Ozone-induced fatty acid and viability changes in Chlorella

Journal Article · Wed Jan 01 00:00:00 EST 1975 · Plant Physiol.; (United States)

DOI:https://doi.org/10.1104/pp.55.1.15· OSTI ID:7292803

Frederick, P E; Heath, R L

Ozone-treated cells of the photosynthetic green alga Chlorella sorokiniana var. pacificensis exhibit an exponential decline in viability, as measured by their ability to form colonies on agar plates. Postexposure conditions appear to have little, if any, effect on this rate of decline. Except in young (early exponential phate) cells, culture age did not affect this rate. The decline in cell viability was correlated with the production of malondialdehyde, arising from the oxidative breakdown of an ozonide of unsaturated fatty acid material. The loss of fatty acids is substantiated by gas-liquid chromatography. A loss of 5 x 10/sup -15/ moles of fatty acid per cell corresponds to 75 percent nonviable cells after 50 minutes of ozone exposure. (auth)

• Research Organization: Univ. of California, Riverside, CA (United States)
• OSTI ID: 7292803
• Journal Information: Plant Physiol.; (United States), Vol. 55:1
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CHLORELLA
SURVIVAL TIME
OZONE
BIOLOGICAL EFFECTS
AGE DEPENDENCE
CARBOXYLIC ACIDS
MICROORGANISMS
PLANTS
ALGAE
BIOMASS
ENERGY SOURCES
ORGANIC ACIDS
ORGANIC COMPOUNDS
RENEWABLE ENERGY SOURCES
UNICELLULAR ALGAE
560302* - Chemicals Metabolism & Toxicology- Microorganisms- (-1987)