Nitrosomonas


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Related to Nitrosomonas: Nitrobacter

Nitrosomonas

(nī″trō-sō-mō′năs)
A genus of gram-negative, aerobic bacteria that oxidize ammonia to nitrate.
References in periodicals archive ?
Better growth on gravel bed owned to the better conditions (optimum aeration) for the decomposition of organic matter and nitrification by nitrosomonas and nitrobacter [41].
Hynes RK, Knowles R (1978) Inhibition by acetylene of ammonia oxidation in Nitrosomonas europaea.
In previous studies, both culture-dependent and -independent surveys have suggested the predominance of Nitrosospira over Nitrosomonas in AOB communities in terrestrial ecosystems (Kowatchuk et al.
Rovira and McDougall (1967) reported that activity of nitrifying bacteria (nitrosomonas and nitrobacter) in the rhizospheres of wheat, maize, and lucerne was much higher than that in the bulk soil.
In order to calculate DNA concentrations from Ct values, standard curves were constructed by quantifying the gene copy numbers in a dilution series created from plasmids (pGEMT; Promega Corp., Madison, WI) into which had been ligated either an amoA gene fragment from Nitrosomonas europaea (ATCC 19718) or archaeal amoA PC R product from an environmental sample.
Nitrification inhibitors such as dicyandiamide (DCD), nitropyrin, and 3,4 dimethyl pyrazole phosphate (DMPP) deactivate the enzyme ammonia monooxygenase of Nitrosomonas and/or Nitrosospira, the genera of nitrifying bacteria responsible for the oxidation of ammonium (N[H.sub.4].sup.+]) to nitrate (N[O.sub.3]).
In order to calculate DNA concentrations from Ct values, standard curves were constructed by quantifying the gene copy numbers in a dilution series created from plasmids (pOEM-T, Promega, Alexandria, NSW) into which had been ligated amoA gene of Nitrosomonas europaea (ATCC 19718) or archaea amoA PCR product from an environmental sample.
The AOBs have higher efficiency in the transformation of nitrogen in relation to heterotrophic bacteria, but they take longer to oxidize the ammonia in nitrite and belong to the genera Nitrosomonas, Nitrosococcus, Nitrospira, Nitrosolobus and Nitrosovibrio.
Nitrosomonas, an important N[H.sub.3]-oxidising bacterial genus, is reportedly less sensitive to pH changes than nitriteoxidising bacteria (NOB), and is able to adequately function within a pH range of ~6.5-9.5, with an optimum pH of 8.1 (Grunditz and Dalhammar 2001).
The first step in nitrification is related with the transformation of ammonia into nitrite in the aerobic environment which is catalyzed by nitrosomonas bacteria.
pneonomiae 48hr, pH5.7 Used engine 25-45[degrees]C, Ochrobactrum oil (1-6%) pH 6-8 anthoji HM1 and Citrobacter freundi HM2 Diesel 25-45[degrees]C, Acinetobacter contaminated pH 4-11 baumannii soil (1%-5%) Aromatic 20-45[degrees]C, Klebsiella sp hydrocarbon pH 4-9 Phenanthrene) Crude Oil 20-28.5[degrees]C, Nitrosomonas 5-35 days, and Nitrobacte pH7-8 r species %).
Impacts of silver nanoparticle coating on the nitrification potential of nitrosomonas europaea.