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ULTRAVIOLET SENSITIVITY OF VIBRIO PARAH AEMOLYTICUS , A CAUSATIVE BACTERIUM OF FOOD POISONING
Author(s) -
Nozu Keiichi,
Ohnishi Takeo
Publication year - 1977
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1977.tb07518.x
Subject(s) - vibrio parahaemolyticus , strain (injury) , microbiology and biotechnology , bacteria , dna , ultraviolet light , ultraviolet , biology , pathogenic bacteria , chemistry , genetics , materials science , photochemistry , optoelectronics , anatomy
. A pathogenic strain of Vibrio parahaemolyticus , strain WP1, is about 5 times more sensitive to killing by ultraviolet light than is the non‐pathogenic strain WP28, but WP1 cells have an efficient liquid‐holding recovery. The cellular DNA of both strains is fragmented shortly after ultraviolet irradiation, but the fragmented DNA is converted in a short time to the initial large molecular size in WP28 cells. In WP1 cells, however, the DNA molecules were degraded rapidly without any apparent rejoining in a growth condition. Post‐irradiation liquid‐holding made the DNA of WP1 cells stable, as supported by the recovery of DNA synthetic activity in these cells.