Clostridium thermopapyrolyticum sp. nov., a Cellulolytic Thermophile

A new thermophilic, cellulolytic species of the genus Clostridium was isolated from riverside mud. The guanine-plus-cytosine content of its DNA is 34 mol%. The isolate ferments a wide range of carbohydrates. Its major fermentation products are ethanol, butanol, acetate, butyrate, lactate, carbon dioxide, and hydrogen. Hydrogen sulfide is also produced. The name Clostridium thermopapyrolyticum is proposed. The type strain has been deposited in the South American Biotechnology and Applied Microbiology microbiological resource center (United Nations Educational, Scientific, and Cultural Organization) culture collection, Tucumán, Argentina, as UBA 305.