title: The Effects of Streptomycin, Desiccation, and UV Radiation on Ice Nucleation by Pseudomonas viridiflava.
abstract: Streptomycin (100 micrograms per milliliter), desiccation (over CaSO(4)), and ultraviolet radiation (4500 microwatts per square centimeter at 254 nanometers for 15 minutes) reduced ice nucleation activity by Pseudomonas viridiflava strain W-1 as determined by freezing drops of the bacterial suspensions. Highest residual ice nucleation activity by dead cells was obtained by desiccation, although no freezing above -3.5 degrees C was detected. The rate and extent of loss of ice nucleation activity following streptomycin and ultraviolet treatment was affected by preconditioning temperature. At 21 degrees C and above, loss of activity by dead cells was rapid and irreversible.
authors: Appalachian Fruit Research Station, Kearneysville, West Virginia 25430.
authors: J A
authors: JA
authors: Anderson
authors: E N
authors: EN
authors: Ashworth