Role of primary photoacceptors in low-power laser effects: action of He-Ne laser radiation on bacteriophage T4-Escherichia coli interaction

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Lasers Surg. Med.; (United States)

DOI:https://doi.org/10.1002/lsm.1900090114· OSTI ID:6095626

Tiphlova, O; Karu, T

The effect of He-Ne laser radiation (lambda = 632.8 nm) on bacteriophage T4-Escherichia coli WP2 interactions was studied. Irradiation of bacteria having respiratory chain components as primary photoacceptors accelerated their division in a dose-dependent manner, but irradiation had no effect on the properties of the phage (measured as its ability to infect host cells). At the same time, exposure of bacteria to stimulating doses of He-Ne laser radiation (from 10(3) to 6 x 10(4) J/m2) increased their ability to promote the growth of unexposed phages. These results clearly indicate that low-power laser effects require primary photoacceptors (phage contains no chromophores for red light).

• Research Organization: Laboratory of Laser Biology and Medicine, Moscow (USSR)
• OSTI ID: 6095626
• Journal Information: Lasers Surg. Med.; (United States), Journal Name: Lasers Surg. Med.; (United States) Vol. 9:1; ISSN LSMED
• Country of Publication: United States
• Language: English

Related Subjects

560400* -- Other Environmental Pollutant Effects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BACTERIOPHAGES
BIOLOGICAL EFFECTS
DOSE-RESPONSE RELATIONSHIPS
ELECTROMAGNETIC RADIATION
ESCHERICHIA COLI
GAS LASERS
GROWTH
HELIUM-NEON LASERS
LASER RADIATION
LASERS
MICROORGANISMS
PARASITES
RADIATIONS
STIMULATION
VIRUSES