title: A new nitrogen-fixing Clostridium species from a high Arctic ecosystem.
abstract: A hitherto undescribed species of yellow-pigmented, Gram-negative Clostridium sp., possessing nitrogenase activity, has been isolated from a number of sampling sites on the Truelove Lowland of Devon Island in the Canadian high Arctic. This bacterium, tentatively designated Clostridium arcticum sp. nov., accounted for 19% of all isolates recovered which were capable of anaerobic nitrogen fixation.
mesh_terms: D000693:Anaerobiosis; D001110:Arctic Regions; D002170:Canada; D003013:Clostridium / Q000145:classification* / Q000378:metabolism; D009586:Nitrogen Fixation; D009591:Nitrogenase / Q000378:metabolism; D012988:Soil Microbiology; D009626:Terminology as Topic
chemical_list: D009591:Nitrogenase