GROWTH RATES OF NITRIFYING CHEMOAUTOTROPHS IN SOIL
نویسندگان
چکیده
منابع مشابه
Growth rates of nitrifying chemoautotrophs in soil.
The accurate measurement of growth-rate constants for bacteria in natural environments is generally found to be quite difficult. Estimation of growth rates for the chemoautotrophs concerned with nitrate production, however, may be made. Advantage is taken of the facts that chemoautotrophs are the major, if not the sole, agents concerned with nitrate production in nature, and that the oxidation ...
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Measurements of the average growth rates of soil bacteria from a soil under three treatments; a conventional high input corn soybean rotation, a reversion to a native successional community (4 years) and a never ploughed grassland, were made by two methods. The specific rates of synthesis of bacterial DNA were determined from the specific activities of the DNA precursor, deoxythymidine triphosp...
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The first rainfall following a severe dry period provides an abrupt water potential change that is both an acute physiological stress and a defined stimulus for the reawakening of soil microbial communities. We followed the responses of indigenous communities of ammonia-oxidizing bacteria, ammonia-oxidizing archaea, and nitrite-oxidizing bacteria to the addition of water to laboratory incubatio...
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Moisture may limit microbial activity in a wide range of environments including salt water, food, wood, biofilms, and soils. Low water availability can inhibit microbial activity by lowering intracellular water potential and thus reducing hydration and activity of enzymes. In solid matrices, low water content may also reduce microbial activity by restricting substrate supply. As pores within so...
متن کاملOptimum growth requirements of nitrifying consortia developed from treated sewage.
The optimum growth requirements of two nitrifying consortia developed from treated sewage by enrichment technique were determined by a series of experiments. There was total inhibition of nitrification at above 2.75 g l(-1) NH4(+)- N and 2.5 g l(-1) NO2(-)-N and the ammonia oxidizing consortium preferred a pH at 8.5 and the nitrite oxidizing consortium a pH of 7.5 as the optima for nitrificatio...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1962
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.83.1.205-206.1962