PuSH - Publication Server of Helmholtz Zentrum München: Effect of low and sublethal doses of irradiation on the ribosome content and on the incorporation of [<sup>3</sup>H]uridine into the RNA of growing tubes of pine pollen.

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Zelles, L.

Effect of low and sublethal doses of irradiation on the ribosome content and on the incorporation of [³H]uridine into the RNA of growing tubes of pine pollen.

Radiat. Res. 76, 633-645 (1978)

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Low doses of X rays and uv light delivered at low dose rates stimulated the tube growth of Pinus silvestris pollen, while sublethal doses supplied at moderate dose rates inhibited the tube growth significantly. The irradiation also altered the level of ribosome content. The polysome content measured after 72 hr of tube development was twice as high in samples irradiated with sublethal doses as in samples irradiated with low doses. The control samples possessed only light oligosomes, while in low-dose irradiated samples all polysomes were heavy polysomes, and in sublethally irradiated samples only 20% of polysomes were heavy polysomes. The irradiated pollen, incubated for more than 56 hr, incorporated more uridine than the control: The low dose samples had twice as much labeled uridine in the rRNA as the sublethally irradiated samples.

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PuSH - Publication Server of Helmholtz Zentrum München

Effect of low and sublethal doses of irradiation on the ribosome content and on the incorporation of [3H]uridine into the RNA of growing tubes of pine pollen.

Effect of low and sublethal doses of irradiation on the ribosome content and on the incorporation of [³H]uridine into the RNA of growing tubes of pine pollen.