Does the high nucleic acid content of individual bacterial cells allow us to discriminate between active cells and inactive cells in aquatic systems?

Article Abstract:

Bacterial cells with high nucleic acid content are responsible for most of the total bacterial production. This was the conclusion of researchers who compared leucine incorporation rates in high nucleic acid content cells and low nucleic acid content cells.

Microbial metabolism, Nucleic acids

---

Resistance of marine bacterioneuston to solar radiation

Article Abstract:

A total of 90 bacterial strains were isolated from the sea surface microlayer and underlying waters from two sites of the northwestern Mediterranean Sea. Large interspecific differences among the 90 marine isolates were observed and medium and highly resistant strains accounted for 41% and 22% of the isolates, respectively, and only 16% were sensitive strains.

Science & research, Genetic aspects, Genetic research, Solar radiation

---

Marine bacterial isolates display diverse responses to UV-B radiation

Article Abstract:

Research was conducted to examine the molecular and biological consequences of UV-B radiation by investigating five species of marine bacteria and one enteric bacterium. The relative contributions of dark- and light-dependent repair systems to recovery were calculated by measuring survival and induction and repair of cyclobutane pyrimidine dimers under various light conditions. Results illustrate that there are wide variations in marine bacteria in their responses to UV radiation and subsequent repair strategies indicating that UV-B radiation may influence the microbial community structure in surface water.

Bacterial growth, Ultraviolet radiation

Similar abstracts:

• Abstracts: Nucleoid proteins stimulate stringently controlled bacterial promoters: a link between the cAMP-CRP and the (p)ppGpp regulons in Escherichia coli
• Abstracts: Comparison of quantitative genetic variation and allozyme diversity within and between populations of Scabiosa canescens and S. columbaria
• Abstracts: Diversity, activity, and abundance of sulfate-reducing bacteria in saline and hypersaline soda lakes. Microbial thiocyanate utilization under highly alkaline conditions
• Abstracts: Chemotaxis in the human gastric pathogen Helicobacter pylori: different roles for cheW and the three cheV paralogues, and evidence for cheV2 phosphoryl;ation
• Abstracts: Purification and characterization of cellobiose dehydrogenase from the plant pathogen Sclerotium (Athelia) rolfsii

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