Sensitivities of Different Bacteriophage Species to Ionizing Radiations

Abstract

Under appropriate conditions ("direct effect" of Luria and Exner, 1941; Watson, 1950; and others) bacteriophages are known to be inactivated by ionizing radiations according to a simple exponential function of the dose D of radiation received by the phage

A regulatory linkage between scytonemin production and hormogonia differentiation in Nostoc punctiforme

“…All strains were grown as previously described ( Ferreira and Garcia-Pichel, 2016 ) in liquid Allen and Arnon (AA) medium, diluted 4-fold (AA/4), and on solidified AA medium plates under white light at 50 μmol photons m −2 s −1 at room temperature. Neomycin was used at 25 μg mL −1 for the selection and maintenance of transformed single recombinants ( Bertani, 1959 ). A detailed compilation of all strains used in this work is provided in Table 1 .…”

The Widely Conserved ebo Cluster Is Involved in Precursor Transport to the Periplasm during Scytonemin Synthesis in Nostoc punctiforme

“…Neomycin was used at 25 µg ml −1 for the selection and maintenance of transformed single recombinants. Escherichia coli strains and derivatives were grown in liquid or solid lysogeny broth (LB) ( 33 ) supplemented with kanamycin at 25 µg ml −1 and, when required, with chloramphenicol at 30 µg ml −1 .…”