Abstracts

Biological sciences

Search abstracts:

Changes in bacterial species composition in enrichment cultures with various dilutions of inoculum as monitored by denaturing gradient gel electrophoresis

Article Abstract:

A study was conducted to analyze changes in the bacterial populations in serial dilution enrichments from a wetland biofilm sample in Hale County, AL. Leaves were shaken to displace attached cells before the biofilm sample was serially diluted. An aerobic complex medium composed of tryptic soy broth was then utilized for enrichment. Results suggested that varying enrichment procedures with molecular techniques may lead to the identification of more bacteria that can be cultured.

Bacteria, Gel electrophoresis

---

Suboxic deposition of ferric iron by bacteria in opposing gradients of Fe(II) and oxygen at circumneutral pH

Article Abstract:

Lithotrophic Fe(II)-oxidizing bacteria can recycle iron at aerobic-anaerobic interfaces. In cultures inoculated with these bacteria, most Fe(III) deposition occurs below the depth of oxygen penetration, whereas in abiotic cultures, it only occurs in the aerobic zone.

Microbial metabolism, Iron, Iron (Metal)

---

Bacterial reductive dissolution of crystalline Fe(III) oxide in continuous-flow column reactors

Article Abstract:

Bacteria can reduce much more iron when grown in continuous-flow column reactors compared to batch cultures. In continuous-flow column reactors, 95% of Fe(III) oxide was reduced, compared to 13% in batch cultures.

Oxidation-reduction reaction, Oxidation reduction reactions

Similar abstracts:

• Abstracts: Seasonal distributions of dominant 16S rRNA-defined populations in a hot spring microbial mat examined by denaturing gradient gel electrophoresis
• Abstracts: Analysis of beta-subgroup proteobacterial ammonia oxidizer populations in soil by denaturing gradient gel electrophoresis analysis and hierarchical phylogenetic probing
• Abstracts: Sources of Listeria monocytogenes contamination in a cold-smoked rainbow trout processing plant detected by pulsed-field gel electrophoresis typing
• Abstracts: Differential damage in bacterial cells by microwave radiation on the basis of cell wall structure. Enhancement of secretion and extracellular stability of staphylokinase in Bacillus subtilis by wprA gene disruption
• Abstracts: Effects on Bacillus subtilis of conditional expression of the accBC operon encoding subunits of acetyl coenzyme A carboxylase, the first enzyme of fatty acid synthesis

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.