Abstract
The effect of hypothermia on the content of 310 kD stress protein in seedlings of winter rye and wheat was studied by rocket-immunoelectrophoresis and radioactive label. The 1-h low-temperature stress was found to result in an increase in the content of this protein at both above- and below-zero temperatures. It was found that the increase in the relative content of the protein with mol. wt 310 kD, under the effect of short-term low-temperature stress, occurs due to induction of its synthesis. It has been found that during cold hardening of winter wheat the content of this protein decreases up to 64% compared to the control during the first day of hardening but starts to rise by the third day and reaches 179% by the seventh day, which is well correlated with the increase in cold resistance of winter wheat plants during cold hardening.
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