Role of respiratory nitrate reductase in ability of Pseudomonas fluorescence YT101 to colonize the rhizosphere of maize

Article Abstract:

Results demonstrate that Pseudomonas fluorescens possessing nitrate reductase activity colonized well the maize rhizosphere. Data further indicate that a 1:1 ratio between wild-type and mutant strains is advantageous for wild-type strains as shown by de Wit replacement stress technique.

United States, Analysis, Physiological aspects, Genetic aspects, Microbial ecology, Pseudomonas fluorescens, Rhizosphere

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Polyclonal antibodies recognizing the AmoB protein of ammonia oxidizers of the beta-subclass of the class Proteobacteria

Article Abstract:

Research is presented on an amino acid sequence that is nearly identical to that of AmoB, an ammonia monooxygenase subunit. The sequence was used to create polyclonal antibodies for detecting Proteobacteria beta-subclass ammonia oxidizers; the resulting antibodies did not react with the ammonia oxidizers, and did not detect the methane oxidizers containing methane monooxygenase.

Germany, Statistical Data Included, Usage, Identification and classification, Composition, Oxidizing agents, Bacterial proteins, Amino acid sequence, Amino acid sequencing, Antibodies

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Abundance of narG, nirS, nirK, and nosZ genes of denitrifying bacteria during primary succession of a glacier foreland

Article Abstract:

Quantitative PCR of denitrification genes encoding the nitrate, nitrite, and nitrous oxide reductases was employed to study denitrifiers across a glacier foreland. Statistical analyses showed that the amount of organic substances was the most important factor in the abundance of eubacteria as well as of nirK and nosZ communities, and copy numbers of these two genes were the most important triggers changing the denitrifying community along the chronosequence.

Science & research, Environmental aspects, Polymerase chain reaction, Bacterial genetics, Quantitative trait loci

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