1979
DOI: 10.1139/m79-144
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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.

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Cited by 15 publications
(7 citation statements)
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“…Psychrotolerant micro‐organisms have been isolated previously from permanently cold Arctic or Antarctic environments ( Jordan and McNicol 1979; Mountfort et al . 1997) and, because of their ability to tolerate higher temperatures, from seasonally cold environments (Kotsyurbenko et al .…”
Section: Introductionmentioning
confidence: 99%
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“…Psychrotolerant micro‐organisms have been isolated previously from permanently cold Arctic or Antarctic environments ( Jordan and McNicol 1979; Mountfort et al . 1997) and, because of their ability to tolerate higher temperatures, from seasonally cold environments (Kotsyurbenko et al .…”
Section: Introductionmentioning
confidence: 99%
“…Psychrotolerant micro-organisms have been isolated previously from permanently cold Arctic or Antarctic environments ( Jordan and McNicol 1979;Mountfort et al 1997) and, because of their ability to tolerate higher temperatures, from seasonally cold environments (Kotsyurbenko et al 1995). Although psychrophilic micro-organisms are frequently unable to proliferate at temperatures above 22°C, their spores survive exposure to sub-optimal environmental conditions, including elevated temperatures.…”
Section: Introductionmentioning
confidence: 99%
“…As a first step to understand the structural basis of cold adaptation of psychrophilic enzymes, we have carried out biochemical and structural studies of malate dehydrogenase from Aquaspillium arcticum, a psychrophilic bacterium that was isolated from Arctic sediments and grows optimally at 4°C (11). MDH 1 is a homodimeric enzyme that catalyzes the reversible oxidation of malate to oxaloacetate in the presence of NAD in the citric acid cycle and thus plays a major role in central metabolism (12).…”
mentioning
confidence: 99%
“…Strain SPL73 T , with its multilayer thin-section profile of cell wall, its GjC content of 38n4 mol % and its phylogenetic placement in cluster XIVa, can be readily differentiated from non-proteolytic Clostridium botulinum types B, E and F (Cato et al, 1986), Clostridium estertheticum (Collins et al, 1992), Clostridium algidicarnis (Lawson et al, 1994), Clostridium vincentii (Mountfort et al, 1997), Clostridium frigidicarnis (Broda et al, 1999) and Clostridium gasigenes (Broda et al, 2000). This meat strain differs from Clostridium arcticum (which stains Gram-negative and is not yet characterized with respect to GjC content and phylogenetic placement) and from Clostridium fimetarium (which has a GjC content of 35n6 mol % and also lacks phylogeny data) by its ability to hydrolyse starch and ferment lactose, maltose, raffinose, rhamnose and sucrose (Jordan & McNicol, 1979 ;Kotsyurbenko et al, 1995). In ad- Rogers & Baecker (1991).…”
Section: Discussionmentioning
confidence: 99%