-defined medium and/or at pH 3.5. Four of the strains contained cryptic plasmids of 1.2 or 1.5×106 daltons. The taxonomic characteristics of the strains are discussed in terms of their relatedness to those of Thermoanaerobium, Thermoanaerobacter, and Thermobacteroides species. © 1984 Springer-Verlag.
CITATION STYLE
Weimer, P. J., Wagner, L. W., Knowlton, S., & Ng, T. K. (1984). Thermophilic anaerobic bacteria which ferment hemicellulose: characterization of organisms and identification of plasmids. Archives of Microbiology, 138(1), 31–36. https://doi.org/10.1007/BF00425403
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