THE EFFECT OF IONIZING RADIATION ON THE ACTIVITY OF PEROXIDASE IN CORN SEEDLINGS GROWN FROM IRRADIATED SEEDS

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Radiobiologiya (U.S.S.R.) For English translation see Radiobiology (Engl. Transl.)

OSTI ID:4687078

Berezina, N M; Yazykova, V A

Corn seeds of the Sterling variety were given a stimulating dose of 500 r, and a lethal dose of 40,000 r in a Co/sup 60/ irradiator. The peroxidase activity was determined separately in the corymb, kernel, and endosperm on the 2, 4, 6, 8, and 13th day of growth. The highest peroxidase activity was observed in the corymb with a somewhat smaller amount in the kernel, and very little peroxidase in the endosperm. A 500 r dose show s a 12 and 17% increase in peroxidase activity on the 2nd and 4th days of growth as compared to the activity of this enzyme in the kernels of the control seedlings. The peroxidase activity then gradually drops to a level which is 70 to 82% of the activity in the kernels of the control seedlings. On irradiating the corn seeds with a lethal dose of 40,000 r, the peroxidase activity showed decreases of 43 and 73% of the activities in the kernels of the controls on the 2nd and 4th days oi growth, respectively. Then, the activity increased sharply to 167% on the 6th day, 211% on the 8th day, and 341% on the 13th day of growth, where the seedling finally died. (TTT)

• Research Organization: Inst. of Biological Physics, Academy of Sciences, Moscow
• NSA Number: NSA-17-030357
• OSTI ID: 4687078
• Journal Information: Radiobiologiya (U.S.S.R.) For English translation see Radiobiology (Engl. Transl.), Journal Name: Radiobiologiya (U.S.S.R.) For English translation see Radiobiology (Engl. Transl.) Vol. Vol: 3; ISSN RADOA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

AGE
BIOCHEMISTRY
BIOLOGY AND MEDICINE
CEREALS
COBALT 60
CORN
ENDOSPERM
ENZYMES
GAMMA RADIATION
LETHAL DOSE
PEROXIDASES
PLANT CELLS
QUANTITATIVE ANALYSIS
RADIATION DOSES
RADIATION EFFECTS
SEEDS
SURVIVAL TIME
TISSUES
VARIATIONS