Aerobic Microbial Growth at Low Oxygen Concentrations
نویسندگان
چکیده
منابع مشابه
Aerobic growth at nanomolar oxygen concentrations.
Molecular oxygen (O(2)) is the second most abundant gas in the Earth's atmosphere, but in many natural environments, its concentration is reduced to low or even undetectable levels. Although low-oxygen-adapted organisms define the ecology of low-oxygen environments, their capabilities are not fully known. These capabilities also provide a framework for reconstructing a critical period in the hi...
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Nitrite and nitrous oxide made up 40% of the hypolimnetic dissolved inorganic nitrogen in mesotrophic Lake Rotoiti, New Zealand, prior to hypolimnetic anoxia. Up to 120 mg of N m-3 as nitrite and 20 mg of N m-3 as nitrous oxide accumulated, whereas dissolved-oxygen concentrations remained between 1.0 and 0.2 g m-3 and were totally consumed when the hypolimnion became completely anoxic. Assays o...
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Despite its huge ecological importance, microbial oxygen respiration in pelagic waters is little studied, primarily due to methodological difficulties. Respiration measurements are challenging because of the required high resolution of oxygen concentration measurements. Recent improvements in oxygen sensing techniques bear great potential to overcome these limitations. Here we compare 3 differe...
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Oxygen, although essential to the growth of mammalian cells in vitro and in vivo, has been widely reported to be toxic at concentrations at or above the oxygen concentration in culture medium equilibrated with air (approximately 200 microM). We were therefore surprised to note that a diploid human B-cell line (TK6) was able to proliferate normally while exposed to 380 microM-oxygen. This observ...
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Oxygen minimum zones are major sites of fixed nitrogen loss in the ocean. Recent studies have highlighted the importance of anaerobic ammonium oxidation, anammox, in pelagic nitrogen removal. Sources of ammonium for the anammox reaction, however, remain controversial, as heterotrophic denitrification and alternative anaerobic pathways of organic matter remineralization cannot account for the am...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1967
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.94.1.101-108.1967