NITRIFICATION BY CERTAIN HETEROTROPHIC BACTERIA PRESENT IN SOIL
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منابع مشابه
Heterotrophic nitrification in an Acid forest soil and by an Acid-tolerant fungus.
Nitrate was formed from ammonium at pH 3.2 to 6.1 in suspensions of a naturally acid forest soil; the maximum rates of formation occurred at ca. pH 4 to 5. Nitrate was also formed from soil nitrogen in suspensions incubated at 50 degrees C. Autotrophic nitrifying bacteria could not be isolated from this soil. Enrichment cultures produced nitrate in a medium with beta-alanine if much soil was ad...
متن کاملNitrite production by heterotrophic bacteria.
Heterotrophic bacteria were studied which produced nitrite in the presence of ammonia and in the absence of nitrate. A soil extract medium was prepared which allowed good growth as well as nitrite production in the absence of nitrate. Quantitative data are recorded showing that ammonia decreases as nitrite accumulates when four different cultures are grown in the soil medium. Resting cell studi...
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Urethanes have marked physiological activity in plants and animals. Lefevre (1939) found that phenyl urethane affects wheat germination, and subsequently Templeman and Sexton (1946) showed that a variety of urethanes suppress the germination of wheat and oats without affecting charlock. The most active urethanes (for example, isopropylphenylcarbamate;ethylphenylcarbamate) are effective at a con...
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Fifty mesophilic and five moderately thermophilic strains of acidophilic heterotrophic bacteria were tested for the ability to reduce ferric iron in liquid and solid media under aerobic conditions; about 40% of the mesophiles (but none of the moderate thermophiles) displayed at least some capacity to reduce iron. Both rates and extents of ferric iron reduction were highly strain dependent. No a...
متن کاملBiochemistry of nitrification in soil.
Schloessing, J. H. & Muntz, C. A. (1877). C.R. Acad. Sci., Paris, 84, 301; 85, 1018. Schloessing, J. H. & Muntz, C. A. (1878). C.R. Acad. Sci., Paris, 86, 892. Schloessing, J. H. & Muntz, C. A. (1879). C.R. Acad. Sci., Paris, 89, 1075. Snell, F. D. & Snell, C. T. (1936). Colorimetric Methods of Analysis, p. 623. London: Chapman and Hall. Stevens, F. L. & Withers, W. A. (1909). Zbl.'Bakt. II, 23...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1952
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.64.4.596-596.1952