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Planta. 1985 Sep;165(4):502-6. doi: 10.1007/BF00398095.

Diurnal and circadian rhythmicity in the expression of light-induced plant nuclear messenger RNAs.

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Institut für Botanik, Universität Hannover, Herrenhäuser Straße 2, D-3000, Hannover 21, Federal Republic of Germany.


The levels of nuclear mRNAs for three light-inducible proteins (light-harvesting chlorophyll a/b protein, small subunit of ribulose-1,5-bisphosphate carboxylase and early light-induced protein) have been analyzed under light-dark and constant light conditions. The levels of all three mRNAs have been found to vary considerably during the day, both under ligh-dark and under constant light conditions, demonstrating the existence of diurnal and circadian rhythmicity in the expressionoof these nuclear-coded plant proteins. The levels of two of these mRNAs have been found to be enhanced 2 h before the beginning of illumination when active phytochrome levels are still low.


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